This year (yet again) British Telecom and OFTEL found it necessary to change the area codes for some of the UKs biggest cities, and those of Northern Ireland.

For your easy reference, the Northern Ireland changes are listed below, in order of county.

Antrim

Area        Old Code  New Code
Ballycastle 012657    028 207X XXXX   
Martinstown 012667    028 217X XXXX   
Ballymena    01266    028 256X XXXX   
Ballymena    01266    028 25XX XXXX   
Ballymoney  012656    028 276X XXXX   
Larne        01574    028 28XX XXXX  
Kilrea      012665    028 295X XXXX 

Armagh

Area        Old Code  New Code
Newry       01693     028 302X XXXX   
Newry       01693     028 30XX XXXX   
Armagh      01861     028 37XX XXXX   
Portadown   01762     028 38XX XXXX

Down

Area        Old Code  New Code
Banbridge   018206    028 406X XXXX   
Rostrevor   016937    028 417X XXXX   
Kircubbin   012477    028 427X XXXX   
Newcastle   013967    028 437X XXXX   
Downpatrick  01396    028 44XX XXXX 

Fermanagh

Area        Old Code  New Code
Enniskillen   01365   028 66XX XXXX   
Lisnaskea    013657   028 677X XXXX   
Kesh         013656   028 686X XXXX 

Londonderry

Area        Old Code  New Code
Coleraine     01265   028 703X XXXX   
Coleraine     01265   028 70XX XXXX   
Londonderry   01504   028 71XX XXXX   
Limavady     015047   028 777X XXXX   
Magherafelt   01648   028 796X XXXX   
Magherafelt   01648   028 79XX XXXX 

Tryone

Area           Old Code  New Code
Carrickmore     016627   028 807X XXXX   
Newtownstewart  016626   028 816X XXXX   
Omagh            01662   028 82XX XXXX   
Ballygawley     016625   028 855X XXXX   
Cookstown       016487   028 867X XXXX   
Dungannon        01868   028 87XX XXXX  
Fivemiletown    013655   028 895X XXXX 

Belfast district

District     Old Code  New Code
Belfast       01232    028 90XX XXXX   
Bangor        01247    028 91XX XXXX   
Lisburn       01846    028 92XX XXXX   
Ballyclare    01960    028 93XX XXXX   
Antrim        01849    028 94XX XXXX   
Saintfield    01238    028 97XX XXXX 

Please see UK Area Code Changes for information on the new city codes.