Area Code 4290 – Dundalk
The phone area code for Dundalk is 4290 (international format +3534290). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 4290
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Dundalk
Geographic Overview
The +353 4290 prefix is a geographic National Destination Code (NDC) assigned to the Dundalk area of County Louth, Ireland. Dundalk is the county town of Louth, located near the border with Northern Ireland, and serves as a key commercial and administrative hub for the northeast region. The prefix covers the town center and its immediate environs, including the surrounding townlands and nearby villages within the Dundalk urban area.
Dialing Formats
For callers within Ireland, the national dialing format is 042 90xxxxx, where '042' is the trunk prefix (0) followed by the NDC '42'. The local subscriber number begins with '90' and is followed by five additional digits, making a total of seven digits after the trunk prefix. For example, a local number might be 042 9051234.
For international callers, the format is +353 42 90xxxxx, dropping the leading '0' from the trunk prefix. Thus, the same number would be dialed as +353 42 9051234. This format adheres to ITU-T E.164 recommendations.
Geographic Allocation and Overlays
As a geographic code, the 4290 prefix is tied to the physical location of the subscriber's fixed-line service. However, with the advent of number portability, a number with this prefix may be routed to a VoIP or mobile service, but the number retains its geographic identity for regulatory and emergency services purposes. Currently, there is no overlay code for the Dundalk area; the 042 NDC is used exclusively for the region.
Caller Instructions
Local callers within Dundalk can often dial the seven-digit local number directly without the trunk prefix, depending on their service provider's configuration. However, for clarity and to avoid misdialing, it is recommended to always use the full national format 042 90xxxxx. Callers from other parts of Ireland must include the trunk prefix and NDC. International callers must use the country code +353 and drop the leading '0'.
Commercial and Administrative Relevance
The 4290 prefix is used by businesses, government offices, and residential customers in Dundalk. It is particularly relevant for companies operating in the retail, technology, and public service sectors. For businesses, having a local geographic number can enhance trust and local presence. For international partners, understanding the correct dialing format is essential for seamless communication.