Area Code 259 – Bihor
The phone area code for Bihor is 259 (international format +40259). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 259
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Bihor
Geographic Overview
The +40 259 country and area code combination corresponds to the geographic numbering plan area of Bihor County, located in northwestern Romania. This area code is assigned under the national numbering plan administered by the National Authority for Management and Regulation in Communications (ANCOM) in accordance with ITU-T E.164 recommendations. The code serves the administrative seat, Oradea, as well as other urban and rural localities within Bihor County, including but not limited to Beiuș, Marghita, Salonta, Aleșd, and Valea lui Mihai.
Dialing Formats
When dialing a fixed-line number in Bihor from within Romania, the national trunk prefix '0' is used, followed by the area code and the subscriber number. The complete national format is 0259 XXX XXX, where '0' is the trunk prefix and '259' is the National Destination Code (NDC). From abroad, callers must use the international prefix (typically '00' or '+') followed by Romania's country code '40', the area code without the leading '0', and the subscriber number: +40 259 XXX XXX.
Numbering and Overlays
Subscriber numbers within the 259 area code are seven digits long, making the total national number length ten digits including the trunk prefix. Currently, there is no overlay code for Bihor; the 259 code remains the sole geographic code for the county. However, ANCOM has implemented number portability, allowing subscribers to retain their numbers when switching between fixed-line operators within the same geographic area.
Caller Instructions
For local callers within Bihor, dialing the full national format (including the area code) is mandatory, as per Romanian numbering conventions. For international callers, it is essential to omit the leading '0' of the area code when dialing from abroad. For example, to call a fixed line in Oradea from the United States, one would dial: 011 40 259 XXX XXX. From a mobile phone, using the '+' sign is recommended: +40 259 XXX XXX.
Service and Usage
The 259 code is exclusively used for fixed-line services, including PSTN and VoIP-based fixed telephony. It is not assigned to mobile networks, which use non-geographic mobile prefixes. Businesses and residents in Bihor rely on this code for local communications, and it is an integral part of the county's telecommunications infrastructure.