Area Code +44-121-(3120000...3129999) 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 : 3120000 Subscriber Number To : 3129999 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 : Aggregated Telecom 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 : 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-(3110000...3119999) next › : +44-121-(3130000...3139999) Dialling Instructions For trunk calls: 0 121 3120000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 121 3120000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3120000 ~ 3129999 (Count: 10,000) Example: +44-121-3120000 / 0044-121-3120000 (0121-3120000 / 0-121-3120000) +44-121-3120001 / 0044-121-3120001 (0121-3120001 / 0-121-3120001) +44-121-3120002 / 0044-121-3120002 (0121-3120002 / 0-121-3120002) +44-121-3120003 / 0044-121-3120003 (0121-3120003 / 0-121-3120003) +44-121-3120004 / 0044-121-3120004 (0121-3120004 / 0-121-3120004) ...+44-121-xxxxxxx / 0044-121-xxxxxxx (0121-xxxxxxx / 0-121-xxxxxxx) ...+44-121-3129995 / 0044-121-3129995 (0121-3129995 / 0-121-3129995) +44-121-3129996 / 0044-121-3129996 (0121-3129996 / 0-121-3129996) +44-121-3129997 / 0044-121-3129997 (0121-3129997 / 0-121-3129997) +44-121-3129998 / 0044-121-3129998 (0121-3129998 / 0-121-3129998) +44-121-3129999 / 0044-121-3129999 (0121-3129999 / 0-121-3129999)