Area Code +44-300-(6660000...6669999) located in National Number, more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 300 Subscriber Number From : 6660000 Subscriber Number To : 6669999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : N (N) Carrier Name : Floren Limited 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 : National Number 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 : +44-300-(6600000...6609999) next › : +44-300-(6780000...6789999) Dialling Instructions For trunk calls: 0 300 6660000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 300 6660000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6660000 ~ 6669999 (Count: 10,000) Example: +44-300-6660000 / 0044-300-6660000 (0300-6660000 / 0-300-6660000) +44-300-6660001 / 0044-300-6660001 (0300-6660001 / 0-300-6660001) +44-300-6660002 / 0044-300-6660002 (0300-6660002 / 0-300-6660002) +44-300-6660003 / 0044-300-6660003 (0300-6660003 / 0-300-6660003) +44-300-6660004 / 0044-300-6660004 (0300-6660004 / 0-300-6660004) ...+44-300-xxxxxxx / 0044-300-xxxxxxx (0300-xxxxxxx / 0-300-xxxxxxx) ...+44-300-6669995 / 0044-300-6669995 (0300-6669995 / 0-300-6669995) +44-300-6669996 / 0044-300-6669996 (0300-6669996 / 0-300-6669996) +44-300-6669997 / 0044-300-6669997 (0300-6669997 / 0-300-6669997) +44-300-6669998 / 0044-300-6669998 (0300-6669998 / 0-300-6669998) +44-300-6669999 / 0044-300-6669999 (0300-6669999 / 0-300-6669999)