Area Code +44-29-(20170000...20179999) located in Cardiff, Cardiff (CRF), more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 29 Subscriber Number From : 20170000 Subscriber Number To : 20179999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : Linear Telecoms 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) Region Code : CRF Region Name : Cardiff City : Cardiff Timezone : Europe/London Coordinated Universal Time : +00:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 51.4800 Longitude : -3.1800 ‹ previous : +44-29-(20160000...20169999) next › : +44-29-(20190000...20199999) Dialling Instructions For trunk calls: 0 29 20170000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 29 20170000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 20170000 ~ 20179999 (Count: 10,000) Example: +44-29-20170000 / 0044-29-20170000 (029-20170000 / 0-29-20170000) +44-29-20170001 / 0044-29-20170001 (029-20170001 / 0-29-20170001) +44-29-20170002 / 0044-29-20170002 (029-20170002 / 0-29-20170002) +44-29-20170003 / 0044-29-20170003 (029-20170003 / 0-29-20170003) +44-29-20170004 / 0044-29-20170004 (029-20170004 / 0-29-20170004) ...+44-29-xxxxxxxx / 0044-29-xxxxxxxx (029-xxxxxxxx / 0-29-xxxxxxxx) ...+44-29-20179995 / 0044-29-20179995 (029-20179995 / 0-29-20179995) +44-29-20179996 / 0044-29-20179996 (029-20179996 / 0-29-20179996) +44-29-20179997 / 0044-29-20179997 (029-20179997 / 0-29-20179997) +44-29-20179998 / 0044-29-20179998 (029-20179998 / 0-29-20179998) +44-29-20179999 / 0044-29-20179999 (029-20179999 / 0-29-20179999)