Area Code +44-5601-(830000...839999) located in VoIP, more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 5601 Subscriber Number From : 830000 Subscriber Number To : 839999 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 : FTC 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 : +44-5601-(820000...829999) next › : +44-5601-(840000...849999) Dialling Instructions For trunk calls: 0 5601 830000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 5601 830000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 830000 ~ 839999 (Count: 10,000) Example: +44-5601-830000 / 0044-5601-830000 (05601-830000 / 0-5601-830000) +44-5601-830001 / 0044-5601-830001 (05601-830001 / 0-5601-830001) +44-5601-830002 / 0044-5601-830002 (05601-830002 / 0-5601-830002) +44-5601-830003 / 0044-5601-830003 (05601-830003 / 0-5601-830003) +44-5601-830004 / 0044-5601-830004 (05601-830004 / 0-5601-830004) ...+44-5601-xxxxxx / 0044-5601-xxxxxx (05601-xxxxxx / 0-5601-xxxxxx) ...+44-5601-839995 / 0044-5601-839995 (05601-839995 / 0-5601-839995) +44-5601-839996 / 0044-5601-839996 (05601-839996 / 0-5601-839996) +44-5601-839997 / 0044-5601-839997 (05601-839997 / 0-5601-839997) +44-5601-839998 / 0044-5601-839998 (05601-839998 / 0-5601-839998) +44-5601-839999 / 0044-5601-839999 (05601-839999 / 0-5601-839999)