Area Code 978 – Teruel
The phone area code for Teruel is 978 (international format +34978). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 978
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Teruel
Geographic Coverage and Administrative Context
The +34 978 country-code prefix is the National Destination Code (NDC) assigned to the province of Teruel, located in the autonomous community of Aragon in northeastern Spain. This geographic area code covers the entire province, including its capital city, Teruel, as well as significant municipalities such as Alcañiz, Andorra (Teruel), Calamocha, and Utrillas. The numbering area is administered under Spain's national numbering plan, which follows ITU-T E.164 recommendations. The province is characterized by its mountainous terrain and low population density, which influences the distribution of telephone exchanges and the deployment of fixed-line infrastructure.
Dialing Formats and Caller Instructions
For domestic callers within Spain, the prefix 978 is dialed as a single national significant number (NSN) of nine digits, i.e., 978 XXX XXX. No trunk prefix '0' is used for domestic calls since Spain adopted the closed numbering plan in 1998. For international callers, the full E.164 format is +34 978 XXX XXX. When calling from abroad, you must replace the leading '+' with the appropriate international access code (e.g., '011' from North America, '00' from most European countries). Local calls within the same province do not require any additional prefix; simply dial the nine-digit number. However, if you are calling a Teruel number from a different province or from a mobile phone, you must still include the full nine-digit number, as there are no separate area code dialing rules.
Numbering and Overlay Considerations
The 978 prefix is exclusively allocated to fixed-line services (PSTN and VoIP) within the province. It is not used for mobile services, which are assigned to non-geographic prefixes such as 6XX and 7XX. As of the latest ITU-T and Spanish regulatory updates, there is no overlay plan for Teruel; the 978 code remains the sole geographic code for the province. Subscribers may port their fixed-line numbers to other operators, but the geographic significance of the prefix is retained, meaning that a number starting with 978 will always be associated with the Teruel area, even if the service is provided via VoIP or a different operator. This is important for emergency services and for determining the physical location of the caller in some cases.
Usage and Practical Information
Businesses and residents in Teruel rely on this prefix for their daily communications. When listing a Teruel number on websites or marketing materials, it is advisable to present it in international format (+34 978 XXX XXX) to avoid confusion for international clients. For travelers or temporary visitors, local SIM cards and mobile phones can call these numbers at standard national rates, which are typically included in domestic call bundles. It is also worth noting that calls to 978 numbers from abroad may incur higher international tariffs, depending on the caller's operator. For any assistance with number portability or service activation, users should contact their respective telecommunications provider.