Area Code +44-20-(30410000...30419999) 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 : 30410000 Subscriber Number To : 30419999 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 : 4D Interactive 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-(30400000...30409999) next › : +44-20-(30420000...30429999) Dialling Instructions For trunk calls: 0 20 30410000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 20 30410000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 30410000 ~ 30419999 (Count: 10,000) Example: +44-20-30410000 / 0044-20-30410000 (020-30410000 / 0-20-30410000) +44-20-30410001 / 0044-20-30410001 (020-30410001 / 0-20-30410001) +44-20-30410002 / 0044-20-30410002 (020-30410002 / 0-20-30410002) +44-20-30410003 / 0044-20-30410003 (020-30410003 / 0-20-30410003) +44-20-30410004 / 0044-20-30410004 (020-30410004 / 0-20-30410004) ...+44-20-xxxxxxxx / 0044-20-xxxxxxxx (020-xxxxxxxx / 0-20-xxxxxxxx) ...+44-20-30419995 / 0044-20-30419995 (020-30419995 / 0-20-30419995) +44-20-30419996 / 0044-20-30419996 (020-30419996 / 0-20-30419996) +44-20-30419997 / 0044-20-30419997 (020-30419997 / 0-20-30419997) +44-20-30419998 / 0044-20-30419998 (020-30419998 / 0-20-30419998) +44-20-30419999 / 0044-20-30419999 (020-30419999 / 0-20-30419999)