Area Code 3557 – Byaga
The phone area code for Byaga is 3557 (international format +3593557). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 3557
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Byaga
Geographic Overview
The Bulgarian national destination code 3557 is a geographic area code assigned to the town of Byaga (also transliterated as Byala or Byaga depending on local administrative usage) and its immediate surrounding settlements within the Plovdiv Province of central Bulgaria. This code is part of the national numbering plan administered by the Communications Regulation Commission (CRC) under the framework of ITU-T E.164. The geographic area covered by 3557 is primarily rural, with Byaga serving as the administrative and commercial center. The code is used for fixed-line PSTN services, and subscribers within this area are typically connected via the local incumbent operator (e.g., A1 Bulgaria, Yettel, or Vivacom) or alternative fixed-line providers that have been allocated numbers within this geographic range.
Dialing Formats and Usage
When calling a fixed-line subscriber in Byaga from within Bulgaria, the national trunk prefix 0 must be dialed before the area code, followed by the subscriber number. The full national format is 0 3557 XXXXX, where the subscriber number typically consists of 5 to 6 digits, resulting in a total national significant number (NSN) length of 8 to 9 digits (excluding the trunk prefix). For example, a local number might be 0 3557 12345.
From abroad, callers must use the international access prefix (e.g., 00 or +), followed by the Bulgaria country code 359, then the area code 3557 without the leading trunk zero, and finally the subscriber number. The international format is +359 3557 12345. It is crucial to omit the leading zero of the area code when dialing from outside Bulgaria.
Overlay and Numbering Considerations
As of the latest CRC updates, there is no overlay code for the 3557 area. The code remains exclusively geographic, and number portability is available for fixed-line services, allowing subscribers to retain their numbers when switching providers, provided they remain within the same geographic area. For callers within Bulgaria, local calls within the same area code may be dialed using only the subscriber number, but for clarity and consistency, the full national format is recommended. International callers should always use the +359 format to avoid errors.
Practical Guidance for Callers
- Domestic callers: Dial 0 3557 XXXXX from any phone in Bulgaria.
- International callers: Dial +359 3557 XXXXX (replace + with your country's international prefix if not using a mobile phone).
- Emergency and special numbers: Always dial the national emergency numbers (112) regardless of the area code.
Byaga is a small community, and the 3557 code serves a limited number of subscribers. For businesses or individuals establishing a presence in the area, obtaining a local number may enhance trust and accessibility for local customers. However, with the rise of VoIP and mobile services, many residents also rely on non-geographic numbers, but the geographic code remains essential for traditional fixed-line connectivity.