Area Code +81-501-(8090000...8099999) located in VoIP, more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 501 Subscriber Number From : 8090000 Subscriber Number To : 8099999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : V (VoIP, Location Independent fixed land line) Carrier Name : Softbank Broadband Click here to buy Japan Area Code Database Other Information Language Code : ja (Japanese) Country Number : 392 (Japan) Country Code : JP (Japan) City : VoIP Timezone : Asia/Tokyo Coordinated Universal Time : +09:00 Daylight Saving Time : No National Significant Number Minimum Length : 10 Latitude : None Longitude : None ‹ previous : +81-501-(8080000...8089999) next › : +81-501-(8100000...8109999) Dialling Instructions For trunk calls: 0 501 8090000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 501 8090000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 8090000 ~ 8099999 (Count: 10,000) Example: +81-501-8090000 / 01081-501-8090000 (0501-8090000 / 0-501-8090000) +81-501-8090001 / 01081-501-8090001 (0501-8090001 / 0-501-8090001) +81-501-8090002 / 01081-501-8090002 (0501-8090002 / 0-501-8090002) +81-501-8090003 / 01081-501-8090003 (0501-8090003 / 0-501-8090003) +81-501-8090004 / 01081-501-8090004 (0501-8090004 / 0-501-8090004) ...+81-501-xxxxxxx / 01081-501-xxxxxxx (0501-xxxxxxx / 0-501-xxxxxxx) ...+81-501-8099995 / 01081-501-8099995 (0501-8099995 / 0-501-8099995) +81-501-8099996 / 01081-501-8099996 (0501-8099996 / 0-501-8099996) +81-501-8099997 / 01081-501-8099997 (0501-8099997 / 0-501-8099997) +81-501-8099998 / 01081-501-8099998 (0501-8099998 / 0-501-8099998) +81-501-8099999 / 01081-501-8099999 (0501-8099999 / 0-501-8099999)