Area Code +81-123-(390000...399999) located in Chitose, Hokkaido (01), more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 123 Subscriber Number From : 390000 Subscriber Number To : 399999 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 : 01 Region Name : Hokkaido City : Chitose Timezone : Asia/Tokyo Coordinated Universal Time : +09:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 42.8200 Longitude : 141.6500 ‹ previous : +81-123-(380000...389999) next › : +81-123-(400000...409999) Dialling Instructions For trunk calls: 0 123 390000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 123 390000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 390000 ~ 399999 (Count: 10,000) Example: +81-123-390000 / 01081-123-390000 (0123-390000 / 0-123-390000) +81-123-390001 / 01081-123-390001 (0123-390001 / 0-123-390001) +81-123-390002 / 01081-123-390002 (0123-390002 / 0-123-390002) +81-123-390003 / 01081-123-390003 (0123-390003 / 0-123-390003) +81-123-390004 / 01081-123-390004 (0123-390004 / 0-123-390004) ...+81-123-xxxxxx / 01081-123-xxxxxx (0123-xxxxxx / 0-123-xxxxxx) ...+81-123-399995 / 01081-123-399995 (0123-399995 / 0-123-399995) +81-123-399996 / 01081-123-399996 (0123-399996 / 0-123-399996) +81-123-399997 / 01081-123-399997 (0123-399997 / 0-123-399997) +81-123-399998 / 01081-123-399998 (0123-399998 / 0-123-399998) +81-123-399999 / 01081-123-399999 (0123-399999 / 0-123-399999)