Area Code +44-20-(37010000...37019999) 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 : 37010000 Subscriber Number To : 37019999 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 : BT 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-(37000000...37009999) next › : +44-20-(37110000...37119999) Dialling Instructions For trunk calls: 0 20 37010000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 20 37010000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 37010000 ~ 37019999 (Count: 10,000) Example: +44-20-37010000 / 0044-20-37010000 (020-37010000 / 0-20-37010000) +44-20-37010001 / 0044-20-37010001 (020-37010001 / 0-20-37010001) +44-20-37010002 / 0044-20-37010002 (020-37010002 / 0-20-37010002) +44-20-37010003 / 0044-20-37010003 (020-37010003 / 0-20-37010003) +44-20-37010004 / 0044-20-37010004 (020-37010004 / 0-20-37010004) ...+44-20-xxxxxxxx / 0044-20-xxxxxxxx (020-xxxxxxxx / 0-20-xxxxxxxx) ...+44-20-37019995 / 0044-20-37019995 (020-37019995 / 0-20-37019995) +44-20-37019996 / 0044-20-37019996 (020-37019996 / 0-20-37019996) +44-20-37019997 / 0044-20-37019997 (020-37019997 / 0-20-37019997) +44-20-37019998 / 0044-20-37019998 (020-37019998 / 0-20-37019998) +44-20-37019999 / 0044-20-37019999 (020-37019999 / 0-20-37019999)
