Area Code 846 – Bizkaia
The phone area code for Bizkaia is 846 (international format +34846). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 846
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Bizkaia
Geographic Scope and Regulatory Framework
The +34 846 numbering block is a geographic allocation within the Spanish national numbering plan, administered by the Comisión Nacional de los Mercados y la Competencia (CNMC). It corresponds to the province of Bizkaia, in the Basque Country (País Vasco), and is specifically assigned to the municipality of Bermeo and its surrounding coastal area. As a geographic prefix, 846 is part of the legacy fixed-line PSTN infrastructure, although calls may be routed over IP-based networks by operators. The prefix is used for fixed-line services, including residential, business, and public payphones, and is not portable to mobile networks.
Dialing Procedures and Number Format
Within Spain, calls to 846 numbers require dialing the full nine-digit subscriber number, which includes the prefix. For example, a local call to a Bermeo landline would be dialed as 846 XXX XXX. No trunk prefix (0) is used for domestic calls, as Spain adopted closed numbering plan in 1998. From abroad, callers must dial the international access code (00 or +), followed by Spain's country code 34, and then the nine-digit number, omitting any leading zero. Thus, a call from the United States would be dialed as 011 34 846 XXX XXX.
Geographic Coverage and Local Significance
The 846 area code serves Bermeo, a historic fishing town and key port on the Bay of Biscay, as well as nearby localities such as Mundaka, Sukarrieta, and Busturia. These communities are part of the Busturialdea region, known for its maritime economy and tourism. The prefix is essential for local businesses, public administration, and residents, providing a stable geographic identity that supports emergency services (112) and local commerce. Unlike mobile numbers, which are non-geographic, the 846 prefix allows callers to identify the likely location of the called party, which can be important for local service providers and for tariffing purposes.
Overlay and Numbering Evolution
Currently, no overlay code has been introduced for the 846 area. The Spanish regulator has not yet exhausted the numbering capacity in Bizkaia, so the 846 block remains dedicated to Bermeo and its environs. However, with the ongoing migration from PSTN to VoIP, some operators may route 846 numbers over IP networks, but the geographic significance is retained for number portability within the fixed network. Users should be aware that while the prefix indicates a fixed line, the actual service may be delivered via fiber or cable, and call quality is typically high.
Caller Instructions and Practical Advice
For local callers within Bizkaia, dialing the nine-digit number is sufficient. For callers from other Spanish provinces, the same nine-digit number is used without any additional prefix. International callers must always include the +34 country code. It is advisable to store numbers in international format (+34 846 XXX XXX) to avoid confusion when traveling. Businesses in Bermeo should prominently display their numbers in both national and international formats to facilitate customer contact from abroad.