Area Code 343 – Marijampolė
The phone area code for Marijampolė is 343 (international format +370343). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 343
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Marijampolė
Overview of Area Code +370 343
Area code 343 is a geographic National Destination Code (NDC) within the Lithuanian numbering plan, assigned to the city of Marijampolė and its surrounding district in the southwestern part of the country. This code is part of the E.164 international dialing structure for Lithuania, which uses the country calling code +370. When dialing from abroad, the full international format is +370 343 XXX XXX (or +370343XXXXXX when the number is written without spaces). Domestically, callers within Lithuania use the national significant number, which begins with the trunk prefix 0 followed by the area code: 0 343 XXX XXX.
Geographic Coverage and Administrative Jurisdiction
Marijampolė is the administrative center of the Marijampolė County, one of Lithuania's ten counties. The area code 343 serves not only the city proper but also the surrounding Marijampolė district municipality, which includes towns such as Kalvarija, Kazlų Rūda, and Šunskai. The region is an important economic and transport hub in the Suvalkija ethnographic area, located near the borders with Poland and the Russian exclave of Kaliningrad.
Dialing Formats and Caller Instructions
- Local callers (within Marijampolė): For calls within the same area code, subscribers may dial only the local subscriber number (typically 7 digits) without the trunk prefix or area code. However, due to number portability and the increasing use of mobile and VoIP services, it is recommended to always dial the full national number (0 343 XXX XXX) to ensure proper routing.
- National callers (from other Lithuanian cities): Dial the trunk prefix 0, then the area code 343, followed by the subscriber number: 0 343 XXX XXX.
- International callers (from abroad): Dial the international access prefix (e.g., 00 from most European countries, 011 from North America), then Lithuania's country code 370, the area code 343 (without the leading trunk prefix 0), and the subscriber number: +370 343 XXX XXX.
Numbering and Overlay Considerations
Lithuania's geographic numbering plan does not currently use overlays for area codes; each geographic region has a unique code. The subscriber numbers within the 343 area code are typically 7 digits long, resulting in a total national significant number length of 9 digits (0 + area code + subscriber number). This is consistent with the ITU-T E.164 recommendation for Lithuania.
Regulatory and Technical Notes
The Communications Regulatory Authority of the Republic of Lithuania (RRT) oversees the allocation and management of numbering resources. Geographic numbers are primarily used for fixed-line PSTN services, but due to number portability, a number with area code 343 may be routed to a VoIP or mobile service if the subscriber has ported their number. Callers should be aware that the geographic association does not strictly guarantee the physical location of the called party, especially in the context of IP-based telephony.