Phone Number Standards

Complete guide to 869 area code phone numbers in Saint Kitts and Nevis. Learn dialing instructions, validation patterns, mobile number portability, and NANP integration for Caribbean telecommunications.

Validate Afghanistan phone numbers with +93 country code using proven regex patterns, area codes, and mobile operator codes. ITU-T E.164 compliant guide for developers.

Explore ??land Islands phone number formats (+358): landline (18[1-8]X{3,6}), mobile (4[0-8]X{4,8}, 50X{4,8}, 4946X{2,6}), toll-free (800X{4,6}). Includes regex for validation, dialing codes, and ITU-T E.164 normalization.

Complete guide to Albania phone numbers: +355 country code, phone number validation, area codes (Tirana 4, Durrës 52), mobile prefixes, E.164 format, and international dialing. Developer-ready regex patterns included.

Explore Algeria's phone number system: format (+213 XX XXXXXXX), area codes, and validation. Implement robust regex (e.g., mobile: ^\+213(5[4-6]|6[5-7]|7[7-9])\d{7}$) for accurate validation. Includes formatting examples and dialing procedures for developers.

Explore American Samoa's (+1 684) phone number formats, including landline ([2-9]XX XXXX) & mobile (7XX XXXX) patterns. Learn validation via regex (e.g., ^\+1 684...). Understand dialing, NANP, & FCC regulations. Ideal for developers needing number parsing or validation logic.

Complete guide to Andorra phone number validation with +376 country code for developers. Includes ITU-T E.164 format examples, regex validation code, SMS compliance requirements, and APDA regulatory guidelines. Updated 2025.

Complete guide to Angola phone number validation: +244 country code format, area codes, mobile prefixes (Unitel/Africell), E.164 standard & regex patterns for developers.

Master Anguilla phone number validation with area code 264. Get regex patterns, E.164 formatting rules, and NANP compliance code examples for developers.

Complete guide to Antigua and Barbuda phone numbers with area code 268. Includes E.164 validation, NANP format rules, carrier identification, and compliance requirements for developers.

Area code 202 serves Washington, D.C. Learn about the 771 overlay, mandatory 10-digit dialing requirements, coverage areas, and how to get a 202 number for your business.

Master Armenia phone number validation with +374 country code. Complete regex patterns, mobile/landline formats, emergency numbers, MNP rules, and E.164 compliance for developers.

Aruba phone number format deep dive: covers +297 country code, 7-digit local numbers, and dialing conventions. Includes regex for validation (e.g. ^5\d{6}$ landlines, ^800\d{4}$ toll-free). Understand mobile (290X{4}) vs landline (5X{6}) patterns and ITU-T E.164 compliance.

Explore Australia's phone number formats, area codes, and validation rules. Understand landline (02, 03, 07, 08), mobile (04XX XXX XXX), & toll-free (1800) patterns. Includes regex for validation & dialing procedures adhering to ITU-T E.164; crucial for developers.

Explore Austria's phone number format (+43): area codes, structure, and validation. Understand landline/mobile patterns (0664, 0676), regex (e.g. ^06[56789]\d{4,10}$), and dialing. Covers geographic, toll-free (0800), and premium numbers, plus number portability.

Explore Azerbaijan's phone number formats (+994) with this in-depth guide. Understand NSN structure (8-9 digits), area codes (Baku: 12, Ganja: 22), mobile prefixes (50, 51, 55). Includes regex patterns like ^\+994(12|22|36)\d{7}$ for validation.

Explore Bangladesh phone number formats (+880): structure, area codes, & validation. Understand 9-10 digit NSN, mobile (+8801[3-9]\d{8}$), fixed-line patterns (+880[2-9]\d{7,8}$). Includes dialing codes, BTRC regulation, & MNP insights.

Explore Barbados phone number formats (+1 246): NANP structure, area codes, and validation. Understand 7-digit subscriber numbers, dialing codes (011), and regex patterns. Includes toll-free (800), premium (900) examples, plus ITU-T E.164 compliance for telecom professionals.

Explore Belarus phone number formats (+375): structure, area/carrier codes, and validation. Understand landline (+375 17...), mobile (+375 29...), and toll-free formats. Includes regex for validation (e.g., ^\+375\s(29|33|44)\s\d{7}$). Perfect for developers needing E.164 compliance.

Explore Belgium's phone number formats (+32): landline (0XX XXX XXX), mobile (04XX XXX XXX), toll-free (0800 XXX XX). Includes regex for validation, dialing codes, and ITU E.164 compliance. Essential for developers needing accurate Belgian number handling.

Explore Belize phone number formats (+501): structure, dialing codes, & validation. Understand 7-digit numbering, landline (2[02]XXXX), mobile (6[0-35-7]XXXXX) patterns. Includes regex for developers & ITU-T E.164 compliance details.

Explore Benin's (+229) phone number formats, crucial for telecom professionals. Understand 8-digit structure, mobile (9,6,5,4XXXXXXX) & landline (2XXXXXXX) patterns. Includes regex for validation and ITU-T E.164 compliance insights.

Bermuda phone number guide: formats, area code (441), & validation. Covers landline (+1 441 292 XXXX), mobile (+1 441 334 XXXX) & toll-free (+1 800 XXX XXXX). Includes regex.

Bhutan phone number format (+975) explained: area codes, validation & dialing. Understand landline (2[3-6]XXXXXX), mobile (17[1-8]XXXXXX) patterns. Includes regex for validation and ITU-T E.164 compliance details.

Explore Bolivia's phone number formats (+591): landline (8-digit '0X XXX XXXX'), mobile ('6/7X XXX XXX'), & toll-free ('800 XXX XXXX'). Includes regex validation, dialing codes, ITU standards, and number portability. Essential for developers needing telecom data.

Explore Bonaire, Sint Eustatius, and Saba phone number formats (+599): landline (7 digits) & mobile (9 digits). Includes number structure, dialing codes, and validation regex (^+599[1-9]\d{6}$ for landlines). TRA regulations and ITU-T E.164 compliance covered.

Explore Bosnia and Herzegovina phone number formats (+387): structure, area codes, and validation. Includes landline (0XX XXXXXX), mobile (06X XXXXXX) examples. Regex patterns provided for validation. Understand dialing rules, number portability, and RAK regulations. Ideal for developers needing E.164 compliance.

Explore Bosnia & Herzegovina phone number formats (+387): area codes, landline/mobile structure, and validation. Includes regex patterns like ^6[0-9]{7}$ for mobile. Covers dialing codes, number portability since 2015, and CRA regulation. Ideal for developers needing 6-7 digit subscriber number details.

Explore Botswana phone number formats (+267): landline (2X XXXX), mobile (7[1-8]XXXXXX), toll-free (0800XXXX). Includes ITU-T E.164 standards, regex validation `/^7[1-8][0-9]{6}$/`, dialing codes, BOCRA oversight, and number portability for telecom professionals.

Explore Brazil's phone number formats (+55), area codes, and validation. Understand landline `(NN) NNNN-NNNN` vs. mobile `(NN) 9NNNN-NNNN` patterns. Includes regex for validation and dialing: e.g., `^\(?(1[1-9]...\)? ?9\d{4}-?\d{4}$` for mobile. Essential for developers needing E.164 compliance.

Comprehensive guide to BIOT phone numbers with +246 country code. Learn Diego Garcia number formats, validation patterns, E.164 implementation, and telecommunications regulations for developers and system integrators.

Master BVI phone number handling with this comprehensive guide to area code 284 format, NANP standards, validation regex, fraud protection, and developer integration. Learn about Digicel, Flow, and CCT carriers.

Explore Brunei (+673) phone number formats: landline (7 digits, 2/3 prefix), mobile (7-8 digits, 7/8 prefix). Includes regex for validation (/^[23]\d{6}$/). Covers dialing & ITU-T E.164.

Explore Bulgaria's phone number formats (+359): area codes, structure, and validation. Includes landline (0[2-9]X{5,7}), mobile (08[7-9]X{7}) regex. Examples: Sofia (02), Plovdiv (032). Covers dialing, portability since 2007, and CRC regulation. Ideal for developers needing accurate telecom data.

Explore Burkina Faso's phone number format (+226): an in-depth guide for developers. Understand 8-digit number structure ([2-7]XXXXXXX), landline (2XXXXXXX), mobile ([5-7]XXXXXXX). Includes regex for validation and dialing procedures. Follows ITU-T E.164; no number portability.

Explore Burundi's phone number formats (+257): structure, dialing codes, & validation. Understand landline (22XXXXXXX) & mobile (79/71XXXXXXX) patterns. Includes regex for validation, E.164 compliance, & telecom operator details. Ideal for developers needing number parsing logic.

Explore C??te d'Ivoire's (+225) phone number system: formats, dialing codes, & validation. Understand 10-digit structure (XZABPQMCDU), mobile (01, 05, 07) vs. fixed-line (21, 25, 27). Includes regex: `^0[157]\d{8}$` & ARCEP regulatory details.

Explore Cabo Verde's (+238) phone number system: formats, dialing codes, and validation. Understand landline (2[1-7]XXXXXX), mobile (9[1-9]XXXXX) & toll-free (800XXXX) structures. Includes regex for validation & ITU compliance details.

Explore Cameroon's phone number formats (+237): structure, dialing codes, & validation. Understand landline (2X XX XX XX), mobile (6X XX XX XX) patterns. Includes regex: `^2\d{7}$`, `^6\d{7}$` for validation. Learn about MNP and ITU-T E.164 compliance.

Explore Canada's phone number formats, area codes, and validation. Understand the +1 country code, 10-digit structure (NXX-NXX-XXXX), and dialing procedures. Includes regex for validation like ^\+1[2-9]\d{2}[2-9]\d{2}\d{4}$ and upcoming 559/357 overlays.

CAR phone number guide: formats, area codes, & validation. Understand +236 numbering: landline (21XXXXXX), mobile (7[024-7]XXXXXX), & premium (8776XXXX). Includes regex for validation.

Explore Chilean phone number formats (+56): structure, validation & dialing. Understand landline (2XXXXXXXX), mobile (9XXXXXXXX) & toll-free (800XXXXXX) patterns. Includes regex for validation & SUBTEL regulatory details.

Understand China's phone number formats (+86): landline (10-12 digits w/ 2-4 digit area codes like '10'), mobile (11 digits). Includes validation regex, dialing codes, & operator prefixes. Ideal for telecom engineers needing numbering plan details.

Explore Christmas Island phone number formats (+61): landline (8[1-9]XXXXXXX), mobile (4[0-9]XXXXXXX). Includes validation regex, dialing codes (0011), and ITU E.164 compliance. Essential for developers needing telecom specifics; e.g., validating '891234567' or '+61' handling.

Comprehensive guide to Cocos (Keeling) Islands phone numbers (+61): formats, area codes, & validation. Includes number structure (9 digits), regex (e.g. ^\+614\d{8}$), and dialing for landline/mobile. Conforms to ITU-T E.164; managed by ACMA.

Complete guide to calling Comoros with country code +269. Learn phone number formats, validation regex patterns, international dialing procedures, and developer implementation tips.

Understand Cook Islands phone number formats (+682) with this technical guide. Learn the 5-7 digit subscriber number structure, landline (2XXXX) & mobile patterns ([578]XXXX). Includes regex for validation: `/^[2-578]\d{4}$/`. No area codes used; adheres to ITU-T E.164.

Understand Costa Rica's +506 phone number format: an 8-digit closed system. Includes landline (2XXX-XXXX), mobile (8XXX-XXXX) examples, and VoIP (21XX-XXXX). Validate numbers using regex: `^2\d{7}$`, `^8\d{7}$`. Learn dialing procedures and number portability.

Complete guide to Croatian phone number formats, validation patterns, area codes, and dialing procedures for developers implementing phone number validation.

Explore Cuba's phone number system: formats, dialing codes, & validation. Understand landline (7/8-digit, `[2-7]XXXXXXX`), mobile (`5XXXXXXX`) formats. Includes regex for validation & ITU-T E.164 compliance. Learn about +53 country code, prefixes, & telecom regulations.

Explore Cura??ao's (+599) phone number formats: a technical guide for developers/telecom experts. Understand 7-digit number structure (NXX XXXX), dialing, and ITU-T E.164. Includes regex for validation (e.g. ^\+599 9[0-9]{2} [0-9]{4}$), operator ranges, and dialing procedures. No number portability.

Explore Cyprus phone number formats (+357): structure, dialing codes, and validation. Understand 8-digit number allocation, including geographic (2[2-6]XXXXXX) & mobile (9[6-7]XXXXXX). Includes regex for validation and ITU-T standards compliance.

Explore Czechia's (+420) phone number system: formats, area codes, & validation. Understand 9-digit structure, landline (2XX XXX XXX), mobile (60X/7XX XXX XXX) patterns. Includes regex for validation.

DRC phone number format guide: structure, area codes, validation. Covers landline (0X XXX XXXX), mobile (0XX XXX XXXX) formats. Includes regex (e.g. ^0[89]\d{8}$), dialing codes (+243), ITU-T E.164 adherence, and operator prefixes for parsing/validation.

Explore Denmark's phone number system (+45): 8-digit format, number categories (geographic, mobile, toll-free 80), and international dialing. Includes validation regex: `^[2-9]\d{7}$`. Learn number portability rules and emergency numbers like 112, 114. Essential for developers.

Understand Djibouti's (+253) phone number system: 8-digit formats for fixed (21X{6}) and mobile (77X{6}) lines. Includes number portability, dialing codes, and validation regex like ^\+25377\d{6}$. Conforms to ITU-T E.164.

Explore Dominica's (+1 767) phone number format: fixed-line (767-2XX-XXXX), mobile (767-[2-9]XX-XXXX). Includes validation regex (e.g., ^7672[0-9]{6}$), dialing codes, and operator ranges. Learn about number portability and the DTA regulatory body. Perfect for developers needing precise telecom data.

Explore the Dominican Republic's (+1) phone number format: a technical guide covering area codes (809, 829, 849), landline/mobile patterns, and validation. Includes regex for formats like +1 800-XXX-XXXX (toll-free) and dialing procedures, crucial for developers needing E.164 compliance.

Ecuador phone numbers use country code +593 with area codes 2-8 for landlines and 92-99 for mobile. Complete 2025 guide to Ecuador number format, validation regex, and E.164 implementation for developers.

Comprehensive guide to Egypt's phone number system including international dialing codes, landline area codes, mobile operator prefixes, E.164 validation patterns, number portability, and regulatory developments.

Learn how to validate, format, and process Eritrean phone numbers (+291) in your applications. This comprehensive guide covers Eritrea's phone number format, E.164 validation, mobile vs. landline detection, and code examples for developers.

Complete guide to Estonia phone numbers (+372): format examples, mobile vs landline validation, E.164 standard implementation, and developer best practices for Estonian numbering.

Learn how to format, validate, and implement Ethiopian phone numbers (+251) in your applications. Comprehensive guide covering mobile and fixed-line formats, area codes, operator prefixes, and validation code.

Complete guide to Falkland Islands phone numbers (+500 country code). Learn the 5-digit format, validation code, dialing procedures, and network infrastructure for developers.

Learn how to validate and format Faroe Islands phone numbers (+298) in your applications. This comprehensive guide covers the 6-digit number format, JavaScript validation examples, emergency service integration, and regulatory compliance for developers building telecommunications systems.

Explore Fiji phone number formats (+679): a technical guide covering validation and structure. Understand 7-digit number ranges ([3-6] for fixed, [7-9] mobile), plus JavaScript validation. Essential for developers integrating Fiji telecom services.

Comprehensive guide for developers on formatting, validating, and handling Finnish phone numbers (+358), including area codes, mobile prefixes, carrier selection, and number portability.

Learn how French phone numbers work: 10-digit format structure, country code +33, area codes (01-05), mobile prefixes (06-07), and international dialing. This guide covers validation, number portability, ARCEP regulations, and technical implementation for developers.

Comprehensive guide to French Guiana's phone numbering system, covering formats, validation, portability, and ARCEP compliance for developers.

Complete guide to French Polynesia phone numbers with +689 country code. Learn 8-digit format, mobile prefixes, validation patterns, and international calling for Tahiti telecommunications.

Comprehensive guide for validating and formatting Gabon phone numbers (country code +241) including regex validation, E.164 formatting, and SMS integration.

This comprehensive guide covers Gambia's telephone numbering system for developers, CPaaS integrators, and telecom professionals implementing phone number validation. Learn how to format, validate, and handle Gambian phone numbers with country code +220, including carrier routing, E.164 compliance, and emergency service requirements.

Comprehensive guide to Georgia's phone numbering system for developers and telecom professionals

Explore Germany's phone number format (+49): area codes (2-5 digits), subscriber numbers (3-13 digits), and validation. Understand geographic (0XX[X]), mobile (01XX), and service numbers. Includes regex for validation and handling mobile number portability (MNP).

Explore Ghana's phone number system: formats, area codes (+233), & validation. Understand landline (0322001234), mobile (0241234567) patterns. Includes regex & JavaScript validation examples.

Comprehensive guide to Gibraltar phone numbers covering +350 country code, 8-digit format, regex validation patterns, number portability, emergency services, and regulatory requirements.

Greece phone number portability system integration guide for developers. Learn the architecture, API requirements, and best practices for implementing number porting in Greek telecommunications.

Learn everything about Greenland's phone number system, including the +299 country code, 6-digit numbering format, dialing procedures, and validation techniques.

Understand Grenada phone number formats (+1 473) for reliable telecom integration. Learn landline (473-2XX-XXXX), mobile (473-4XX/5XX-XXXX) patterns and validation. Includes regex: `^473[45][0-9]{6}$`, portability, E.164 formatting, and security best practices.

Complete guide for developers on Guadeloupe phone number formatting, validation, portability, and telecom API integration with country code +590.

Comprehensive developer guide for Guam phone numbers including validation, area code 671, NANP integration, and number portability

Explore Guatemala's phone number system: formats, area codes (+502), and validation. Understand landline (2XXXXXXX, 6XXXXXXX, 7XXXXXXX) & mobile (3-5XXXXXXX) patterns. Includes regex validation examples and regulatory insights.

Learn how to format, validate, and integrate Guernsey phone numbers into your application. This comprehensive guide covers the +44 1481 area code, number formatting standards, validation techniques, special service numbers, and developer implementation best practices for Guernsey telecommunications.

Complete guide to Guinea phone number formats, validation, and E.164 standard implementation for developers and telecommunications professionals.

Explore Guinea-Bissau phone number formats (+245): an 8-digit system without area codes. Includes mobile (95/96/97XXXXXX), landline (44XXXXXX) patterns, and int'l dialing. Plus regex for validation and network coverage details for developers.

Comprehensive guide to Guyana's phone numbering system with validation examples, E.164 formatting, dialing procedures, and regulatory compliance.

Complete technical guide to Haiti's telephone numbering system, including the +509 country code, number formats, validation rules, and dialing procedures.

Honduras phone number guide: formats, area codes (+504), & validation. Understand 8-digit NSN structure since 2004. Includes regex for landline (2XXX XXXX), mobile ([3,7-9]XXX XXXX), & toll-free (8002 XXXX) validation. E.164 storage & number portability details provided.

Learn Hong Kong phone number formats, validation techniques, and E.164 international standards. Complete guide covering the 8-digit numbering system with country code +852.

Complete guide to Chad phone numbers: country code +235, international dialing, mobile/landline formats, emergency numbers 112/117/118, carrier codes, and validation regex for developers.

Learn how to call South Africa with country code +27. Complete guide to South African phone number formats, area codes, E.164 validation, number portability, and ICASA regulations for developers.

Comprehensive guide covering Hungarian phone number formats, validation patterns, and area codes for developers building telephony applications.

Complete Iceland phone number format guide: +354 country code, 7-digit validation, carrier prefixes, and E.164 integration. Learn how to call Iceland and validate Icelandic numbers with regex examples.

Comprehensive guide to India phone number formats, E.164 validation, STD area codes, mobile vs. landline formatting, emergency services, and TRAI regulatory requirements.

Comprehensive guide covering Indonesian phone number formats, area codes, validation techniques, and best practices for developers working with Indonesian telecommunications.

Complete guide to Iran phone numbers (+98). Learn Iranian telephone formats, area codes, mobile prefixes, validation regex, and international dialing rules.

Master Iraqi phone number validation with our complete +964 format guide. Get area codes for Baghdad, Basra, Mosul, regex patterns, and mobile operator prefixes.

Complete guide to Irish phone numbers (+353) covering formats, validation, GDPR compliance, and implementation with code examples

Complete guide for developers on Isle of Man phone number validation, formatting, carrier services, and technical implementation best practices.

Master Israeli phone number formats, validation, and area codes. Complete developer guide with code examples for handling Israel's +972 country code, mobile prefixes (050-059), landline area codes, and E.164 formatting.

Learn how to validate Jamaica phone numbers with +1-876 and +1-658 area codes. Complete E.164 formatting guide, NANP validation rules, and code examples for developers.

Master Japan phone number formats, validation, and area codes. Complete guide to +81 country code, mobile prefixes (070/080/090), E.164 formatting, and MIC regulations for developers.

Master Jersey phone numbers with our complete developer guide: +44 1534 area code format, validation regex, international dialing procedures, and number portability implementation for telecom applications.

Complete guide to Jordan phone number formats (+962), validation regex, mobile prefixes (077, 078, 079), area codes, and E.164 implementation. Includes TRC regulations and code examples.

Complete guide to Kazakhstan phone numbers: +7 country code format, validation regex patterns, area codes 710-733, mobile prefixes 70x/77x, and E.164 integration for developers.

Complete guide to Kentucky phone numbers: area code coverage maps (502, 606, 859, 270, 364), validation code examples, time zone handling, and 10-digit dialing requirements. Essential for developers building telecom apps.

Master Kenya phone numbers with +254 country code. Covers validation regex, E.164 format, Safaricom/Airtel/Telkom prefixes, area codes, MNP implementation, and emergency numbers for developers.

Complete guide to Kiribati phone numbers (+686 country code): 8-digit format, validation regex, how to call Kiribati, emergency numbers, CCK regulations, and technical implementation for Vodafone Kiribati and Ocean Link operators.

Complete guide to Kosovo phone numbers: +383 country code, E.164 format, area codes (038, 039, 028), mobile operators (Vala, IPKO), validation regex, and number portability for developers.

Complete guide to validating Kuwait phone numbers (+965) with E.164 format regex patterns, CITRA numbering plan specifications, carrier identification (Zain, Ooredoo, STC), and JavaScript validation examples for SMS/OTP systems.

Master Kyrgyzstan phone numbers with our +996 country code guide. Get E.164 formatting, operator codes (Beeline, MegaCom, O!), validation patterns, and SIM registration rules for developers.

Complete guide to Laos phone numbers (country code +856): format structure, validation regex, carrier information, and integration best practices for developers.

Complete guide to Latvia phone numbers including +371 country code, 8-digit format, validation code, number portability, and mobile operators (LMT, Tele2, Bite). Implement Latvian number formatting with our developer guide.

Comprehensive guide to Lebanon phone number formats (+961): structure, validation, and implementation. Includes landline/mobile prefixes (03, 70, 71, 01, 04-07, 09), regex for national/international formats, and number portability best practices. NSN length: 8 digits.

Complete guide to Libya phone number formats, area codes, and validation. Learn how to call Libya with +218 country code, validate mobile prefixes (091-095), dial emergency numbers (1515-1518), and comply with telecom regulations for 2025.

Complete guide to Lithuanian phone number validation with code examples. Learn the 8→0 prefix transition, area codes, E.164 format, and RRT compliance requirements for developers.

Master Luxembourg phone number formats with +352 country code. Complete validation guide covering mobile (6/7), landline, toll-free (800) numbers with regex patterns, API integration, and E.164 formatting.

Complete guide to Madagascar phone numbers. Learn E.164 formatting, validate mobile numbers, implement MNP support, and ensure ARTEC regulatory compliance.

Integrate Malawi phone numbers with this comprehensive developer guide. Learn E.164 formatting, TNM/Airtel operator prefixes, MNP handling, validation regex, and MACRA compliance requirements.

Master Malaysian phone number validation with code examples in JavaScript, Python, PHP & Java. Includes MCMC regulations, E.164 conversion, WhatsApp formatting, IRBM e-invoice compliance, and mobile carrier prefixes for Maxis, Celcom, DiGi & U Mobile.

Validate Maldives phone numbers with +960 country code. Complete guide to number formats, operator prefixes (Dhiraagu, Ooredoo), E.164 validation, and MNP implementation for developers.

Complete guide to calling Mali: +223 country code format, 8-digit phone numbers, Orange Mali & Malitel operator prefixes, E.164 validation, and international dialing procedures for developers.

Complete Malta phone number format guide: +356 country code, 8-digit validation patterns, mobile vs landline prefixes (79, 99, 2x), and E.164 compliance with code examples.

Complete guide to Martinique phone number format, validation, and integration. Learn +596 country code dialing, landline vs mobile formats, ARCEP regulations, and developer implementation for calling Martinique.

Learn how to format and validate Mauritius phone numbers with country code +230. Complete guide covering mobile/landline formats, E.164 standard, regex validation, and ICTA regulations.

Learn Mayotte phone number formatting with +262 country code, E.164 validation, regex patterns, and ARCEP compliance. Complete guide for YT telecommunications with code examples.

Master Mexico phone number format and validation with our developer guide. Learn +52 country code rules, area codes, 2019-2020 reforms, E.164 formatting, and SMS compliance for accurate implementation.

Learn how to validate and format Federated States of Micronesia (FSM) phone numbers using country code +691. This comprehensive guide covers FSM telephone numbering formats, validation regex patterns, and compliance requirements for developers building telecommunications applications.

Complete guide to Minnesota phone numbers: 8 area codes (218, 320, 507, 612, 651, 763, 924, 952), E.164 validation, number porting, and 924 overlay. Includes code examples and regulatory compliance.

Complete guide to Moldova phone numbers: +373 country code, E.164 format, validation regex, NDC codes, ANRCETI regulations, and number portability. Essential for developers.

Complete guide to calling Monaco with +377 country code. Learn phone number formats, validation regex patterns, how to dial Monaco, and Monaco Telecom infrastructure details.

How to call Montenegro: Complete +382 country code guide with phone number formats, validation regex, emergency numbers (112), area codes, mobile operators (Crnogorski Telekom, M:tel, One), and number portability.

Learn how to call Montserrat using country code +1-664. Complete guide to Montserrat phone number format, area code 664 validation, NANP dialing, Mobile Number Portability (MNP), emergency numbers, and libphonenumber-js implementation for developers.

Learn Morocco's +212 country code, phone number format (10-digit with 0, 9-digit international), validation patterns, mobile prefixes (06/07), area codes, and ANRT regulations for developers.

Comprehensive guide to Mozambique phone number formats, validation, and area codes. Learn E.164 formatting, operator prefixes, biometric SIM registration rules, and implementation best practices.

Complete guide to Myanmar phone number format with +95 country code. Learn how to validate, format, and call Myanmar numbers including mobile, landline, and toll-free numbers.

Complete guide to Namibia phone numbers with +264 country code. Learn number formats, area codes, mobile prefixes, dialing rules, and validation patterns for Namibian telecommunications.

Complete guide to Nauru phone number validation, formatting, and +674 country code. Learn to validate 7-digit mobile numbers (Digicel 556-558, Neotel 222/777/888/999), implement E.164 format, and integrate with Nauru's dual-operator telecommunications network.

Learn Dutch phone number formats, validation regex, and ACM compliance. Complete guide to 06 mobile numbers, area codes, number portability, and integration with KPN, Odido, VodafoneZiggo APIs.

Complete guide to Niger phone numbers. Learn E.164 formatting, validate numbers with regex, implement ARCEP compliance, and handle Airtel/Moov mobile formats.

Master Nigeria phone number formats, validation, and MNP. Learn country code +234, mobile prefixes, 02 fixed-line format, NCC regulations, and operator allocations.

Complete guide to Niue phone numbers with country code +683. Learn the 4-digit format, how to call Niue from USA, validation regex, emergency number 999, mobile prefixes, and E.164 formatting for developers.

Complete guide to Norfolk Island phone numbers with +672 country code. Learn number formats, validation regex, how to call Norfolk Island, and developer integration best practices for landline and mobile numbers.

Complete NC phone number guide: 10 area codes (252, 336, 472, 704, 743, 828, 910, 919, 980, 984), Charlotte & Raleigh area code lookup, validation, porting rules, and NCUC regulations. Expert guide for developers.

Learn how to call North Korea with country code +850. Complete guide to DPRK phone number formats, international dialing, mobile networks (Koryolink), area codes, validation, and sanctions compliance for developers.

Learn how to format, validate, and parse North Macedonia phone numbers (+389). Complete guide with regex patterns, area codes, mobile operator prefixes, and AEK compliance requirements.

Complete guide to Norway phone numbers including +47 country code, E.164 format, number validation, emergency services (110, 112, 113), and Nkom regulations. Essential for developers working with Norwegian telecommunications.

Master Oman phone validation with +968 country code. Complete 8-digit format guide with regex patterns, area codes, and operator prefixes.

Learn how to format Pakistan phone numbers with +92 country code, validate mobile numbers, implement MNP (Mobile Number Portability), and comply with PTA regulations. Includes E.164 format examples and code.

Learn how to call Palau using country code +680. Complete guide to phone number formats, E.164 validation, dialing instructions, and mobile number prefixes for developers.

Complete guide to Palestinian phone numbers with +970 country code. Learn mobile number format (Jawwal 059, Wataniya 056), E.164 validation, area codes, API integration, and network considerations for West Bank and Gaza telecommunications.

Complete Pennsylvania area codes list (215, 267, 412, 610, 717, 814) and US phone number validation guide for developers. Learn NANP format, 10-digit dialing, E911 compliance, and implement regex validation with JavaScript & Python examples.

Master Peru phone number formats with +51 country code. Complete guide to landline/mobile validation, area codes, E.164 format, OSIPTEL regulations, and implementation code for developers.

Complete guide to Philippines phone number format with country code +63. Learn mobile and landline validation, area codes, Globe/Smart/DITO prefixes, and Mobile Number Portability (MNP) implementation.

Complete guide to Qatar phone number validation, E.164 format, CRA regulations, mobile prefixes, and number portability. Includes code examples for Ooredoo and Vodafone numbers.

Explore the Republic of the Congo's (+242) phone number formats, including landline (222[1-5][0-9]{5}) and mobile (06[1-5][0-9]{6} or 07[0-9]{7}) structures. Understand dialing procedures and validation via regex ^(222[1-5][0-9]{5}|06[1-5][0-9]{6}|07[0-9]{7}|80[0-2][0-9]{6})$.

Complete guide to Romanian phone numbers: +40 country code validation, E.164 formatting, mobile operator prefixes (Orange, Vodafone, Digi), ANCOM regulations, and number portability for 2024-2025.

Complete guide to Russian phone numbers: +7 country code, format validation, mobile prefixes (9XX), major area codes (Moscow 495/499, St. Petersburg 812), and E.164 compliance for developers.

Complete guide to Rwanda's phone number system including E.164 formatting, operator identification (MTN, Airtel), biometric SIM registration, emergency services, and developer implementation with validation code examples.

Validate Réunion phone numbers with E.164 format. Complete guide to +262 country code, ARCEP regulations, mobile operators, and emergency services.

Saint Barth??lemy phone numbers explained: format, area codes (+590), & validation. Includes landline (590 27XXXXXX), mobile (690XXXXXX) formats, plus regex for validation (^590\d{7}$). Learn dialing procedures & number portability.

Complete guide to Saint Lucia phone numbers with area code 758. Learn E.164 format validation, NANP structure, FLOW & Digicel SMS integration, mobile number portability (MNP), and carrier routing for developers.

Complete guide to Saint Pierre and Miquelon phone numbers with +508 country code. Validate 6-digit SPM numbers, integrate with SPM Telecom/Globaltel, and comply with ARCEP regulations.

Complete guide to Saint Vincent and the Grenadines phone numbers: area code 784, validation regex, NANP format +1-784-XXX-XXXX, mobile vs landline prefixes, and NTRC compliance for developers.

Complete guide to calling San Marino with +378 country code. Learn phone number formats, validation rules, area codes (0549), and implementation tips for developers and businesses.

Complete guide to Saudi Arabia phone numbers with country code +966. Learn number formats, area codes, mobile prefixes, validation rules, and how to dial Saudi numbers internationally.

Complete guide to Senegal phone numbers with +221 country code: 9-digit format validation, mobile operators (Orange, Yas, Expresso), regex examples, number portability, and ARTP regulations for developers.

Complete guide to Serbian phone numbers including +381 country code, area codes, mobile formats (06X), number portability (MNP/FNP), and RATEL regulations for developers and telecom professionals.

Complete guide to Seychelles phone numbers with +248 country code. Learn validation, E.164 formatting, emergency numbers, and how to call Seychelles internationally. Developer-focused examples included.

Complete guide to Sint Maarten phone numbers with area code 721, E.164 format validation, NANP dialing rules, emergency numbers (911, 912, 919, 913), and developer implementation best practices.

Master Slovenia phone number validation with our complete +386 country code guide. Learn mobile prefixes (064-069), area codes (01-07), E.164 formatting, and how to integrate Telekom Slovenije, A1, Telemach, and T-2 numbers into your applications.

Complete guide to Somalia phone number formats, E.164 validation, carrier prefixes, and implementation. Includes regex patterns, storage best practices, and NCA compliance for +252 numbers.

Complete guide to South Korea phone number formats with +82 country code. Learn 010 mobile validation, area codes, E.164 formatting, and regex patterns for Korean telecommunications integration.

Complete guide to South Sudan phone number formats (+211), validation regex, and E.164 compliance. Learn mobile operator prefixes (MTN, Zain), landline formats, and implementation best practices for developers.

Master Spanish phone number formats with our comprehensive developer guide. Learn +34 country code structure, mobile/landline validation, E.164 formatting, and regulatory compliance for building telecom apps.

Learn how to validate Sri Lanka phone numbers (+94 country code) using E.164 format standards. Covers TRC regulations, mobile operator prefixes (Dialog, Mobitel, Hutch, Airtel), JavaScript validation code, and emergency numbers.

Complete guide to calling Suriname with +597 country code. Learn international dialing format, validate 6-digit landlines and 7-digit mobile numbers, implement regex patterns, and integrate with Telesur/Digicel carriers for reliable telecommunications.

Complete guide to Svalbard phone number validation using Norway's +47 country code and 79 prefix. Learn validation patterns, formatting techniques, emergency numbers, and implementation examples.

Explore Switzerland's phone number formats (+41 country code) and validation rules. Understand the 9-digit closed numbering plan, including area codes (2-4 digits). Includes regex for geographic (021), mobile (079), toll-free (0800), and premium numbers. Compliant with ITU-T E.164.

Complete guide to Syrian phone number validation, formatting, and E.164 compliance. Learn Syria country code +963, mobile prefixes, area codes, and regex patterns. Updated for 2025 with Syriatel, Wafa Telecom operators.

Complete guide to São Tomé and Príncipe phone number format, validation, and integration. Learn +239 country code structure, CST and Unitel STP operators, E.164 formatting, and AGER regulatory requirements.

Complete guide to Taiwan phone numbers: +886 country code, mobile format (09X), area codes, NCC regulations, and validation examples. Learn how to call Taiwan from any country.

Complete guide to Thailand phone number formats, NBTC regulations, and E.164 compliance. Learn mobile prefixes, landline area codes, MNP system, and validation best practices for developers.

Comprehensive Timor-Leste phone number guide for developers. Master +670 country code formatting, E.164 validation, mobile/landline patterns, operator identification, and SMS integration with code examples.

Complete guide to Tokelau phone numbers with +690 country code. Master E.164 formatting, atoll-based number allocation, ITU-T validation patterns, JavaScript regex examples, and TELETOK integration for international dialing.

Complete guide to calling Tonga: +676 country code format, phone number validation, dialing from USA/international, carrier networks, and E.164 formatting for developers.

Complete guide to Trinidad and Tobago phone number formatting with country code +1-868. Learn E.164 validation, bmobile/Digicel carrier identification, mobile number portability (MNP), TATT regulations, and emergency services integration for developers.

Complete guide to +290 country code for Tristan da Cunha phone numbers. Learn international dialing format, validation patterns, and how to call the world's most remote inhabited island.

Complete guide to Tunisia phone number format with +216 country code, 8-digit validation, area codes, and regex patterns. Learn E.164 formatting, operator prefixes (Tunisie Telecom, Ooredoo, Orange), mobile number portability, and implementation code for developers.

Learn how to format, validate, and integrate Turkey phone numbers (country code +90) with E.164 standards. Complete guide covering Turkish mobile numbers, Istanbul area codes (212, 216), BTK regulations, and implementation examples.

Complete guide to Turkmenistan phone number formats, validation patterns, and area codes. Learn E.164 formatting, mobile operator prefixes (TMCell), and regulatory compliance for +993 numbers.

Complete guide to Tuvalu's +688 country code. Learn phone number formats (5-7 digits), validation patterns, mobile prefixes (70/71/90), landline codes (20-29), and implementation examples for developers.

Developer guide for handling USVI phone numbers. Learn area code 340 implementation, E.164 formatting, number validation, FCC compliance, and porting rules. Includes code examples and best practices.

Master US phone number format validation with NANP structure, area codes, regex patterns, and E.164 conversion. Includes toll-free numbers, premium-rate codes, and SMS best practices.

Master Uganda phone numbers with our complete guide covering +256 country code, emergency numbers (999/112), MTN/Airtel prefixes, E.164 validation, UCC regulations, and mobile network integration for developers.

Learn UK phone number formats – from basic structure and area codes to validation with regular expressions. Essential for businesses operating in the UK, developers building telephony applications, and anyone communicating with UK contacts.

Explore the United States (+1) phone number system, focusing on Colorado. Understand NANP structure: area codes (303, 720, 719, 970), 7-digit subscriber numbers, and dialing. Includes regex patterns like `^\+1\s(\d{3})\s(\d{3})\s(\d{4})$` for validation and number portability details.

Explore US area code 432: serving Texas' Permian Basin (Midland, Odessa) since April 5, 2003, after splitting from 915. Covers landline, wireless, VoIP. Managed by NANPA; requires 10-digit dialing. Includes coordinates (e.g., Midland: 31.99735, -102.07791).

Complete guide to Uruguay phone numbers. Learn the +598 country code, 8-digit format, number portability, validation rules, and URSEC regulations for seamless integration.

Comprehensive guide to Venezuelan phone number formats, area codes, and validation. Learn about +58 country code, mobile carriers (Digitel, Movistar, Movilnet), E.164 formatting, and CONATEL regulations for developers.

Master Virginia phone number handling with our comprehensive guide. Learn NANP format, E.164 validation, area codes (703, 571, 540, 804), portability, and FCC compliance.

Comprehensive guide to Western Sahara phone number system including +212 country code, E.164 formatting, and validation implementation for developers and telecom professionals.

Master WhatsApp Cloud API with Meta's hosted solution. Build scalable messaging from 80 to 1,000 messages/second with end-to-end encryption, quality rating system, and business verification.

Master Yemen phone number formats (+967), validation code, and integrate with Yemen Mobile, Sabafon, YOU & Y Telecom. Includes conflict impact, Starlink launch, and dual governance challenges.

Master Zambia phone number formatting, validation, and area codes. Learn E.164 standards, ZICTA compliance, mobile operator prefixes (MTN, Airtel, ZAMTEL), and implement robust validation with code examples.

Explore Bahamas phone number formats (+1-242): structure, validation & dialing. Understand NANP rules, landline/mobile patterns (242[2-9]XX-XXXX), & regex. Includes number portability details and operator ranges. Perfect for developers needing number insights.