Area Code +44-1777-(230000...230999) located in Retford, Northamptonshire (NTH), more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 1777 Subscriber Number From : 230000 Subscriber Number To : 230999 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 : Linear Telecoms 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 : NTH Region Name : Northamptonshire City : Retford Timezone : Europe/London Coordinated Universal Time : +00:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 53.3200 Longitude : -0.9400 ‹ previous : +44-1777-(220000...229999) next › : +44-1777-(231000...231999) Dialling Instructions For trunk calls: 0 1777 230000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 1777 230000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 230000 ~ 230999 (Count: 1,000) Example: +44-1777-230000 / 0044-1777-230000 (01777-230000 / 0-1777-230000) +44-1777-230001 / 0044-1777-230001 (01777-230001 / 0-1777-230001) +44-1777-230002 / 0044-1777-230002 (01777-230002 / 0-1777-230002) +44-1777-230003 / 0044-1777-230003 (01777-230003 / 0-1777-230003) +44-1777-230004 / 0044-1777-230004 (01777-230004 / 0-1777-230004) ...+44-1777-xxxxxx / 0044-1777-xxxxxx (01777-xxxxxx / 0-1777-xxxxxx) ...+44-1777-230995 / 0044-1777-230995 (01777-230995 / 0-1777-230995) +44-1777-230996 / 0044-1777-230996 (01777-230996 / 0-1777-230996) +44-1777-230997 / 0044-1777-230997 (01777-230997 / 0-1777-230997) +44-1777-230998 / 0044-1777-230998 (01777-230998 / 0-1777-230998) +44-1777-230999 / 0044-1777-230999 (01777-230999 / 0-1777-230999)