Area Code 4557 – Bikovo
The phone area code for Bikovo is 4557 (international format +3594557). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 4557
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Bikovo
Geographic Overview
The +359 4557 prefix is a geographic National Destination Code (NDC) assigned to the town of Bikovo, located in the Burgas Province of southeastern Bulgaria. Bikovo is situated approximately 8 kilometers northwest of the city of Burgas, the province's administrative center and Bulgaria's fourth-largest city. The code serves the fixed-line telephone network of Bikovo and its immediate vicinity, operating under the jurisdiction of the Bulgarian Communications Regulation Commission (CRC).
Dialing Formats
For callers within Bulgaria, the number is dialed as 04557 XXX XX (where X represents the subscriber's local number). The leading '0' is the trunk prefix used for domestic calls. For international callers, the format is +359 4557 XXX XX or 011 359 4557 XXX XX from North America. When dialing from abroad, the trunk prefix '0' is omitted.
Local vs. International Calls
Local calls within the Bikovo area may be dialed using only the subscriber number if the caller is within the same local calling area, depending on the specific operator's dialing plan. However, for calls from other regions in Bulgaria, the full national format (including the area code) is required. International callers must always include the country code and area code, omitting the leading zero.
Numbering and Overlay
Subscriber numbers under this prefix typically consist of 5 to 6 digits after the area code, resulting in a total national significant number (NSN) length of 9 or 10 digits, in accordance with ITU-T E.164 recommendations. As of the latest CRC updates, there are no overlay codes or renumbering plans affecting this geographic area, and the prefix remains dedicated to fixed-line services.
Caller Instructions
For domestic callers outside Bikovo: dial 0 4557 followed by the subscriber number. For international callers: dial your country's exit code (e.g., 00 from most European countries), then 359 4557, followed by the subscriber number. Always verify the current dialing procedures with your service provider, as VoIP and mobile networks may require alternative formats.