Area Code 391 – Dimitrovgrad

Geographic Overview

The +359 391 country code and area code combination is assigned to the geographic region of Dimitrovgrad, a significant urban center located in Haskovo Province, south-central Bulgaria. Dimitrovgrad is an important industrial and transportation hub, situated along the Maritsa River and the key railway line connecting Sofia to Svilengrad and Turkey. The area code 391 serves the city itself and the surrounding settlements within the Dimitrovgrad Municipality. For callers within Bulgaria, the national trunk prefix 0 must be dialed before the area code, resulting in the format 0391 XXX XXX. International callers should dial +359 391 XXX XXX, omitting the leading zero.

Dialing Formats and Instructions

• Local calls (within Dimitrovgrad): Dial the subscriber number directly, which consists of six digits after the area code. The local format is typically XXX XXX.
• National long-distance calls (from other Bulgarian regions): Dial 0 391 XXX XXX. The leading 0 is the national trunk prefix.
• International calls to Dimitrovgrad: Dial +359 391 XXX XXX. The plus sign represents the international access code from your country (e.g., 00 from most European countries, 011 from the US/Canada).
• Calls from Dimitrovgrad to international destinations: Dial the international prefix (00) followed by the country code, area code, and subscriber number.

Numbering Plan and Administration

Bulgaria's numbering plan is regulated by the Communications Regulation Commission (CRC) and follows ITU-T E.164 recommendations. Geographic area codes in Bulgaria are assigned to specific cities and regions, and numbers within these codes are typically used for fixed-line PSTN services. The subscriber number length for geographic codes in Bulgaria is six digits, making the total national significant number (NSN) eight digits when combined with the area code (excluding the trunk prefix). The +359 391 code is part of the closed numbering plan for Bulgaria, meaning that the full national number must be dialed for all calls, including local ones, when using mobile or VoIP networks.

Overlay and Number Portability

As of the latest updates, there is no overlay code for Dimitrovgrad; the 391 code serves the area exclusively. However, fixed-line number portability is available in Bulgaria, allowing subscribers to retain their numbers when changing service providers within the same geographic area. This means that a number with the 391 prefix may be served by any operator, but the geographic association remains tied to the Dimitrovgrad region.

Practical Guidance for Callers

For local callers within Dimitrovgrad, it is common to dial only the six-digit subscriber number. For callers from other parts of Bulgaria, using the full national format (0391 XXX XXX) is essential. International callers should always use the +359 391 format to ensure proper routing. When dialing from a mobile phone, the plus sign is typically used to indicate the international access code, and the leading zero of the trunk prefix is omitted. Always verify the number length and format with the recipient to avoid misdialing.