Area Code 364 – Corum

Overview of Area Code +90 364

Area code 364 is the National Destination Code (NDC) assigned to the province of Çorum in the Central Black Sea region of Türkiye. It is a geographic code, meaning that it is tied to a specific administrative area and is used for fixed-line (PSTN) services within that province. The code is part of the Turkish national numbering plan, which follows ITU-T E.164 recommendations. When dialing from abroad, the full international format is +90 364 XXX XX XX, where +90 is the country code for Türkiye.

Geographic Coverage and Administrative Jurisdiction

The 364 area code covers the entire province of Çorum, including its central district and all connected towns and villages. Key locations served by this code include:

• Çorum (central city) – the provincial capital and largest urban center.
• Alaca – a district known for its historical Hittite sites.
• Osmancık – a district along the Kızılırmak River.
• Sungurlu – an important agricultural and commercial hub.
• İskilip – a district famous for its pickles and historical architecture.

All fixed-line subscribers within these districts share the same area code, and no overlay codes have been introduced. Therefore, the area code uniquely identifies the province for routing purposes.

Dialing Formats

Understanding the correct dialing procedure is essential for both domestic and international callers.

• Local calls within Çorum province: When calling a number within the same area code, you can dial the 7-digit subscriber number directly (e.g., XXX XX XX). However, it is common practice in Türkiye to always include the area code, even for local calls, to avoid confusion.
• Domestic calls from other provinces in Türkiye: Dial 0 364 XXX XX XX. The leading '0' is the trunk prefix used for all domestic long-distance calls.
• International calls from abroad: Dial +90 364 XXX XX XX (or 00 90 364 XXX XX XX from most countries). The plus sign or the international access code replaces the domestic trunk prefix.

Caller Instructions

For callers within Türkiye, always use the 0 prefix when calling a 364 number from a different province. For local calls, you may omit the 0 and area code, but using the full national format is recommended for clarity. For international callers, ensure you have the correct country code (+90) and drop the leading 0. For example, to call a Çorum landline with the subscriber number 212 34 56, you would dial +90 364 212 34 56 from abroad.

Numbering Structure and Technical Notes

Fixed-line numbers in Çorum are 7 digits long, excluding the area code. The first digit of the subscriber number often indicates the specific district or exchange, but this is not a strict rule. The numbering plan is closed, and all numbers are allocated by the Information and Communication Technologies Authority (BTK). While number portability is available in Türkiye, it primarily applies to mobile numbers; fixed-line portability is limited but possible within the same geographic area. VoIP services may also use this area code if they provide fixed-line replacements, but the geographic association remains.