Area Code +44-300-(0010000...0019999) 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 : 0010000 Subscriber Number To : 0019999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : N (N) Carrier Name : Hello Telecom (UK) PLC 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-(0000000...0009999) next › : +44-300-(0020000...0029999) Dialling Instructions For trunk calls: 0 300 0010000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 300 0010000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 0010000 ~ 0019999 (Count: 10,000) Example: +44-300-0010000 / 0044-300-0010000 (0300-0010000 / 0-300-0010000) +44-300-0010001 / 0044-300-0010001 (0300-0010001 / 0-300-0010001) +44-300-0010002 / 0044-300-0010002 (0300-0010002 / 0-300-0010002) +44-300-0010003 / 0044-300-0010003 (0300-0010003 / 0-300-0010003) +44-300-0010004 / 0044-300-0010004 (0300-0010004 / 0-300-0010004) ...+44-300-xxxxxxx / 0044-300-xxxxxxx (0300-xxxxxxx / 0-300-xxxxxxx) ...+44-300-0019995 / 0044-300-0019995 (0300-0019995 / 0-300-0019995) +44-300-0019996 / 0044-300-0019996 (0300-0019996 / 0-300-0019996) +44-300-0019997 / 0044-300-0019997 (0300-0019997 / 0-300-0019997) +44-300-0019998 / 0044-300-0019998 (0300-0019998 / 0-300-0019998) +44-300-0019999 / 0044-300-0019999 (0300-0019999 / 0-300-0019999)