Area Code 29 – Ostrolęka
The phone area code for Ostrolęka is 29 (international format +4829). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 29
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Ostrolęka
Geographic Overview
The +48 29 country and area code combination corresponds to a geographic numbering plan area in Poland, specifically serving the city of Ostrołęka and its surrounding municipalities within the Masovian Voivodeship. This region, located in north-eastern Poland, is an important administrative and economic hub. The area code 29 is allocated under the Polish National Numbering Plan, which follows the ITU-T E.164 recommendation. It is used for fixed-line telephone services (PSTN) and is assigned to local telecommunications operators providing services within this geographic zone.
Dialing Formats and Instructions
When calling a subscriber in the Ostrołęka area, the national dialing format requires the trunk prefix '0' followed by the area code '29' and the subscriber's seven-digit number. For example, a local call within Poland would be dialed as 0 29 XXX XX XX. However, when calling from abroad, the international format must be used: +48 29 XXX XX XX (or 0048 29 XXX XX XX from many European countries). It is important to note that the leading '0' is not included when dialing from outside Poland.
For callers within the same area code, it is often possible to dial only the seven-digit subscriber number, depending on the operator's local dialing rules. However, for clarity and to avoid misdialing, it is recommended to use the full national format.
Geographic Coverage and Numbering
The 29 area code covers not only the city of Ostrołęka but also the surrounding counties (powiaty) and towns such as Łomża, Kolno, and Ostrow Mazowiecka, which are part of the former Ostrołęka Voivodeship. Subscriber numbers in this area are seven digits long, and the total number length for international calls is 11 digits (including the country code). The numbering plan does not currently have an overlay code for this region, meaning that the 29 code is the sole geographic code for this area.
Caller Instructions
For local callers within Poland, simply dial 29 XXX XX XX if you are in the same area, or 0 29 XXX XX XX if calling from a different region. For international callers, always use +48 29 XXX XX XX. Ensure that you replace the 'XXX XX XX' with the actual seven-digit subscriber number. Be aware that charges for calls to this geographic number are typically lower than calls to mobile or premium-rate numbers, and they are billed according to the caller's tariff plan.