When the telphone code for Northern Ireland was changed to 028, the digits added were chosen to give some indication of the geographic
location of the number. The areas were based on counties but with the addition of Belfast and a couple of rather odd modifications.
The whole of both shores of Belfast Lough to Whitehead on the north shore and Bangor on the south was included in the Belfast area.
Newry, in south Down, was included in Armagh.
Kilrea, in County Londonderry, was included with Antrim.
Antrim itself was included with Belfast. This last is possibly associated with maintaining the fiction that Belfast
International Airport is somewhere near Belfast.
|Area||Code||Town / City|
|Antrim (excluding Antrim!)|
|Armagh (and Newry)|
|Down (excluding Newry and Bangor to Holywood areas)|
|028 90||Belfast City|