Area Code 823 – Salamanca
The phone area code for Salamanca is 823 (international format +34823). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 823
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Salamanca
Geographic Scope and Administrative Jurisdiction
The +34 823 numbering block is a geographic area code assigned to the province of Salamanca, within the autonomous community of Castile and León, in western Spain. This code covers the provincial capital, Salamanca city, and its surrounding municipalities, including Villamayor, Santa Marta de Tormes, and Carbajosa de la Sagrada. The area is served by both fixed-line PSTN and VoIP services, with numbers typically used for residential, commercial, and public administration lines.
Dialing Formats and Procedures
When calling a Salamanca fixed-line number from within Spain, subscribers must dial the full nine-digit national significant number, which includes the area code. For example, a local number might be dialed as 823 456 789. The area code is an integral part of the number and cannot be omitted, even for calls within the same locality. This is standard practice across Spain since the 1998 national numbering reform.
For international callers, the format is +34 823 456 789 (or 0034 823 456 789 from countries using the international prefix 00). The plus sign (+) represents the international access code, and the country code for Spain is 34. No trunk prefix (like '0') is used when dialing from abroad.
Numbering and Overlay Considerations
Salamanca province is also served by the older area code 923. Both 923 and 823 are geographic codes for the same region, but they are not overlays in the traditional sense. Instead, they are separate numbering pools assigned to different operators or service types. The 823 range was introduced to provide additional capacity, particularly for newer fixed-line services and VoIP providers. There is no need for local dialing changes; all calls must include the area code.
Caller Instructions
- Local callers (within Spain): Dial 823 XXX XXX (nine digits total).
- International callers: Dial +34 823 XXX XXX.
- Emergency services: Always dial 112 (European emergency number) or 091 (National Police) – these are independent of area codes.
When calling from a mobile phone in Spain, the same format applies: you must include the area code. For businesses, it is essential to display numbers in international format (+34 823 ...) to facilitate calls from abroad and to avoid confusion with mobile numbers, which typically begin with 6 or 7.
Regulatory and Technical Notes
Numbering in Spain is regulated by the Comisión Nacional de los Mercados y la Competencia (CNMC). The 823 prefix is part of the national numbering plan under ITU-T E.164. Fixed-line numbers are portable within the same geographic area, meaning subscribers can retain their number when changing operators, but not when moving to a different province. VoIP services using 823 numbers are subject to the same geographic routing rules, ensuring that calls are terminated appropriately based on the number's assigned location.