Area Code +44-1707-(521000...521999) 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 : 521000 Subscriber Number To : 521999 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 : Barritec 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-(520000...520999) next › : +44-1707-(522000...522999) Dialling Instructions For trunk calls: 0 1707 521000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 1707 521000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 521000 ~ 521999 (Count: 1,000) Example: +44-1707-521000 / 0044-1707-521000 (01707-521000 / 0-1707-521000) +44-1707-521001 / 0044-1707-521001 (01707-521001 / 0-1707-521001) +44-1707-521002 / 0044-1707-521002 (01707-521002 / 0-1707-521002) +44-1707-521003 / 0044-1707-521003 (01707-521003 / 0-1707-521003) +44-1707-521004 / 0044-1707-521004 (01707-521004 / 0-1707-521004) ...+44-1707-xxxxxx / 0044-1707-xxxxxx (01707-xxxxxx / 0-1707-xxxxxx) ...+44-1707-521995 / 0044-1707-521995 (01707-521995 / 0-1707-521995) +44-1707-521996 / 0044-1707-521996 (01707-521996 / 0-1707-521996) +44-1707-521997 / 0044-1707-521997 (01707-521997 / 0-1707-521997) +44-1707-521998 / 0044-1707-521998 (01707-521998 / 0-1707-521998) +44-1707-521999 / 0044-1707-521999 (01707-521999 / 0-1707-521999)