Area Code 977 – Tarragona
The phone area code for Tarragona is 977 (international format +34977). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 977
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Tarragona
Geographic Coverage and Administrative Jurisdiction
The +34 977 area code is a geographic numbering resource assigned to the province of Tarragona, located in the autonomous community of Catalonia in northeastern Spain. This National Destination Code (NDC) covers the entire province, including its capital city, Tarragona, and other significant municipalities such as Reus, El Vendrell, Tortosa, and Amposta. The administrative jurisdiction aligns with the provincial boundaries, ensuring that all fixed-line subscribers within this territory are allocated numbers beginning with 977.
Dialing Formats and Caller Instructions
For local callers within Spain, the national dialing format requires dialing the full nine-digit subscriber number, which includes the area code. For example, to call a fixed line in Tarragona from elsewhere in Spain, you would dial 977 123 456. It is important to note that the trunk prefix '0' is not used in Spanish dialing; the call is placed directly with the area code. For international callers, the format is +34 977 123 456 (or 0034 977 123 456 from countries using international prefix 00). When dialing from a mobile phone, the same international format applies, and the leading '+' is recommended for global compatibility.
Numbering Structure and Overlay Considerations
Spanish fixed-line numbers, including those under 977, consist of nine digits in total: the area code (977) followed by a six-digit subscriber number. This structure provides a capacity of up to one million unique numbers per area code. As of the latest ITU-T E.164 guidelines, no overlay codes have been implemented in the Tarragona province; the 977 code remains the sole geographic code for the region. However, due to the growth of VoIP and the migration of fixed-line services, some numbers may be routed over IP networks, but the geographic association remains unchanged for regulatory and emergency service purposes.
Regulatory and Technical Notes
The Comisión Nacional de los Mercados y la Competencia (CNMC) oversees the allocation and management of Spanish numbering resources. The 977 code is exclusively designated for fixed-line services, and it is not portable to mobile networks. Conversely, mobile numbers in Spain begin with 6 or 7 and are non-geographic. When calling a 977 number from abroad, callers should be aware that international tariffs apply, and some VoIP or toll-free services may not support calls to geographic numbers without proper access arrangements. For emergency services, dialing 112 works across Spain and will route based on the caller's location, not the area code.