+44-1604-(287000...287999): Northampton, Northamptonshire (NTH) Read more about +44-1604-(287000...287999)
+44-161-(8160000...8169999): Manchester, Manchester (MAN) Read more about +44-161-(8160000...8169999)
+44-1628-(915000...915999): Maidenhead, Windsor and Maidenhead (WNM) Read more about +44-1628-(915000...915999)
+44-1707-(522000...522999): Welwyn Garden City, Hertfordshire (HRT) Read more about +44-1707-(522000...522999)
+44-1727-(531000...531999): St Albans, Hertfordshire (HRT) Read more about +44-1727-(531000...531999)
+44-1738-(215000...215999): Perth, Perth and Kinross (PKN) Read more about +44-1738-(215000...215999)
+44-1764-(320000...329999): Crieff, Perth and Kinross (PKN) Read more about +44-1764-(320000...329999)