Area Code +44-8999-(120000...129999) located in Inbound Routing Codes, more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 8999 Subscriber Number From : 120000 Subscriber Number To : 129999 National Destination Code Length : 4 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : S (Special) 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 : Inbound Routing Codes 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 : +44-8999-(110000...119999) next › : +44-8999-(130000...139999) Dialling Instructions For trunk calls: 0 8999 120000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 8999 120000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 120000 ~ 129999 (Count: 10,000) Example: +44-8999-120000 / 0044-8999-120000 (08999-120000 / 0-8999-120000) +44-8999-120001 / 0044-8999-120001 (08999-120001 / 0-8999-120001) +44-8999-120002 / 0044-8999-120002 (08999-120002 / 0-8999-120002) +44-8999-120003 / 0044-8999-120003 (08999-120003 / 0-8999-120003) +44-8999-120004 / 0044-8999-120004 (08999-120004 / 0-8999-120004) ...+44-8999-xxxxxx / 0044-8999-xxxxxx (08999-xxxxxx / 0-8999-xxxxxx) ...+44-8999-129995 / 0044-8999-129995 (08999-129995 / 0-8999-129995) +44-8999-129996 / 0044-8999-129996 (08999-129996 / 0-8999-129996) +44-8999-129997 / 0044-8999-129997 (08999-129997 / 0-8999-129997) +44-8999-129998 / 0044-8999-129998 (08999-129998 / 0-8999-129998) +44-8999-129999 / 0044-8999-129999 (08999-129999 / 0-8999-129999)