Area Code +44-20-(81610000...81619999) 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 : 81610000 Subscriber Number To : 81619999 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 : Fuse 2.0 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-(81550000...81559999) next › : +44-20-(81680000...81689999) Dialling Instructions For trunk calls: 0 20 81610000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 20 81610000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 81610000 ~ 81619999 (Count: 10,000) Example: +44-20-81610000 / 0044-20-81610000 (020-81610000 / 0-20-81610000) +44-20-81610001 / 0044-20-81610001 (020-81610001 / 0-20-81610001) +44-20-81610002 / 0044-20-81610002 (020-81610002 / 0-20-81610002) +44-20-81610003 / 0044-20-81610003 (020-81610003 / 0-20-81610003) +44-20-81610004 / 0044-20-81610004 (020-81610004 / 0-20-81610004) ...+44-20-xxxxxxxx / 0044-20-xxxxxxxx (020-xxxxxxxx / 0-20-xxxxxxxx) ...+44-20-81619995 / 0044-20-81619995 (020-81619995 / 0-20-81619995) +44-20-81619996 / 0044-20-81619996 (020-81619996 / 0-20-81619996) +44-20-81619997 / 0044-20-81619997 (020-81619997 / 0-20-81619997) +44-20-81619998 / 0044-20-81619998 (020-81619998 / 0-20-81619998) +44-20-81619999 / 0044-20-81619999 (020-81619999 / 0-20-81619999)