Area Code 7491 – Letterkenny
The phone area code for Letterkenny is 7491 (international format +3537491). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 7491
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Letterkenny
Geographic Context and Coverage
The +353 7491 prefix is a geographic National Destination Code (NDC) assigned to the Letterkenny telephone exchange area in County Donegal, Ireland. Letterkenny, the largest town in County Donegal, serves as the primary commercial and administrative hub for the northwest region. The code covers Letterkenny town and its immediate hinterland, including surrounding areas such as Oldtown, Glencar, and Ballymacool. Subscribers within this area are allocated numbers in the format +353 74 91xxxxx, where the full international number comprises the country code (353), the NDC (74), the exchange code (91), and a five-digit subscriber number. Note that the NDC for the wider Letterkenny area is 74, with 91 serving as an additional routing layer for specific exchanges.
Dialing Formats and Instructions
For callers within Ireland, the national dialing format is 074 91xxxxx, where the leading '0' is the trunk prefix. For international callers, the format is +353 74 91xxxxx (or 00353 74 91xxxxx from countries using the international prefix 00). When dialing locally within the Letterkenny area, the full national number (including the 074 prefix) is still required, as Ireland has adopted closed dialing for geographic numbers. This means that even for calls between two subscribers in the same exchange, the entire 074 91 number must be dialed.
Regulatory and Technical Considerations
Geographic numbers in Ireland are regulated by ComReg, the national regulatory authority. The 7491 prefix is part of the National Numbering Scheme and is allocated to fixed-line services, typically provided by operators such as Eir, Virgin Media, and various fixed wireless access providers. These numbers are primarily used for PSTN and VoIP services, and they are not portable to mobile networks. However, number portability is available between fixed-line operators, allowing subscribers to retain their 074 91 number when switching providers. The geographic nature of the code means that calls to these numbers are charged based on the caller's location and tariff plan, with rates typically lower than calls to mobile or non-geographic numbers.
Practical Examples
- To call a Letterkenny number from the United States, dial: 011 353 74 91xxxxx.
- To call from the United Kingdom, dial: 00 353 74 91xxxxx.
- To call from within Ireland (e.g., from Dublin), dial: 074 91xxxxx.
Businesses and residents in the Letterkenny area often use these numbers for local presence, and international callers should be aware of the time zone (GMT/IST) when placing calls. For further assistance, contact your telecom provider for accurate call rates and connectivity.