Area Code +81-428-(850000...859999) 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 : 850000 Subscriber Number To : 859999 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-(840000...849999) next › : +81-428-(860000...869999) Dialling Instructions For trunk calls: 0 428 850000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 428 850000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 850000 ~ 859999 (Count: 10,000) Example: +81-428-850000 / 01081-428-850000 (0428-850000 / 0-428-850000) +81-428-850001 / 01081-428-850001 (0428-850001 / 0-428-850001) +81-428-850002 / 01081-428-850002 (0428-850002 / 0-428-850002) +81-428-850003 / 01081-428-850003 (0428-850003 / 0-428-850003) +81-428-850004 / 01081-428-850004 (0428-850004 / 0-428-850004) ...+81-428-xxxxxx / 01081-428-xxxxxx (0428-xxxxxx / 0-428-xxxxxx) ...+81-428-859995 / 01081-428-859995 (0428-859995 / 0-428-859995) +81-428-859996 / 01081-428-859996 (0428-859996 / 0-428-859996) +81-428-859997 / 01081-428-859997 (0428-859997 / 0-428-859997) +81-428-859998 / 01081-428-859998 (0428-859998 / 0-428-859998) +81-428-859999 / 01081-428-859999 (0428-859999 / 0-428-859999)