Area Code +81-438-(380000...389999) 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 : 380000 Subscriber Number To : 389999 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-(370000...379999) next › : +81-438-(400000...409999) Dialling Instructions For trunk calls: 0 438 380000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 438 380000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 380000 ~ 389999 (Count: 10,000) Example: +81-438-380000 / 01081-438-380000 (0438-380000 / 0-438-380000) +81-438-380001 / 01081-438-380001 (0438-380001 / 0-438-380001) +81-438-380002 / 01081-438-380002 (0438-380002 / 0-438-380002) +81-438-380003 / 01081-438-380003 (0438-380003 / 0-438-380003) +81-438-380004 / 01081-438-380004 (0438-380004 / 0-438-380004) ...+81-438-xxxxxx / 01081-438-xxxxxx (0438-xxxxxx / 0-438-xxxxxx) ...+81-438-389995 / 01081-438-389995 (0438-389995 / 0-438-389995) +81-438-389996 / 01081-438-389996 (0438-389996 / 0-438-389996) +81-438-389997 / 01081-438-389997 (0438-389997 / 0-438-389997) +81-438-389998 / 01081-438-389998 (0438-389998 / 0-438-389998) +81-438-389999 / 01081-438-389999 (0438-389999 / 0-438-389999)