Area Code 3511 – Ognyanovo, Pazardzhik

Overview of Area Code +359 3511

The Bulgarian national destination code (NDC) +359 3511 is a geographic area code assigned to the town of Ognyanovo and its immediate vicinity within the Pazardzhik Province of southern Bulgaria. This code is part of the country's open numbering plan, where the trunk prefix '0' is used for domestic calls, while the international prefix '+359' replaces the leading zero for calls originating from abroad. The code is administered under the jurisdiction of the Communications Regulation Commission (CRC) of Bulgaria, following the ITU-T E.164 standard.

Geographic Coverage and Administrative Context

Ognyanovo is a small town located in the Pazardzhik Municipality, approximately 10 kilometers southeast of the city of Pazardzhik. The area code 3511 serves not only Ognyanovo but also several neighboring villages, including Chernogorovo and Zvanichevo, which are part of the same local calling area. The region is situated in the Thracian Plain, near the Maritsa River, and is known for its agricultural production and proximity to the Pazardzhik industrial zone. The administrative center for this code is Pazardzhik, which uses the separate area code 034, but calls between Ognyanovo and Pazardzhik require the full national dialing format if they are not within the same local tariff group.

Dialing Formats and Caller Instructions

For domestic callers within Bulgaria, reaching a subscriber in Ognyanovo requires dialing the trunk prefix 0, followed by the area code 3511, and then the subscriber's 6-digit local number. For example, a local number might be formatted as 0 3511 4XXXX (where X represents the subscriber digits). When calling from outside Bulgaria, the international format is used: +359 3511 4XXXX. It is important to note that the leading '0' of the domestic trunk prefix is omitted in international dialing. Callers from mobile phones within Bulgaria can dial the number in either national format (0 3511 ...) or, in some cases, using the international format (+359 3511 ...), but the national format is standard and ensures proper routing.

Numbering and Overlay Considerations

As of the latest CRC updates, there is no overlay code for the 3511 area, meaning that the geographic area is served solely by this single NDC. Subscriber numbers within this code are 6 digits long, resulting in a total number length of 10 digits when including the area code (excluding the trunk prefix). The capacity of the code is sufficient for the current population density, and no major renumbering is anticipated in the near future. However, as with all Bulgarian geographic codes, number portability is available, allowing subscribers to retain their numbers when switching between fixed-line operators, provided they remain within the same geographic area.

Practical Usage and Cost Implications

Calls to +359 3511 are typically charged as standard fixed-line rates for domestic calls when dialed from within Bulgaria, while international callers will incur their respective international tariffs. For businesses or individuals frequently contacting Ognyanovo, it is advisable to check with their service provider for any bundled minutes or special rates. The code is used exclusively for fixed-line PSTN and VoIP services that are registered to the geographic location, ensuring that emergency services and directory assistance are routed correctly.