Area Code +44-55-(16600000...16609999) located in Corporate Numbers, more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 55 Subscriber Number From : 16600000 Subscriber Number To : 16609999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : D (D) 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 : Corporate Numbers 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 : +44-55-(16580000...16589999) next › : +44-55-(16630000...16639999) Dialling Instructions For trunk calls: 0 55 16600000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 55 16600000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 16600000 ~ 16609999 (Count: 10,000) Example: +44-55-16600000 / 0044-55-16600000 (055-16600000 / 0-55-16600000) +44-55-16600001 / 0044-55-16600001 (055-16600001 / 0-55-16600001) +44-55-16600002 / 0044-55-16600002 (055-16600002 / 0-55-16600002) +44-55-16600003 / 0044-55-16600003 (055-16600003 / 0-55-16600003) +44-55-16600004 / 0044-55-16600004 (055-16600004 / 0-55-16600004) ...+44-55-xxxxxxxx / 0044-55-xxxxxxxx (055-xxxxxxxx / 0-55-xxxxxxxx) ...+44-55-16609995 / 0044-55-16609995 (055-16609995 / 0-55-16609995) +44-55-16609996 / 0044-55-16609996 (055-16609996 / 0-55-16609996) +44-55-16609997 / 0044-55-16609997 (055-16609997 / 0-55-16609997) +44-55-16609998 / 0044-55-16609998 (055-16609998 / 0-55-16609998) +44-55-16609999 / 0044-55-16609999 (055-16609999 / 0-55-16609999)