Area Code +44-5600-(990000...999999) located in VoIP, more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 5600 Subscriber Number From : 990000 Subscriber Number To : 999999 National Destination Code Length : 4 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : V (VoIP, Location Independent fixed land line) Carrier Name : Gamma Telecom Holdings Ltd 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 : 51.5100 Longitude : -0.1300 ‹ previous : +44-5600-(980000...989999) next › : +44-5601-(000000...009999) Dialling Instructions For trunk calls: 0 5600 990000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 5600 990000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 990000 ~ 999999 (Count: 10,000) Example: +44-5600-990000 / 0044-5600-990000 (05600-990000 / 0-5600-990000) +44-5600-990001 / 0044-5600-990001 (05600-990001 / 0-5600-990001) +44-5600-990002 / 0044-5600-990002 (05600-990002 / 0-5600-990002) +44-5600-990003 / 0044-5600-990003 (05600-990003 / 0-5600-990003) +44-5600-990004 / 0044-5600-990004 (05600-990004 / 0-5600-990004) ...+44-5600-xxxxxx / 0044-5600-xxxxxx (05600-xxxxxx / 0-5600-xxxxxx) ...+44-5600-999995 / 0044-5600-999995 (05600-999995 / 0-5600-999995) +44-5600-999996 / 0044-5600-999996 (05600-999996 / 0-5600-999996) +44-5600-999997 / 0044-5600-999997 (05600-999997 / 0-5600-999997) +44-5600-999998 / 0044-5600-999998 (05600-999998 / 0-5600-999998) +44-5600-999999 / 0044-5600-999999 (05600-999999 / 0-5600-999999)