Area Code 4586 – Neykovo, Sliven

Overview of Area Code 4586 in Bulgaria

Area code 4586 is a geographic destination code within the Bulgarian national numbering plan, conforming to ITU-T E.164 recommendations. It serves the town of Neykovo and its immediate surroundings, located in the Sliven Province of central Bulgaria. The code is part of the 4xxx range designated for fixed-line services in the eastern and central regions of the country.

Geographic Coverage and Administration

The 4586 code covers Neykovo, a small town in the municipality of Sliven. The administrative center of the province is Sliven, which is serviced by the separate area code 44. Neykovo is situated in the southern part of the province, near the Tundzha River, and is known for its agricultural surroundings. The code is allocated to fixed-line PSTN networks, and calls to this area are routed over the public switched telephone network, though VoIP services may also use the code for geographic number portability.

Dialing Formats

For callers within Bulgaria, the national trunk prefix is 0. To call a Neykovo number, you dial: 0 4586 [subscriber number]. The subscriber number typically consists of 4 to 5 digits, making the total national significant number (NSN) length 8 or 9 digits, including the area code. For example, a local number might be dialed as 04586 12345 from within Bulgaria.

For international callers, the country code for Bulgaria is +359. The leading trunk prefix '0' is omitted. Therefore, you would dial: +359 4586 [subscriber number]. For instance, to reach a subscriber with the local number 12345, you would dial +359 4586 12345 from any foreign country.

Overlay and Numbering Plan Considerations

Currently, there is no overlay code for 4586; it is the sole geographic code for Neykovo. However, as part of the Bulgarian Communications Regulation Commission's (CRC) numbering plan, geographic codes are not portable outside their designated area. Subscribers may retain their numbers when moving within the same geographic area, but not when relocating to a different region. This ensures that the code remains a reliable indicator of the caller's location.

Caller Instructions

Local callers within Neykovo may be able to dial just the subscriber number without the area code, depending on the local network configuration. However, for clarity and to avoid misdialing, it is recommended to always use the full national format. For callers from other Bulgarian regions, the national trunk prefix is required. International callers must use the plus sign (+) or the international access prefix of their country, followed by the country code and the area code without the leading zero.

When calling from a mobile phone, the same rules apply. Mobile operators in Bulgaria automatically handle the national and international prefixes, but it is always safe to use the international format with +359 for calls from abroad.