Area Code 3564 – Semchinovo

Overview of Area Code 3564 (Semchinovo, Bulgaria)

Area code 3564 is a geographic National Destination Code (NDC) within the Bulgarian national numbering plan, conforming to ITU-T E.164 standards. It is assigned to the town of Semchinovo and its surrounding administrative area, located in the Pazardzhik Province of southern Bulgaria. This code is used for fixed-line (PSTN) services, and it routes calls to specific central office exchanges within the region.

Geographic area codes in Bulgaria are part of the national numbering plan administered by the Communications Regulation Commission (CRC). The code 3564 is not portable to mobile networks; it remains tied to the physical location of the line, in accordance with the principle of geographic number allocation.

Geographic Coverage and Jurisdiction

The 3564 area code covers the municipality of Septemvri, with Semchinovo being a key locality. The region is situated in the Thracian Plain, near the Maritsa River, and is known for its agricultural production. The code serves both residential and business subscribers within this defined geographic boundary. The administrative center of the municipality, Septemvri, is approximately 20 kilometers west of Pazardzhik, the provincial capital.

Dialing Formats and Instructions

• National dialing (within Bulgaria): To call a fixed-line number in Semchinovo from another Bulgarian city, dial 0 3564 XXXXX. The leading zero is the trunk prefix used for national calls. The local subscriber number is typically 5 to 6 digits long, making the complete national number 0-3564-XXXXX.
• International dialing (from abroad): Callers from outside Bulgaria should dial the international access prefix (e.g., 00 from most European countries, 011 from North America), followed by Bulgaria's country code +359, then the area code without the leading zero, and the local subscriber number: +359 3564 XXXXX.

For example, a local number in Semchinovo might be formatted as: +359 3564 12345 when dialed internationally, or 03564 12345 when dialed domestically.

Overlay Considerations and Caller Guidance

Currently, there is no overlay code for 3564, meaning that the area code is unique to this geographic region. Local calls within the same area code can often be made using only the subscriber number, depending on the operator's dialing plan. However, for clarity and consistency, it is recommended to always use the full national format, especially when calling from mobile phones or VoIP services.

For local callers within the 3564 area, dialing the subscriber number directly may work for landline-to-landline calls. For callers from other regions or countries, the full international format is essential. Mobile network operators in Bulgaria automatically handle the conversion of national numbers to international format when roaming, but it is always safe to store numbers in the +359 format.