Area Code 86 – Lomża
The phone area code for Lomża is 86 (international format +4886). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 86
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Lomża
Geographic Coverage and Administrative Jurisdiction
The +48 86 country-code prefix is a geographic National Destination Code (NDC) assigned to the northern-central region of Poland, primarily serving the city of Łomża and its surrounding administrative district. Łomża, located in the Podlaskie Voivodeship, acts as the principal urban center for this numbering area. The code covers the city itself as well as neighboring towns and rural communities within the former Łomża Voivodeship boundaries, including areas such as Zambrów, Wysokie Mazowieckie, and Kolno. This allocation follows the ITU-T E.164 international numbering plan, ensuring unambiguous routing of calls to the correct geographic exchange.
Dialing Formats and Number Structure
Within Poland, calls to numbers in the 86 area require the trunk prefix '0' followed by the NDC and the subscriber's seven-digit local number. For example, a local call to a Łomża subscriber would be dialed as 0 86 XXX XX XX. However, when dialing from abroad, the international access code (typically '00' or '+') is used, followed by Poland's country code '48', the NDC '86', and the seven-digit subscriber number, omitting the leading '0'. Thus, an international caller would dial +48 86 XXX XX XX. It is crucial to note that the leading '0' is only used for domestic calls and must be dropped when calling from outside Poland.
Overlay and Numbering Plan Considerations
As of the latest ITU-T and Polish Office of Electronic Communications (UKE) updates, the 86 area code does not have an overlay code. Subscribers within the Łomża region share the same NDC, and local calls are dialed using the seven-digit subscriber number without the area code when calling within the same exchange. However, for calls from other Polish regions, the full national format (0-86-XXX-XX-XX) is required. The numbering plan is closed, meaning the total length of the national significant number (NSN) is nine digits, including the leading '0' for domestic dialing. This structure is consistent with the European Telecommunication Numbering and Addressing guidelines.
Caller Instructions and Practical Usage
For local callers within Łomża, dialing the seven-digit subscriber number directly is sufficient for calls within the same local exchange. For callers from other Polish cities, the national trunk prefix '0' must be used before the area code. International callers should always use the plus sign (+) followed by the country code and area code, ensuring compatibility with mobile networks and VoIP services. It is also important to note that while the 86 code is primarily associated with fixed-line PSTN services, some VoIP providers may offer virtual numbers with this prefix, allowing businesses to establish a local presence in Łomża without physical infrastructure. When dialing from a mobile phone, the same international format applies, and callers should verify that their service provider includes international dialing capabilities.