Area Code +44-5603-(550000...559999) located in VoIP, more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 5603 Subscriber Number From : 550000 Subscriber Number To : 559999 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 : Proton 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 : 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 : +44-5603-(540000...549999) next › : +44-5603-(560000...569999) Dialling Instructions For trunk calls: 0 5603 550000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 5603 550000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 550000 ~ 559999 (Count: 10,000) Example: +44-5603-550000 / 0044-5603-550000 (05603-550000 / 0-5603-550000) +44-5603-550001 / 0044-5603-550001 (05603-550001 / 0-5603-550001) +44-5603-550002 / 0044-5603-550002 (05603-550002 / 0-5603-550002) +44-5603-550003 / 0044-5603-550003 (05603-550003 / 0-5603-550003) +44-5603-550004 / 0044-5603-550004 (05603-550004 / 0-5603-550004) ...+44-5603-xxxxxx / 0044-5603-xxxxxx (05603-xxxxxx / 0-5603-xxxxxx) ...+44-5603-559995 / 0044-5603-559995 (05603-559995 / 0-5603-559995) +44-5603-559996 / 0044-5603-559996 (05603-559996 / 0-5603-559996) +44-5603-559997 / 0044-5603-559997 (05603-559997 / 0-5603-559997) +44-5603-559998 / 0044-5603-559998 (05603-559998 / 0-5603-559998) +44-5603-559999 / 0044-5603-559999 (05603-559999 / 0-5603-559999)
