Area Code +44-5601-(670000...679999) 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 : 670000 Subscriber Number To : 679999 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 : BT 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-(660000...669999) next › : +44-5601-(680000...689999) Dialling Instructions For trunk calls: 0 5601 670000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 5601 670000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 670000 ~ 679999 (Count: 10,000) Example: +44-5601-670000 / 0044-5601-670000 (05601-670000 / 0-5601-670000) +44-5601-670001 / 0044-5601-670001 (05601-670001 / 0-5601-670001) +44-5601-670002 / 0044-5601-670002 (05601-670002 / 0-5601-670002) +44-5601-670003 / 0044-5601-670003 (05601-670003 / 0-5601-670003) +44-5601-670004 / 0044-5601-670004 (05601-670004 / 0-5601-670004) ...+44-5601-xxxxxx / 0044-5601-xxxxxx (05601-xxxxxx / 0-5601-xxxxxx) ...+44-5601-679995 / 0044-5601-679995 (05601-679995 / 0-5601-679995) +44-5601-679996 / 0044-5601-679996 (05601-679996 / 0-5601-679996) +44-5601-679997 / 0044-5601-679997 (05601-679997 / 0-5601-679997) +44-5601-679998 / 0044-5601-679998 (05601-679998 / 0-5601-679998) +44-5601-679999 / 0044-5601-679999 (05601-679999 / 0-5601-679999)