Area Code 421 – Yefren

Geographic Overview

The +218 421 area code is a geographic National Destination Code (NDC) assigned to the Yefren region in Libya. Yefren is a city located in the Nafusa Mountains, within the Jabal al Gharbi District in the northwestern part of the country. This area code serves the fixed-line telephone network for Yefren and its surrounding towns and villages, including Al-Asabaa and other nearby communities. As a geographic code, it is tied to the PSTN infrastructure in that specific region.

Dialing Formats

To call a fixed-line number in Yefren from within Libya, subscribers must dial the trunk prefix 0, followed by the area code 421, and then the local subscriber number. For example, if the local number is 123456, the domestic dialing format would be 0 421 123456. From outside Libya, callers must use the international access code (typically 00 or +), followed by Libya's country code 218, then the area code 421 (without the leading 0), and the subscriber number. Thus, the international format is +218 421 123456.

Numbering Details

Libyan fixed-line numbers are typically 9 digits long when dialed internationally, including the country code but excluding the trunk prefix. In the case of Yefren, the number structure is: country code (218) + area code (421) + a 5-digit subscriber number. This results in a total of 9 digits after the plus sign. The subscriber number length may vary, but the overall structure remains consistent with ITU-T E.164 recommendations.

Caller Instructions

For local callers within Libya, always include the trunk prefix 0 before the area code when dialing from a different region. For callers within the same area code, it may be possible to dial only the local number, but it is safer to use the full domestic format. For international callers, ensure you have the correct country code and drop the leading 0. Always verify the number with the recipient, as mobile numbers in Libya use different prefixes and are not covered by this geographic code.

Overlays and Regulatory Notes

As of the latest available data, there are no overlay codes or major changes affecting the 421 area code. The Libyan telecom regulator, General Authority of Communications and Informatics, manages numbering resources. Fixed-line services in this region are primarily provided by the state-owned operator, Libyana, and other licensed operators. For the most current dialing procedures, especially if you are using VoIP or mobile services, consult your service provider.