Area Code +44-1603-(525000...525999) located in Norwich, Norfolk (NFK), more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 1603 Subscriber Number From : 525000 Subscriber Number To : 525999 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 : Citrus Telecommunications 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 : NFK Region Name : Norfolk City : Norwich Timezone : Europe/London Coordinated Universal Time : +00:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 52.6300 Longitude : 1.3000 ‹ previous : +44-1603-(524000...524999) next › : +44-1603-(527000...527999) Dialling Instructions For trunk calls: 0 1603 525000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 1603 525000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 525000 ~ 525999 (Count: 1,000) Example: +44-1603-525000 / 0044-1603-525000 (01603-525000 / 0-1603-525000) +44-1603-525001 / 0044-1603-525001 (01603-525001 / 0-1603-525001) +44-1603-525002 / 0044-1603-525002 (01603-525002 / 0-1603-525002) +44-1603-525003 / 0044-1603-525003 (01603-525003 / 0-1603-525003) +44-1603-525004 / 0044-1603-525004 (01603-525004 / 0-1603-525004) ...+44-1603-xxxxxx / 0044-1603-xxxxxx (01603-xxxxxx / 0-1603-xxxxxx) ...+44-1603-525995 / 0044-1603-525995 (01603-525995 / 0-1603-525995) +44-1603-525996 / 0044-1603-525996 (01603-525996 / 0-1603-525996) +44-1603-525997 / 0044-1603-525997 (01603-525997 / 0-1603-525997) +44-1603-525998 / 0044-1603-525998 (01603-525998 / 0-1603-525998) +44-1603-525999 / 0044-1603-525999 (01603-525999 / 0-1603-525999)