Area Code 4556 – Sotirya
The phone area code for Sotirya is 4556 (international format +3594556). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 4556
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Sotirya
Overview of Area Code 4556
Area code 4556 is a geographic National Destination Code (NDC) within the Bulgarian numbering plan, assigned to the town of Sotirya and its surrounding areas. Sotirya is a small settlement located in the Sliven Province, in the southeastern part of Bulgaria. The code is part of the 4xxx range that designates fixed-line telephone services in the country, administered by the Communications Regulation Commission (CRC) of Bulgaria.
Geographic Coverage and Administration
The 4556 area code covers the administrative territory of Sotirya, which falls under the municipality of Sliven. It serves the town itself and nearby rural localities that rely on the same local exchange. As a geographic code, it is tied to a physical location, and the tariffs for calls to this number are based on the distance and the operator's pricing policy for fixed-line calls.
Dialing Formats
For callers within Bulgaria, the local dialing format requires the trunk prefix 0 followed by the area code and the subscriber number. The complete national format is: 0 4556 XXXXX, where XXXXX is the local subscriber number (typically 5 digits). For example, a local call to a subscriber in Sotirya would be dialed as 04556 12345.
For international callers, the country code for Bulgaria is +359. The leading trunk prefix '0' is omitted. Therefore, the international dialing format is: +359 4556 XXXXX. For instance, a caller from abroad would dial +359455612345 to reach the same number.
Caller Instructions
When calling from a foreign country, you must first dial your country's international access code (e.g., 011 from the US, 00 from most European countries), followed by Bulgaria's country code 359, then the area code 4556 without the leading zero, and finally the subscriber number. If you are calling from a mobile phone, you can typically use the + symbol instead of the international access code.
For local callers, it is important to note that as of recent years, Bulgaria has implemented number portability, but geographic numbers remain associated with the area. If you are calling from a different area code within Bulgaria, you must dial the full national number including the trunk prefix.
Overlay Considerations
Currently, there is no overlay code for the 4556 area. The numbering plan for Bulgaria is closed, meaning that all calls, even local ones, require the full national number (including the area code) to be dialed. This is a standard practice in Bulgaria to ensure unambiguous routing.