Area Code +44-300-(0000000...0009999) 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 : 0000000 Subscriber Number To : 0009999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : N (N) Carrier Name : TelNG 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 : +44-29-(22600000...22609999) next › : +44-300-(0010000...0019999) Dialling Instructions For trunk calls: 0 300 0000000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 300 0000000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 0000000 ~ 0009999 (Count: 10,000) Example: +44-300-0000000 / 0044-300-0000000 (0300-0000000 / 0-300-0000000) +44-300-0000001 / 0044-300-0000001 (0300-0000001 / 0-300-0000001) +44-300-0000002 / 0044-300-0000002 (0300-0000002 / 0-300-0000002) +44-300-0000003 / 0044-300-0000003 (0300-0000003 / 0-300-0000003) +44-300-0000004 / 0044-300-0000004 (0300-0000004 / 0-300-0000004) ...+44-300-xxxxxxx / 0044-300-xxxxxxx (0300-xxxxxxx / 0-300-xxxxxxx) ...+44-300-0009995 / 0044-300-0009995 (0300-0009995 / 0-300-0009995) +44-300-0009996 / 0044-300-0009996 (0300-0009996 / 0-300-0009996) +44-300-0009997 / 0044-300-0009997 (0300-0009997 / 0-300-0009997) +44-300-0009998 / 0044-300-0009998 (0300-0009998 / 0-300-0009998) +44-300-0009999 / 0044-300-0009999 (0300-0009999 / 0-300-0009999)