Area Code 4291 – Dundalk
The phone area code for Dundalk is 4291 (international format +3534291). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 4291
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Dundalk
Geographic Overview
The +353 4291 prefix is a geographic National Destination Code (NDC) assigned to the Dundalk area in County Louth, Republic of Ireland. Dundalk, the county town of Louth, is located near the border with Northern Ireland, approximately 80 km north of Dublin. The code covers the town itself and its surrounding hinterland, including villages such as Blackrock, Haggardstown, and Jenkinstown. As part of the Irish national numbering plan, this prefix is used for fixed-line PSTN and VoIP services provided by operators such as Eir, Virgin Media, and various alternative carriers.
Dialing Formats
When calling a Dundalk number from within Ireland, subscribers must dial the national trunk prefix 0 followed by the NDC and the subscriber number. For example, a local number might be dialed as 042 91xxxxx (where xxxxx represents the five-digit local extension). From abroad, callers must use the international prefix (typically 00 or +) followed by the country code 353, the NDC without the leading zero, and the subscriber number: +353 42 91xxxxx. Note that the NDC is 42; the additional digits 91 are part of the subscriber number, not a separate prefix. Therefore, the full national significant number (NSN) is 9 digits long (e.g., 42 91xxxxx).
Geographic Coverage and Overlays
The 42 area code covers a broader region of County Louth and parts of County Meath, but the 4291 range specifically identifies the Dundalk exchange area. There are no overlay codes in this region; the 42 code is unique for the area. However, due to number portability, a number with the 4291 prefix may be routed to a different geographic location or even to a mobile or VoIP service, but the number retains its geographic identity.
Caller Instructions
- Local callers within Ireland: Dial 042 91xxxxx (including the trunk prefix 0).
- International callers: Dial your country's exit code (e.g., 00 from most European countries, 011 from the US/Canada), then 353 42 91xxxxx.
- Callers from Northern Ireland (UK): Can dial the international format +353 42 91xxxxx or, in some cases, the simplified dialing 048 42 91xxxxx may work, but the +353 format is always reliable.
For businesses, using a geographic number like +353 42 91xxxxx can enhance local trust and presence. For tourists or visitors, it is essential to use the international format when dialing from a mobile phone, as the leading 0 is not used after the +353 country code.