Area Code +81-438-(230000...239999) 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 : 230000 Subscriber Number To : 239999 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-(220000...229999) next › : +81-438-(250000...259999) Dialling Instructions For trunk calls: 0 438 230000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 438 230000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 230000 ~ 239999 (Count: 10,000) Example: +81-438-230000 / 01081-438-230000 (0438-230000 / 0-438-230000) +81-438-230001 / 01081-438-230001 (0438-230001 / 0-438-230001) +81-438-230002 / 01081-438-230002 (0438-230002 / 0-438-230002) +81-438-230003 / 01081-438-230003 (0438-230003 / 0-438-230003) +81-438-230004 / 01081-438-230004 (0438-230004 / 0-438-230004) ...+81-438-xxxxxx / 01081-438-xxxxxx (0438-xxxxxx / 0-438-xxxxxx) ...+81-438-239995 / 01081-438-239995 (0438-239995 / 0-438-239995) +81-438-239996 / 01081-438-239996 (0438-239996 / 0-438-239996) +81-438-239997 / 01081-438-239997 (0438-239997 / 0-438-239997) +81-438-239998 / 01081-438-239998 (0438-239998 / 0-438-239998) +81-438-239999 / 01081-438-239999 (0438-239999 / 0-438-239999)