Area Code 3437 – Bolechov, Ivano-Frankivsk

Geographic Overview

The +380 3437 prefix is a geographic National Destination Code (NDC) assigned to the fixed-line telephone network serving the city of Bolechov (Болехів) and its surrounding administrative district within the Ivano-Frankivsk Oblast of western Ukraine. Bolechov is a city of regional significance, located in the Carpathian foothills, and the numbering area covers the urban locality and several adjacent villages. The code is administered by the Ukrainian state telecommunications operator and is used exclusively for PSTN (Public Switched Telephone Network) services.

Dialing Formats

For callers within Ukraine, the national trunk prefix 0 is used, followed by the NDC and the subscriber number. The complete national format is:

• 0 3437 XX-XX-XX (local call from other regions in Ukraine)

For international callers, the Ukrainian country code +380 replaces the trunk prefix, and the NDC is used without the leading zero:

• +380 3437 XX-XX-XX (from abroad)

Local calls within the Bolechov area may be dialed using only the subscriber number if the local exchange supports abbreviated dialing, but the full national format is always valid.

Geographic Allocation and Coverage

This prefix is a geographic allocation, meaning that the number is tied to a physical location. The coverage area includes Bolechov city and the villages of the Bolechivska city hromada (amalgamated territorial community). The numbering plan follows the ITU-T E.164 recommendation, and the NDC length is four digits (3437), with subscriber numbers typically having six or seven digits. The total number length after the country code is 9 digits, excluding the trunk prefix.

Caller Instructions

Local callers (within Ukraine): To call a Bolechov number from another Ukrainian city, dial 0 3437 followed by the subscriber number. For example, to reach a subscriber with the number 123456, dial 0 3437 123456.

International callers: From any country, dial the international access prefix (e.g., 00 from most European countries, 011 from North America), then 380 3437 and the subscriber number. For example, from the US, dial 011 380 3437 123456.

Overlay and Numbering Considerations

As of the latest ITU-T national numbering plan updates, there is no overlay code for this area. The prefix 3437 is unique to Bolechov and its district. However, due to the ongoing modernization of Ukraine's telecom infrastructure, some fixed-line numbers may be migrated to VoIP backbones, but the geographic significance of the NDC remains unchanged for routing and tariff purposes. Callers should always verify the current dialing procedures with their service provider, especially when using VoIP or mobile networks, as some operators may require the full international format even for domestic calls.