Area Code +81-428-(830000...839999) 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 : 830000 Subscriber Number To : 839999 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-(820000...829999) next › : +81-428-(840000...849999) Dialling Instructions For trunk calls: 0 428 830000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 428 830000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 830000 ~ 839999 (Count: 10,000) Example: +81-428-830000 / 01081-428-830000 (0428-830000 / 0-428-830000) +81-428-830001 / 01081-428-830001 (0428-830001 / 0-428-830001) +81-428-830002 / 01081-428-830002 (0428-830002 / 0-428-830002) +81-428-830003 / 01081-428-830003 (0428-830003 / 0-428-830003) +81-428-830004 / 01081-428-830004 (0428-830004 / 0-428-830004) ...+81-428-xxxxxx / 01081-428-xxxxxx (0428-xxxxxx / 0-428-xxxxxx) ...+81-428-839995 / 01081-428-839995 (0428-839995 / 0-428-839995) +81-428-839996 / 01081-428-839996 (0428-839996 / 0-428-839996) +81-428-839997 / 01081-428-839997 (0428-839997 / 0-428-839997) +81-428-839998 / 01081-428-839998 (0428-839998 / 0-428-839998) +81-428-839999 / 01081-428-839999 (0428-839999 / 0-428-839999)