Area Code +44-300-(0040000...0049999) 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 : 0040000 Subscriber Number To : 0049999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : N (N) Carrier Name : TalkTalk Communications 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-(0030000...0039999) next › : +44-300-(0050000...0059999) Dialling Instructions For trunk calls: 0 300 0040000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 300 0040000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 0040000 ~ 0049999 (Count: 10,000) Example: +44-300-0040000 / 0044-300-0040000 (0300-0040000 / 0-300-0040000) +44-300-0040001 / 0044-300-0040001 (0300-0040001 / 0-300-0040001) +44-300-0040002 / 0044-300-0040002 (0300-0040002 / 0-300-0040002) +44-300-0040003 / 0044-300-0040003 (0300-0040003 / 0-300-0040003) +44-300-0040004 / 0044-300-0040004 (0300-0040004 / 0-300-0040004) ...+44-300-xxxxxxx / 0044-300-xxxxxxx (0300-xxxxxxx / 0-300-xxxxxxx) ...+44-300-0049995 / 0044-300-0049995 (0300-0049995 / 0-300-0049995) +44-300-0049996 / 0044-300-0049996 (0300-0049996 / 0-300-0049996) +44-300-0049997 / 0044-300-0049997 (0300-0049997 / 0-300-0049997) +44-300-0049998 / 0044-300-0049998 (0300-0049998 / 0-300-0049998) +44-300-0049999 / 0044-300-0049999 (0300-0049999 / 0-300-0049999)