Area Code +81-501-(5150000...5159999) 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 : 5150000 Subscriber Number To : 5159999 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-(5140000...5149999) next › : +81-501-(5160000...5169999) Dialling Instructions For trunk calls: 0 501 5150000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 501 5150000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 5150000 ~ 5159999 (Count: 10,000) Example: +81-501-5150000 / 01081-501-5150000 (0501-5150000 / 0-501-5150000) +81-501-5150001 / 01081-501-5150001 (0501-5150001 / 0-501-5150001) +81-501-5150002 / 01081-501-5150002 (0501-5150002 / 0-501-5150002) +81-501-5150003 / 01081-501-5150003 (0501-5150003 / 0-501-5150003) +81-501-5150004 / 01081-501-5150004 (0501-5150004 / 0-501-5150004) ...+81-501-xxxxxxx / 01081-501-xxxxxxx (0501-xxxxxxx / 0-501-xxxxxxx) ...+81-501-5159995 / 01081-501-5159995 (0501-5159995 / 0-501-5159995) +81-501-5159996 / 01081-501-5159996 (0501-5159996 / 0-501-5159996) +81-501-5159997 / 01081-501-5159997 (0501-5159997 / 0-501-5159997) +81-501-5159998 / 01081-501-5159998 (0501-5159998 / 0-501-5159998) +81-501-5159999 / 01081-501-5159999 (0501-5159999 / 0-501-5159999)