Area Code +44-1438-(390000...399999) located in Stevenage, Hertfordshire (HRT), more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 1438 Subscriber Number From : 390000 Subscriber Number To : 399999 National Destination Code Length : 4 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : Voicetec Systems Ltd 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 : HRT Region Name : Hertfordshire City : Stevenage Timezone : Europe/London Coordinated Universal Time : +00:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 51.9000 Longitude : -0.2000 ‹ previous : +44-1438-(389000...389999) next › : +44-1438-(400000...409999) Dialling Instructions For trunk calls: 0 1438 390000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 1438 390000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 390000 ~ 399999 (Count: 10,000) Example: +44-1438-390000 / 0044-1438-390000 (01438-390000 / 0-1438-390000) +44-1438-390001 / 0044-1438-390001 (01438-390001 / 0-1438-390001) +44-1438-390002 / 0044-1438-390002 (01438-390002 / 0-1438-390002) +44-1438-390003 / 0044-1438-390003 (01438-390003 / 0-1438-390003) +44-1438-390004 / 0044-1438-390004 (01438-390004 / 0-1438-390004) ...+44-1438-xxxxxx / 0044-1438-xxxxxx (01438-xxxxxx / 0-1438-xxxxxx) ...+44-1438-399995 / 0044-1438-399995 (01438-399995 / 0-1438-399995) +44-1438-399996 / 0044-1438-399996 (01438-399996 / 0-1438-399996) +44-1438-399997 / 0044-1438-399997 (01438-399997 / 0-1438-399997) +44-1438-399998 / 0044-1438-399998 (01438-399998 / 0-1438-399998) +44-1438-399999 / 0044-1438-399999 (01438-399999 / 0-1438-399999)