Area Code +44-56-(03990000...03999999) located in VoIP, more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 56 Subscriber Number From : 03990000 Subscriber Number To : 03999999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : V (VoIP, Location Independent fixed land line) Carrier Name : Eclipse Tel 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 : VoIP 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 : +44-56-(03940000...03949999) next › : +44-70-(00000000...00099999) Dialling Instructions For trunk calls: 0 56 03990000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 56 03990000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 03990000 ~ 03999999 (Count: 10,000) Example: +44-56-03990000 / 0044-56-03990000 (056-03990000 / 0-56-03990000) +44-56-03990001 / 0044-56-03990001 (056-03990001 / 0-56-03990001) +44-56-03990002 / 0044-56-03990002 (056-03990002 / 0-56-03990002) +44-56-03990003 / 0044-56-03990003 (056-03990003 / 0-56-03990003) +44-56-03990004 / 0044-56-03990004 (056-03990004 / 0-56-03990004) ...+44-56-xxxxxxxx / 0044-56-xxxxxxxx (056-xxxxxxxx / 0-56-xxxxxxxx) ...+44-56-03999995 / 0044-56-03999995 (056-03999995 / 0-56-03999995) +44-56-03999996 / 0044-56-03999996 (056-03999996 / 0-56-03999996) +44-56-03999997 / 0044-56-03999997 (056-03999997 / 0-56-03999997) +44-56-03999998 / 0044-56-03999998 (056-03999998 / 0-56-03999998) +44-56-03999999 / 0044-56-03999999 (056-03999999 / 0-56-03999999)