Area Code 378 – Bartin

Overview of Area Code 378

Area code 378 is a geographic National Destination Code (NDC) within the Turkish numbering plan, assigned to the province of Bartın on the Black Sea coast of Türkiye. It covers the administrative boundaries of Bartın Province, including its central district and the towns of Amasra, Kurucaşile, and Ulus. The code is used for fixed-line (PSTN) services and is allocated by the Information and Communication Technologies Authority (BTK) of Türkiye.

Dialing Formats

When calling a Bartın landline from within Türkiye, subscribers must dial the trunk prefix 0 followed by the area code 378 and the 7-digit local subscriber number. For example, to reach a number in Bartın city center, you would dial: 0 378 234 56 78. From abroad, callers must use the international access code (typically 00 or +), followed by Türkiye's country code 90, then the area code 378 without the leading zero, and the subscriber number: +90 378 234 56 78.

Geographic Coverage and Administration

Bartın Province is a relatively small administrative region, bordered by Zonguldak to the west, Karabük to the south, and Kastamonu to the east. The area code 378 is exclusively used for landlines within this province, and it does not overlay with other area codes. The province is known for its historic port town of Amasra, a popular tourist destination, and its scenic river valleys. The local telephone network is fully digital and supports standard PSTN services, including ADSL and fiber-optic broadband in urban areas.

Caller Instructions

For local callers within Bartın, it is possible to dial only the 7-digit subscriber number for calls within the same area code, though the national format (0 378) is always acceptable. For callers from other Turkish provinces, always include the trunk prefix and area code. International callers should note that Turkish numbers are variable in length, and the total number of digits after the country code is typically 10 (including the area code). Ensure you omit the initial '0' when dialing from abroad.

Regulatory and Technical Notes

As part of the Turkish numbering plan, area code 378 is classified as a geographic code, meaning that the tariff for calls to this code is based on the distance and the operator's pricing policy. Number portability is available within Türkiye, so a subscriber may retain their number when switching operators, but the geographic significance remains tied to the original location. For emergency services, dial 112 (national emergency number) regardless of the area code.