Area Code +44-1707-(523000...523999) located in Welwyn Garden City, Hertfordshire (HRT), more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 1707 Subscriber Number From : 523000 Subscriber Number To : 523999 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 : 3C Limited 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 : HRT Region Name : Hertfordshire City : Welwyn Garden City Timezone : Europe/London Coordinated Universal Time : +00:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 51.8000 Longitude : -0.2100 ‹ previous : +44-1707-(522000...522999) next › : +44-1707-(524000...524999) Dialling Instructions For trunk calls: 0 1707 523000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 1707 523000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 523000 ~ 523999 (Count: 1,000) Example: +44-1707-523000 / 0044-1707-523000 (01707-523000 / 0-1707-523000) +44-1707-523001 / 0044-1707-523001 (01707-523001 / 0-1707-523001) +44-1707-523002 / 0044-1707-523002 (01707-523002 / 0-1707-523002) +44-1707-523003 / 0044-1707-523003 (01707-523003 / 0-1707-523003) +44-1707-523004 / 0044-1707-523004 (01707-523004 / 0-1707-523004) ...+44-1707-xxxxxx / 0044-1707-xxxxxx (01707-xxxxxx / 0-1707-xxxxxx) ...+44-1707-523995 / 0044-1707-523995 (01707-523995 / 0-1707-523995) +44-1707-523996 / 0044-1707-523996 (01707-523996 / 0-1707-523996) +44-1707-523997 / 0044-1707-523997 (01707-523997 / 0-1707-523997) +44-1707-523998 / 0044-1707-523998 (01707-523998 / 0-1707-523998) +44-1707-523999 / 0044-1707-523999 (01707-523999 / 0-1707-523999)