Area Code +81-428-(230000...239999) located in Ome, Tokyo (13), more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 428 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 : 13 Region Name : Tokyo City : Ome Timezone : Asia/Tokyo Coordinated Universal Time : +09:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 35.7900 Longitude : 139.2800 ‹ previous : +81-428-(220000...229999) next › : +81-428-(240000...249999) Dialling Instructions For trunk calls: 0 428 230000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 428 230000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 230000 ~ 239999 (Count: 10,000) Example: +81-428-230000 / 01081-428-230000 (0428-230000 / 0-428-230000) +81-428-230001 / 01081-428-230001 (0428-230001 / 0-428-230001) +81-428-230002 / 01081-428-230002 (0428-230002 / 0-428-230002) +81-428-230003 / 01081-428-230003 (0428-230003 / 0-428-230003) +81-428-230004 / 01081-428-230004 (0428-230004 / 0-428-230004) ...+81-428-xxxxxx / 01081-428-xxxxxx (0428-xxxxxx / 0-428-xxxxxx) ...+81-428-239995 / 01081-428-239995 (0428-239995 / 0-428-239995) +81-428-239996 / 01081-428-239996 (0428-239996 / 0-428-239996) +81-428-239997 / 01081-428-239997 (0428-239997 / 0-428-239997) +81-428-239998 / 01081-428-239998 (0428-239998 / 0-428-239998) +81-428-239999 / 01081-428-239999 (0428-239999 / 0-428-239999)