Area Code 23 – Zawia

Overview of Area Code 23 (Zawia, Libya)

Area code 23 is a geographic National Destination Code (NDC) assigned to the city of Zawia (also spelled Az Zawiyah or Zawiya) and its surrounding administrative district in northwestern Libya. As part of the Libyan numbering plan under ITU-T E.164, this code is used for fixed-line (PSTN) services within the region. The full international dialing format for a Zawia number is +218 23 XXX XXX, where the subsequent digits represent the local subscriber number. The code is administered by the Libyan General Telecommunications Authority and is allocated to the state-owned operator Libyana for fixed-line infrastructure, though local loop services may be provided by other licensed operators.

Geographic Coverage and Dialing Conventions

Zawia is a major coastal city located approximately 45 kilometers west of Tripoli, serving as the capital of the Zawia District. The area code covers the city center, its industrial zones, and nearby towns such as Sabratha and Sorman, which are within the same NDC area. For local callers within Libya, dialing a Zawia number requires the trunk prefix 0 followed by the area code and subscriber number: 023 XXX XXX. For international callers, the format is +218 23 XXX XXX (or 00218 23 XXX XXX from countries using the international prefix 00). It is important to note that the leading '0' is only used domestically and must be omitted when dialing from abroad.

Numbering Structure and Overlay Considerations

Libyan fixed-line numbers are typically 9 digits long when including the area code (e.g., 023 XXX XXX). The subscriber number after the area code is usually 6 to 7 digits, depending on the operator and historical allocations. Currently, there are no overlay codes in Zawia; the area code 23 remains exclusive to this geographic region. However, with the growth of VoIP and mobile services, some numbers may be routed over IP networks, but the geographic significance of the code is retained for regulatory and emergency services purposes.

Caller Instructions and Practical Tips

For local callers within Zawia, it is possible to dial the subscriber number directly without the area code if the call is within the same exchange, but this practice is becoming less common with modern networks. For callers from other Libyan cities, always use the trunk prefix 0 followed by 23. For international callers, ensure you have the correct country code (+218) and drop the trunk prefix. Be aware that due to network congestion or routing issues, international calls may sometimes require alternative routes. It is also advisable to confirm the correct number length with your contact, as some older numbers may have fewer digits.