Area Code +44-1245-(310000...319999) located in Chelmsford, Essex (ESS), more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 1245 Subscriber Number From : 310000 Subscriber Number To : 319999 National Destination Code Length : 4 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : BT Click here to buy United Kingdom Area Code Database Other Information Language Code : en (English) Country Number : 826 (United Kingdom) Country Code : GB (United Kingdom) Region Code : ESS Region Name : Essex City : Chelmsford Timezone : Europe/London Coordinated Universal Time : +00:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 51.7400 Longitude : 0.4700 ‹ previous : +44-1245-(300000...309999) next › : +44-1245-(320000...329999) Dialling Instructions For trunk calls: 0 1245 310000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 1245 310000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 310000 ~ 319999 (Count: 10,000) Example: +44-1245-310000 / 0044-1245-310000 (01245-310000 / 0-1245-310000) +44-1245-310001 / 0044-1245-310001 (01245-310001 / 0-1245-310001) +44-1245-310002 / 0044-1245-310002 (01245-310002 / 0-1245-310002) +44-1245-310003 / 0044-1245-310003 (01245-310003 / 0-1245-310003) +44-1245-310004 / 0044-1245-310004 (01245-310004 / 0-1245-310004) ...+44-1245-xxxxxx / 0044-1245-xxxxxx (01245-xxxxxx / 0-1245-xxxxxx) ...+44-1245-319995 / 0044-1245-319995 (01245-319995 / 0-1245-319995) +44-1245-319996 / 0044-1245-319996 (01245-319996 / 0-1245-319996) +44-1245-319997 / 0044-1245-319997 (01245-319997 / 0-1245-319997) +44-1245-319998 / 0044-1245-319998 (01245-319998 / 0-1245-319998) +44-1245-319999 / 0044-1245-319999 (01245-319999 / 0-1245-319999)