Area Code +44-121-(3680000...3689999) 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 : 3680000 Subscriber Number To : 3689999 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 : Voxbone SA 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-(3670000...3679999) next › : +44-121-(3690000...3699999) Dialling Instructions For trunk calls: 0 121 3680000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 121 3680000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3680000 ~ 3689999 (Count: 10,000) Example: +44-121-3680000 / 0044-121-3680000 (0121-3680000 / 0-121-3680000) +44-121-3680001 / 0044-121-3680001 (0121-3680001 / 0-121-3680001) +44-121-3680002 / 0044-121-3680002 (0121-3680002 / 0-121-3680002) +44-121-3680003 / 0044-121-3680003 (0121-3680003 / 0-121-3680003) +44-121-3680004 / 0044-121-3680004 (0121-3680004 / 0-121-3680004) ...+44-121-xxxxxxx / 0044-121-xxxxxxx (0121-xxxxxxx / 0-121-xxxxxxx) ...+44-121-3689995 / 0044-121-3689995 (0121-3689995 / 0-121-3689995) +44-121-3689996 / 0044-121-3689996 (0121-3689996 / 0-121-3689996) +44-121-3689997 / 0044-121-3689997 (0121-3689997 / 0-121-3689997) +44-121-3689998 / 0044-121-3689998 (0121-3689998 / 0-121-3689998) +44-121-3689999 / 0044-121-3689999 (0121-3689999 / 0-121-3689999)