Area Code 331 – Asenovgrad
The phone area code for Asenovgrad is 331 (international format +359331). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 331
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Asenovgrad
Geographic Overview
The +359 331 country-code and area-code combination is a geographic allocation within the Bulgarian national numbering plan, specifically assigned to the Asenovgrad telephone exchange area. Asenovgrad is a town in Plovdiv Province, south-central Bulgaria, situated at the foot of the Rhodope Mountains. The numbering area covers Asenovgrad itself and the surrounding villages that are part of its local calling zone. The administrative jurisdiction falls under the Bulgarian Communications Regulation Commission (CRC), which oversees the national numbering plan in accordance with ITU-T E.164 recommendations.
Dialing Formats and Usage
When calling a landline in Asenovgrad from within Bulgaria, subscribers must dial the trunk prefix '0' followed by the area code '331' and the subscriber number. The national significant number (NSN) for geographic numbers in Bulgaria is 8 digits, meaning the local subscriber number after the area code is 5 digits. For example, a typical Asenovgrad number might be formatted as 0 331 12345 when dialed domestically.
From abroad, callers must use the international prefix (typically '+' or '00') followed by Bulgaria's country code '359', then the area code without the leading trunk '0', and finally the subscriber number. Thus, the same number would be dialed as +359 331 12345. It is important to note that the area code is an integral part of the national significant number and must always be dialed, even for local calls within Asenovgrad, because Bulgaria employs an open dialing plan with mandatory area code dialing for all calls.
Caller Instructions
- Local callers (within Asenovgrad): Dial the full national number: 0 331 12345.
- Domestic callers from other Bulgarian regions: Dial the same format: 0 331 12345.
- International callers: Dial your country's exit code (e.g., 011 from the US/Canada, 00 from most European countries) followed by 359 331 12345.
Overlays and Numbering Considerations
As of the latest CRC updates, there are no overlay codes in the Asenovgrad area; the 331 area code remains the sole geographic code for this region. However, number portability is available in Bulgaria, allowing subscribers to retain their numbers when switching providers, but this does not change the geographic significance of the code. The area code is strictly used for fixed-line services; mobile numbers in Bulgaria are identified by their own non-geographic prefixes (e.g., 87, 88, 89, 98, 99) and are not tied to a specific location.
For businesses or individuals establishing a presence in Asenovgrad, obtaining a local number with the 331 code can enhance local trust and accessibility. When dialing from a mobile phone within Bulgaria, the same national dialing rules apply, and call charges may vary depending on the caller's tariff plan.