Area Code +81-438-(370000...379999) located in Kisarazu, Chiba (12), more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 438 Subscriber Number From : 370000 Subscriber Number To : 379999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : NTT East Click here to buy Japan Area Code Database Other Information Language Code : ja (Japanese) Country Number : 392 (Japan) Country Code : JP (Japan) Region Code : 12 Region Name : Chiba City : Kisarazu Timezone : Asia/Tokyo Coordinated Universal Time : +09:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 35.3800 Longitude : 139.9200 ‹ previous : +81-438-(360000...369999) next › : +81-438-(380000...389999) Dialling Instructions For trunk calls: 0 438 370000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 438 370000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 370000 ~ 379999 (Count: 10,000) Example: +81-438-370000 / 01081-438-370000 (0438-370000 / 0-438-370000) +81-438-370001 / 01081-438-370001 (0438-370001 / 0-438-370001) +81-438-370002 / 01081-438-370002 (0438-370002 / 0-438-370002) +81-438-370003 / 01081-438-370003 (0438-370003 / 0-438-370003) +81-438-370004 / 01081-438-370004 (0438-370004 / 0-438-370004) ...+81-438-xxxxxx / 01081-438-xxxxxx (0438-xxxxxx / 0-438-xxxxxx) ...+81-438-379995 / 01081-438-379995 (0438-379995 / 0-438-379995) +81-438-379996 / 01081-438-379996 (0438-379996 / 0-438-379996) +81-438-379997 / 01081-438-379997 (0438-379997 / 0-438-379997) +81-438-379998 / 01081-438-379998 (0438-379998 / 0-438-379998) +81-438-379999 / 01081-438-379999 (0438-379999 / 0-438-379999)