Area Code +44-20-(37250000...37259999) 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 : 37250000 Subscriber Number To : 37259999 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 : Gamma Telecom Holdings 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-(37110000...37119999) next › : +44-20-(37300000...37309999) Dialling Instructions For trunk calls: 0 20 37250000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 20 37250000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 37250000 ~ 37259999 (Count: 10,000) Example: +44-20-37250000 / 0044-20-37250000 (020-37250000 / 0-20-37250000) +44-20-37250001 / 0044-20-37250001 (020-37250001 / 0-20-37250001) +44-20-37250002 / 0044-20-37250002 (020-37250002 / 0-20-37250002) +44-20-37250003 / 0044-20-37250003 (020-37250003 / 0-20-37250003) +44-20-37250004 / 0044-20-37250004 (020-37250004 / 0-20-37250004) ...+44-20-xxxxxxxx / 0044-20-xxxxxxxx (020-xxxxxxxx / 0-20-xxxxxxxx) ...+44-20-37259995 / 0044-20-37259995 (020-37259995 / 0-20-37259995) +44-20-37259996 / 0044-20-37259996 (020-37259996 / 0-20-37259996) +44-20-37259997 / 0044-20-37259997 (020-37259997 / 0-20-37259997) +44-20-37259998 / 0044-20-37259998 (020-37259998 / 0-20-37259998) +44-20-37259999 / 0044-20-37259999 (020-37259999 / 0-20-37259999)