Sudan Phone Numbers: Format, Area Code & Validation Guide - phone-number-standards -

Frequently Asked Questions

The Sudan country code is +249. This code is required when dialing Sudanese numbers from another country and acts as a unique identifier for Sudan in international telecommunications.
The E.164 format for Sudanese phone numbers is +249 followed by the 9-10 digit national number (without the leading '0'). For example, a number displayed locally as 0912345678 becomes +249912345678 in E.164 format. This international standard ensures consistency and facilitates interoperability.
Use regular expressions (regex) like /^1[0-9]{8}$/ for general numbers, /^1[58][35-7][0-9]{6}$/ for landlines, and /^(?:1[0-2][0-9]{7}|9[0-3569][0-9]{7})$/ for mobile numbers. For more comprehensive validation, consider specialized data validation libraries or the provided JavaScript examples.
The '0' prefix is used for domestic calls within Sudan. It's placed before the full national number when dialing landline to landline, landline to mobile, or mobile to mobile within the country. This ensures correct call routing within the Sudanese network.
Mobile phone area codes in Sudan include 091 for Sudatel, 092 for Zain Sudan, and 099 for MTN Sudan, among others. It's recommended to refer to the National Telecommunications Corporation (NTC) for the latest area code allocations as these can change periodically.
Dial the international prefix (e.g., 00), followed by Sudan's country code (+249), and then the local number without the leading '0'. For example, to call a Sudanese mobile number, you would dial 00249912345678, replacing '00' with your country's exit code.
Store phone numbers in the E.164 format (+249 followed by the 9-10 digit number). This standardized format ensures consistency and interoperability with international systems. For example, +249123456789.
Replace the '+249' prefix with a '0'. This will render numbers in a familiar format for Sudanese users (e.g., '0912345678'), enhancing readability. However, always store numbers in the E.164 format for internal use.
Always consider the potential impact of conflict on telecommunications infrastructure in Sudan. The Norwegian Refugee Council (NRC) highlights the frequent outages and disruptions. Design your applications with resilience in mind, anticipating potential connectivity issues and implementing appropriate fallback mechanisms.
The Emergency Telecommunications Cluster (ETC) is crucial for maintaining critical communication infrastructure during emergencies in Sudan. Developers should be aware of the ETC's presence and services, especially when building applications for disaster relief or humanitarian aid.
Yes, regular expressions (regex) are effective for validating Sudanese phone numbers. The article provides specific regex patterns for general, landline, mobile, toll-free, and premium numbers, along with JavaScript code examples to implement these checks.
Landline numbers in Sudan generally follow the format 1[58][35-7][0-9]{6}. This includes a '1' prefix, followed by a network code (5 or 8), a regional code, and then the subscriber number. For example, a valid landline number could be 1583456789.
Telecommunication regulations and number formats in Sudan can change periodically. Staying informed about the updates from the NTC (National Telecommunications Corporation) is crucial for maintaining application accuracy and compliance. Regularly review their website for the most current information.
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