Area Code 859 – Huelva
The phone area code for Huelva is 859 (international format +34859). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 859
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Huelva
Overview of Area Code 859 (Huelva, Spain)
Area code 859 is a geographic National Destination Code (NDC) within the Spanish national numbering plan, administered under the framework of the International Telecommunication Union's E.164 recommendation. It is assigned to the province of Huelva, located in the autonomous community of Andalusia, in southwestern Spain. This code is used for fixed-line telephone services (PSTN) and is also utilized by some VoIP providers offering local numbers. The geographic coverage includes the city of Huelva (the provincial capital) and its surrounding municipalities, such as Aljaraque, Punta Umbría, and Moguer, among others.
Dialing Formats and Usage
When calling a fixed-line number in Huelva from within Spain, the national trunk prefix 0 is not used; instead, callers dial the nine-digit number starting with 859. For example, a local number might be 859 XX XX XX. From abroad, callers must use the international prefix (00 or +) followed by Spain's country code 34 and then the nine-digit number, omitting any leading zero. Thus, an international call would be formatted as +34 859 XX XX XX. It is important to note that Spanish fixed-line numbers are not area-code separated for local dialing; the entire nine-digit sequence is always dialed, even for calls within the same province.
Regulatory and Technical Considerations
As a geographic code, 859 is subject to number portability, meaning subscribers can retain their number when changing operators, but the geographic significance remains tied to the Huelva area. The Comisión Nacional de los Mercados y la Competencia (CNMC) oversees the allocation and management of numbering resources in Spain. Overlay plans have not been introduced for Huelva, so the 859 code is the sole geographic code for the province, alongside the older 959 code, which was used before the 1998 national renumbering that added the leading '8' to most geographic codes. Today, both 859 and 959 are in use, but 859 is more commonly assigned to new lines. For callers, there are no special tariffs associated with geographic codes; charges depend on the caller's operator and subscription plan. For businesses, having a local 859 number can enhance local presence and customer trust, especially for companies targeting the Huelva market.