Area Code 426 – Dundalk
The phone area code for Dundalk is 426 (international format +353426). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 426
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Dundalk
Geographic Coverage and Administration
The +353 426 area code is a geographic National Destination Code (NDC) assigned to the town of Dundalk and its surrounding areas in County Louth, Ireland. This code is part of the national numbering plan administered by ComReg, the Commission for Communications Regulation. The area served includes Dundalk town centre, Blackrock, Carlingford, and the northern parts of County Louth, extending towards the border with Northern Ireland. The code is used for fixed-line PSTN and VoIP services, with local numbers typically having a total length of 7 digits after the NDC (e.g., 42 6XX XXXX).
Dialing Formats
When calling a landline in Dundalk from within Ireland, subscribers must dial the national trunk prefix '0' followed by the area code and the local number: 042 6XX XXXX. For international callers, the format is +353 42 6XX XXXX (drop the leading '0'). It is important to note that the area code is often written as 042 in national format, but the international format omits the trunk prefix. For example, a local number might be 042 612 3456; from abroad, you would dial +353 42 612 3456.
Overlay and Numbering Changes
As of the latest ComReg updates, the 042 area code does not have an overlay code. However, due to the increasing demand for telephony services, ComReg has implemented a strategy of number conservation and may introduce overlays in the future. Subscribers in Dundalk should be aware that local dialing (within the same area code) typically requires only the 7-digit local number, but if an overlay is introduced, 10-digit dialing may become mandatory. For now, callers from other parts of Ireland must always include the area code.
Caller Instructions
Local callers (within the 042 area) can dial the 7-digit local number directly. National callers from other Irish area codes must dial 042 followed by the local number. International callers should use the +353 country code, then 42 (without the leading 0), and then the local number. For example, to call a business in Dundalk from the United States, you would dial 011 353 42 6XX XXXX. Always verify the number length, as some numbers may have been migrated to VoIP services, but the geographic significance remains.