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+44-121-(2830000...2839999): Birmingham, Birmingham (BIR) Read more about +44-121-(2830000...2839999)
+44-131-(5200000...5209999): Edinburgh, City of Edinburgh (EDH) Read more about +44-131-(5200000...5209999)
+44-161-(3720000...3729999): Manchester, Manchester (MAN) Read more about +44-161-(3720000...3729999)
+44-20-(02200000...02209999): London, City of London (LND) Read more about +44-20-(02200000...02209999)
+44-20-(30650000...30659999): London, City of London (LND) Read more about +44-20-(30650000...30659999)
+44-191-(4570000...4579999): Tyneside, South Tyneside (STY) Read more about +44-191-(4570000...4579999)
+44-23-(81700000...81709999): Southampton, Southampton (STH) Read more about +44-23-(81700000...81709999)