Area Code +44-300-(0370000...0379999) 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 : 0370000 Subscriber Number To : 0379999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : N (N) Carrier Name : Performance Telecom 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-(0360000...0369999) next › : +44-300-(0390000...0399999) Dialling Instructions For trunk calls: 0 300 0370000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 300 0370000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 0370000 ~ 0379999 (Count: 10,000) Example: +44-300-0370000 / 0044-300-0370000 (0300-0370000 / 0-300-0370000) +44-300-0370001 / 0044-300-0370001 (0300-0370001 / 0-300-0370001) +44-300-0370002 / 0044-300-0370002 (0300-0370002 / 0-300-0370002) +44-300-0370003 / 0044-300-0370003 (0300-0370003 / 0-300-0370003) +44-300-0370004 / 0044-300-0370004 (0300-0370004 / 0-300-0370004) ...+44-300-xxxxxxx / 0044-300-xxxxxxx (0300-xxxxxxx / 0-300-xxxxxxx) ...+44-300-0379995 / 0044-300-0379995 (0300-0379995 / 0-300-0379995) +44-300-0379996 / 0044-300-0379996 (0300-0379996 / 0-300-0379996) +44-300-0379997 / 0044-300-0379997 (0300-0379997 / 0-300-0379997) +44-300-0379998 / 0044-300-0379998 (0300-0379998 / 0-300-0379998) +44-300-0379999 / 0044-300-0379999 (0300-0379999 / 0-300-0379999)