Area Code +44-1707-(280000...289999) 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 : 280000 Subscriber Number To : 289999 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 : 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-(270000...279999) next › : +44-1707-(290000...299999) Dialling Instructions For trunk calls: 0 1707 280000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 1707 280000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 280000 ~ 289999 (Count: 10,000) Example: +44-1707-280000 / 0044-1707-280000 (01707-280000 / 0-1707-280000) +44-1707-280001 / 0044-1707-280001 (01707-280001 / 0-1707-280001) +44-1707-280002 / 0044-1707-280002 (01707-280002 / 0-1707-280002) +44-1707-280003 / 0044-1707-280003 (01707-280003 / 0-1707-280003) +44-1707-280004 / 0044-1707-280004 (01707-280004 / 0-1707-280004) ...+44-1707-xxxxxx / 0044-1707-xxxxxx (01707-xxxxxx / 0-1707-xxxxxx) ...+44-1707-289995 / 0044-1707-289995 (01707-289995 / 0-1707-289995) +44-1707-289996 / 0044-1707-289996 (01707-289996 / 0-1707-289996) +44-1707-289997 / 0044-1707-289997 (01707-289997 / 0-1707-289997) +44-1707-289998 / 0044-1707-289998 (01707-289998 / 0-1707-289998) +44-1707-289999 / 0044-1707-289999 (01707-289999 / 0-1707-289999)