Area Code 2431 – Trikala
The phone area code for Trikala is 2431 (international format +302431). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 2431
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Trikala
Overview of Area Code 2431 (Trikala, Greece)
Area code 2431 is a geographic National Destination Code (NDC) assigned to the city of Trikala and its surrounding metropolitan area, located in the Thessaly region of central Greece. This code is part of the Greek national numbering plan, which adheres to the ITU-T E.164 standard. The geographic area served by 2431 encompasses the municipal units of Trikala, including the urban center and nearby suburban communities, such as Megala Kalyvia and Agios Nikolaos. The administrative jurisdiction falls under the Regional Unit of Trikala, within the Decentralized Administration of Thessaly and Central Greece.
When dialing a landline number in Trikala from within Greece, subscribers must use the full 10-digit national significant number (NSN), which includes the leading '2' of the area code followed by the subscriber number. The format is 2431 XXX XXX (where X represents a digit). For example, a local number might be 2431 234 567. It is important to note that the leading '0' trunk prefix is not part of the NSN and is only used for domestic calls. To call a Trikala number from abroad, international callers must dial the Greek country code +30, followed by the 10-digit NSN, omitting the trunk prefix. Thus, the international format becomes +30 2431 234 567.
Historically, the area code for Trikala was 24310 (five digits after the trunk prefix), but following the Greek numbering reform of 2001–2002, all geographic area codes were standardized to a three-digit prefix (starting with '2') and a seven-digit subscriber number, resulting in the current 10-digit dialing format. No overlay code has been assigned to Trikala; the 2431 code remains the sole geographic code for the region.
For local callers within Trikala, it is still necessary to dial the full 10-digit number, as Greece does not use local dialing without the area code. For callers from other parts of Greece, the same 10-digit number is used. Foreign callers should always use the international format, replacing the leading '0' with the +30 country code. Calls to 2431 numbers are typically routed over the PSTN, and depending on the subscriber's carrier, may also be delivered via VoIP or mobile networks, but the geographic tariff applies.
Businesses and residents in Trikala rely on this code for fixed-line services, and it is essential for anyone contacting local enterprises, public services, or private individuals to use the correct dialing format to ensure successful connection.