Area Code 3923 – Radievo

Overview of Area Code 3923 (Radievo, Bulgaria)

Area code 3923 is a geographic National Destination Code (NDC) within the Bulgarian numbering plan, assigned to the town of Radievo and its surrounding administrative area. Radievo is located in the Yambol Province, in southeastern Bulgaria, and falls under the jurisdiction of the Tundzha municipality. The code is part of the 3xxx series, which covers various regions in the southern and eastern parts of the country.

Geographic Coverage and Administration

The 3923 area code serves Radievo and the immediate villages within the Tundzha administrative district. This is a rural region, with agriculture and light industry being the primary economic activities. The nearest major urban center is Yambol, which uses the area code 46. Calls from Radievo to Yambol require dialing the full national number, including the trunk prefix 0 and the area code.

Dialing Formats and Instructions

For local callers within Bulgaria, the national dialing format is: 0 3923 XXX XXX. The leading '0' is the trunk prefix used for domestic calls. For example, to call a landline in Radievo from Sofia, you would dial: 0 3923 123 456.

For international callers, the format is: +359 3923 XXX XXX. The country code for Bulgaria is +359, and the trunk prefix '0' is omitted. For instance, a caller from the United States would dial: 011 359 3923 123 456 (or +359 3923 123 456 on a mobile phone).

Numbering Plan and Overlays

Bulgarian geographic numbers are typically 7 to 8 digits long after the country code, depending on the area code length. In the case of 3923, the subscriber number is 6 digits, making the total national significant number (NSN) 10 digits (including the leading 0). There are currently no overlay codes or 10-digit dialing requirements in this region; local calls within the same area code can be made using only the subscriber number, though this practice is becoming less common with the proliferation of VoIP and mobile services.

Caller Guidance

For domestic callers outside the 3923 area, always include the trunk prefix and area code. For international callers, ensure you use the correct exit code for your country (e.g., 011 from North America, 00 from most European countries) followed by +359 and the area code without the leading zero. Be aware that while most landline numbers in Bulgaria are assigned to fixed-line operators, number portability allows subscribers to retain their geographic number even if they switch to a VoIP or other service provider, which may affect routing but not the dialing format.