Saint Helena, Ascension, and Tristan da Cunha Phone Numbers: Format, Area Code & Validation Guide - phone-number-standards -

Frequently Asked Questions

+290 is the country code for Saint Helena, Ascension, and Tristan da Cunha. Always include this code for international calls to ensure proper routing and connectivity. This is crucial for applications handling international calls or SMS messages.
To dial a landline in Saint Helena from overseas, dial the international prefix (00), followed by the country code (+290), and then the 5-digit local number. For example, 00 +290 22012. Remember to consider the time difference, as Saint Helena observes GMT.
The article provides specific regular expressions (regex) for validating phone numbers. Use /^2[0-57-9]\d{4}$/ for landlines, /^[5-6]\d{4}$/ for mobiles, and /^8\d{4}$/ for special services. Always include the +290 country code check for complete validation, especially in international contexts.
Sure South Atlantic is the primary telecommunications operator for Saint Helena, Ascension Island, and Tristan da Cunha. They operate the modern digital network across these territories, providing essential connectivity and communication services. Remember to account for potential bandwidth limitations when developing applications, especially for Tristan da Cunha, despite the improvements due to St Helena’s connection to the Equiano submarine cable in 2023.
Understanding the unique phone number format for Saint Helena, Ascension, and Tristan da Cunha is crucial for developers to accurately validate and process numbers in applications. Correct formatting prevents errors, ensures successful call routing, and improves the user experience. Adhering to the specified format also simplifies integration with international telecommunication systems.
Store numbers in E.164 format (+290XXXXX) for international compatibility. Display locally as 5-digit numbers for user convenience. Include a territory identifier in metadata to avoid ambiguity and enhance data management. For display, use spacing for better readability (e.g., +290 220 123).
Local calls within Saint Helena, Ascension, and Tristan da Cunha use a simple 5-digit dialing format. This applies whether calling within the same territory or between different islands. No prefixes are needed, even for mobile-to-landline calls, simplifying local communication.
Saint Helena and Ascension Island are on GMT, while Tristan da Cunha is on GMT+1. Consider this difference for scheduling apps or time-sensitive communications like appointment reminders or event notifications to avoid miscommunication or scheduling errors.
Sure South Atlantic provides comprehensive coverage on Saint Helena. Ascension Island's coverage is more focused on strategic areas, while Tristan da Cunha's coverage is concentrated around settlements. Consider these variations when designing applications to handle potential connectivity issues and implement appropriate error handling, like enabling offline access where coverage is less reliable.
Recent 2023 regulatory updates include enhanced monitoring of unauthorized services, stricter equipment licensing, updated emergency service protocols, and reinforced operator exclusivity for Sure South Atlantic. Non-compliance can result in penalties. Consult the Saint Helena Government Communications Division's website for details.
No, you cannot use just any telecommunications equipment in Saint Helena, Ascension, and Tristan da Cunha. Due to stricter equipment licensing requirements implemented in 2023, ensure any equipment used complies with regulations. Failure to do so could result in penalties. Check with the Saint Helena Government Communications Division for the latest guidelines.
For displaying Saint Helena phone numbers, always include the +290 country code in international contexts. Use consistent spacing (+290 220 123) for readability. Follow the 5-digit local format while maintaining international compatibility (+290 prefix) to avoid confusion.
Provide clear, user-friendly error messages for invalid number formats. Implement robust error handling for network issues, considering the islands' remote location and potential latency. Give clear feedback on call/message status to improve user experience and prevent frustration.
Saint Helena, Ascension, and Tristan da Cunha, as remote territories, have unique telecommunications challenges and a distinct regulatory environment. This necessitates specific regulations to ensure service quality, manage limited resources, and maintain compliance with international standards.
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