Area Code +44-5555-(660000...669999) located in Corporate Numbers, more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 5555 Subscriber Number From : 660000 Subscriber Number To : 669999 National Destination Code Length : 4 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : S (Special) Carrier Name : Syntec UK 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) 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 : +44-5555-(560000...569999) next › : +44-5555-(840000...849999) Dialling Instructions For trunk calls: 0 5555 660000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 5555 660000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 660000 ~ 669999 (Count: 10,000) Example: +44-5555-660000 / 0044-5555-660000 (05555-660000 / 0-5555-660000) +44-5555-660001 / 0044-5555-660001 (05555-660001 / 0-5555-660001) +44-5555-660002 / 0044-5555-660002 (05555-660002 / 0-5555-660002) +44-5555-660003 / 0044-5555-660003 (05555-660003 / 0-5555-660003) +44-5555-660004 / 0044-5555-660004 (05555-660004 / 0-5555-660004) ...+44-5555-xxxxxx / 0044-5555-xxxxxx (05555-xxxxxx / 0-5555-xxxxxx) ...+44-5555-669995 / 0044-5555-669995 (05555-669995 / 0-5555-669995) +44-5555-669996 / 0044-5555-669996 (05555-669996 / 0-5555-669996) +44-5555-669997 / 0044-5555-669997 (05555-669997 / 0-5555-669997) +44-5555-669998 / 0044-5555-669998 (05555-669998 / 0-5555-669998) +44-5555-669999 / 0044-5555-669999 (05555-669999 / 0-5555-669999)