Area Code +44-1913-(230000...239999) located in Durham, Durham (DUR), more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 1913 Subscriber Number From : 230000 Subscriber Number To : 239999 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 : Aggregated Telecom Ltd 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 : DUR Region Name : Durham City : Durham Timezone : Europe/London Coordinated Universal Time : +00:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 54.7800 Longitude : -1.5700 ‹ previous : +44-1913-(220000...229999) next › : +44-1913-(240000...249999) Dialling Instructions For trunk calls: 0 1913 230000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 1913 230000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 230000 ~ 239999 (Count: 10,000) Example: +44-1913-230000 / 0044-1913-230000 (01913-230000 / 0-1913-230000) +44-1913-230001 / 0044-1913-230001 (01913-230001 / 0-1913-230001) +44-1913-230002 / 0044-1913-230002 (01913-230002 / 0-1913-230002) +44-1913-230003 / 0044-1913-230003 (01913-230003 / 0-1913-230003) +44-1913-230004 / 0044-1913-230004 (01913-230004 / 0-1913-230004) ...+44-1913-xxxxxx / 0044-1913-xxxxxx (01913-xxxxxx / 0-1913-xxxxxx) ...+44-1913-239995 / 0044-1913-239995 (01913-239995 / 0-1913-239995) +44-1913-239996 / 0044-1913-239996 (01913-239996 / 0-1913-239996) +44-1913-239997 / 0044-1913-239997 (01913-239997 / 0-1913-239997) +44-1913-239998 / 0044-1913-239998 (01913-239998 / 0-1913-239998) +44-1913-239999 / 0044-1913-239999 (01913-239999 / 0-1913-239999)