Area Code +44-121-(4180000...4189999) located in Birmingham, Birmingham (BIR), more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 121 Subscriber Number From : 4180000 Subscriber Number To : 4189999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : Calltracks 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 : BIR Region Name : Birmingham City : Birmingham Timezone : Europe/London Coordinated Universal Time : +00:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 52.4800 Longitude : -1.8900 ‹ previous : +44-121-(4160000...4169999) next › : +44-121-(4190000...4199999) Dialling Instructions For trunk calls: 0 121 4180000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 121 4180000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4180000 ~ 4189999 (Count: 10,000) Example: +44-121-4180000 / 0044-121-4180000 (0121-4180000 / 0-121-4180000) +44-121-4180001 / 0044-121-4180001 (0121-4180001 / 0-121-4180001) +44-121-4180002 / 0044-121-4180002 (0121-4180002 / 0-121-4180002) +44-121-4180003 / 0044-121-4180003 (0121-4180003 / 0-121-4180003) +44-121-4180004 / 0044-121-4180004 (0121-4180004 / 0-121-4180004) ...+44-121-xxxxxxx / 0044-121-xxxxxxx (0121-xxxxxxx / 0-121-xxxxxxx) ...+44-121-4189995 / 0044-121-4189995 (0121-4189995 / 0-121-4189995) +44-121-4189996 / 0044-121-4189996 (0121-4189996 / 0-121-4189996) +44-121-4189997 / 0044-121-4189997 (0121-4189997 / 0-121-4189997) +44-121-4189998 / 0044-121-4189998 (0121-4189998 / 0-121-4189998) +44-121-4189999 / 0044-121-4189999 (0121-4189999 / 0-121-4189999)