Area Code +44-20-(30640000...30649999) located in London, City of London (LND), more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 20 Subscriber Number From : 30640000 Subscriber Number To : 30649999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : Voicetec Systems 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 : LND Region Name : City of London City : London Timezone : Europe/London Coordinated Universal Time : +00:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 51.5100 Longitude : -0.1300 ‹ previous : +44-20-(30630000...30639999) next › : +44-20-(30650000...30659999) Dialling Instructions For trunk calls: 0 20 30640000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 20 30640000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 30640000 ~ 30649999 (Count: 10,000) Example: +44-20-30640000 / 0044-20-30640000 (020-30640000 / 0-20-30640000) +44-20-30640001 / 0044-20-30640001 (020-30640001 / 0-20-30640001) +44-20-30640002 / 0044-20-30640002 (020-30640002 / 0-20-30640002) +44-20-30640003 / 0044-20-30640003 (020-30640003 / 0-20-30640003) +44-20-30640004 / 0044-20-30640004 (020-30640004 / 0-20-30640004) ...+44-20-xxxxxxxx / 0044-20-xxxxxxxx (020-xxxxxxxx / 0-20-xxxxxxxx) ...+44-20-30649995 / 0044-20-30649995 (020-30649995 / 0-20-30649995) +44-20-30649996 / 0044-20-30649996 (020-30649996 / 0-20-30649996) +44-20-30649997 / 0044-20-30649997 (020-30649997 / 0-20-30649997) +44-20-30649998 / 0044-20-30649998 (020-30649998 / 0-20-30649998) +44-20-30649999 / 0044-20-30649999 (020-30649999 / 0-20-30649999)