Area Code +44-121-(4390000...4399999) 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 : 4390000 Subscriber Number To : 4399999 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 : TalkTalk Communications 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-(4380000...4389999) next › : +44-121-(4400000...4409999) Dialling Instructions For trunk calls: 0 121 4390000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 121 4390000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4390000 ~ 4399999 (Count: 10,000) Example: +44-121-4390000 / 0044-121-4390000 (0121-4390000 / 0-121-4390000) +44-121-4390001 / 0044-121-4390001 (0121-4390001 / 0-121-4390001) +44-121-4390002 / 0044-121-4390002 (0121-4390002 / 0-121-4390002) +44-121-4390003 / 0044-121-4390003 (0121-4390003 / 0-121-4390003) +44-121-4390004 / 0044-121-4390004 (0121-4390004 / 0-121-4390004) ...+44-121-xxxxxxx / 0044-121-xxxxxxx (0121-xxxxxxx / 0-121-xxxxxxx) ...+44-121-4399995 / 0044-121-4399995 (0121-4399995 / 0-121-4399995) +44-121-4399996 / 0044-121-4399996 (0121-4399996 / 0-121-4399996) +44-121-4399997 / 0044-121-4399997 (0121-4399997 / 0-121-4399997) +44-121-4399998 / 0044-121-4399998 (0121-4399998 / 0-121-4399998) +44-121-4399999 / 0044-121-4399999 (0121-4399999 / 0-121-4399999)