Area Code +44-5511-(430000...439999) located in Corporate Numbers, more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 5511 Subscriber Number From : 430000 Subscriber Number To : 439999 National Destination Code Length : 4 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : S (Special) 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 : 51.5100 Longitude : -0.1300 ‹ previous : +44-5511-(400000...409999) next › : +44-5511-(440000...449999) Dialling Instructions For trunk calls: 0 5511 430000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 5511 430000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 430000 ~ 439999 (Count: 10,000) Example: +44-5511-430000 / 0044-5511-430000 (05511-430000 / 0-5511-430000) +44-5511-430001 / 0044-5511-430001 (05511-430001 / 0-5511-430001) +44-5511-430002 / 0044-5511-430002 (05511-430002 / 0-5511-430002) +44-5511-430003 / 0044-5511-430003 (05511-430003 / 0-5511-430003) +44-5511-430004 / 0044-5511-430004 (05511-430004 / 0-5511-430004) ...+44-5511-xxxxxx / 0044-5511-xxxxxx (05511-xxxxxx / 0-5511-xxxxxx) ...+44-5511-439995 / 0044-5511-439995 (05511-439995 / 0-5511-439995) +44-5511-439996 / 0044-5511-439996 (05511-439996 / 0-5511-439996) +44-5511-439997 / 0044-5511-439997 (05511-439997 / 0-5511-439997) +44-5511-439998 / 0044-5511-439998 (05511-439998 / 0-5511-439998) +44-5511-439999 / 0044-5511-439999 (05511-439999 / 0-5511-439999)