Area Code +44-55-(11430000...11439999) 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 : 11430000 Subscriber Number To : 11439999 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-(11400000...11409999) next › : +44-55-(11440000...11449999) Dialling Instructions For trunk calls: 0 55 11430000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 55 11430000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 11430000 ~ 11439999 (Count: 10,000) Example: +44-55-11430000 / 0044-55-11430000 (055-11430000 / 0-55-11430000) +44-55-11430001 / 0044-55-11430001 (055-11430001 / 0-55-11430001) +44-55-11430002 / 0044-55-11430002 (055-11430002 / 0-55-11430002) +44-55-11430003 / 0044-55-11430003 (055-11430003 / 0-55-11430003) +44-55-11430004 / 0044-55-11430004 (055-11430004 / 0-55-11430004) ...+44-55-xxxxxxxx / 0044-55-xxxxxxxx (055-xxxxxxxx / 0-55-xxxxxxxx) ...+44-55-11439995 / 0044-55-11439995 (055-11439995 / 0-55-11439995) +44-55-11439996 / 0044-55-11439996 (055-11439996 / 0-55-11439996) +44-55-11439997 / 0044-55-11439997 (055-11439997 / 0-55-11439997) +44-55-11439998 / 0044-55-11439998 (055-11439998 / 0-55-11439998) +44-55-11439999 / 0044-55-11439999 (055-11439999 / 0-55-11439999)