Area Code +44-55-(16550000...16559999) located in Corporate Numbers, more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 55 Subscriber Number From : 16550000 Subscriber Number To : 16559999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : D (D) 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) City : Corporate Numbers Timezone : Europe/London Coordinated Universal Time : +00:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 51.5000 Longitude : -0.1300 ‹ previous : +44-55-(16540000...16549999) next › : +44-55-(16570000...16579999) Dialling Instructions For trunk calls: 0 55 16550000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 55 16550000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 16550000 ~ 16559999 (Count: 10,000) Example: +44-55-16550000 / 0044-55-16550000 (055-16550000 / 0-55-16550000) +44-55-16550001 / 0044-55-16550001 (055-16550001 / 0-55-16550001) +44-55-16550002 / 0044-55-16550002 (055-16550002 / 0-55-16550002) +44-55-16550003 / 0044-55-16550003 (055-16550003 / 0-55-16550003) +44-55-16550004 / 0044-55-16550004 (055-16550004 / 0-55-16550004) ...+44-55-xxxxxxxx / 0044-55-xxxxxxxx (055-xxxxxxxx / 0-55-xxxxxxxx) ...+44-55-16559995 / 0044-55-16559995 (055-16559995 / 0-55-16559995) +44-55-16559996 / 0044-55-16559996 (055-16559996 / 0-55-16559996) +44-55-16559997 / 0044-55-16559997 (055-16559997 / 0-55-16559997) +44-55-16559998 / 0044-55-16559998 (055-16559998 / 0-55-16559998) +44-55-16559999 / 0044-55-16559999 (055-16559999 / 0-55-16559999)