Area Code 342 – Gaziantep
The phone area code for Gaziantep is 342 (international format +90342). Browse local exchange codes (NXX) and carrier assignments below.
📍 Geographic Location of Gaziantep
Geographic Overview
The +90 342 country and area code combination is assigned to the province of Gaziantep, a major industrial and agricultural hub in southeastern Türkiye. This geographic code covers the central districts of Şahinbey and Şehitkamil, as well as surrounding towns and villages within the provincial boundaries. Gaziantep is renowned for its gastronomy and textile industries, and the 342 code serves a population exceeding two million, making it one of the busiest regional dialing codes in the country.
Dialing Formats
When calling a landline in Gaziantep from abroad, you must dial the international access prefix (e.g., 00 from most countries), followed by Türkiye's country code +90, then the area code 342 (without the leading zero), and finally the 7-digit local subscriber number. For example, a local number 456 78 90 would be dialed as +90 342 456 78 90 from an international line.
Domestic callers outside the 342 area must dial 0 342 followed by the 7-digit number. Within the same area code, local calls can be made using only the 7-digit number, though some operators may require the full national format due to network modernization. The total number length for a complete international dialing sequence is 12 digits after the plus sign (country code + area code + subscriber number).
Regulatory and Technical Notes
The 342 code is classified as a geographic number under the ITU-T E.164 national numbering plan of Türkiye, managed by the Information and Communication Technologies Authority (BTK). Number portability allows subscribers to retain their 342 numbers when switching between fixed-line operators, but the number remains geographically tied to the Gazianthet exchange area. As of recent years, no overlay code has been introduced for Gaziantep, meaning 342 remains the sole area code for the province.
For callers using VoIP or mobile networks, it is essential to include the area code even when dialing from a mobile phone, as Turkish mobile numbers are prefixed with 5xx and are not geographically assigned. When storing contacts, always use the international format with the leading plus sign to ensure proper routing from any location.