Area Code +81-501-(3010000...3019999) 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 : 3010000 Subscriber Number To : 3019999 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-(3000000...3009999) next › : +81-501-(3020000...3029999) Dialling Instructions For trunk calls: 0 501 3010000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 501 3010000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3010000 ~ 3019999 (Count: 10,000) Example: +81-501-3010000 / 01081-501-3010000 (0501-3010000 / 0-501-3010000) +81-501-3010001 / 01081-501-3010001 (0501-3010001 / 0-501-3010001) +81-501-3010002 / 01081-501-3010002 (0501-3010002 / 0-501-3010002) +81-501-3010003 / 01081-501-3010003 (0501-3010003 / 0-501-3010003) +81-501-3010004 / 01081-501-3010004 (0501-3010004 / 0-501-3010004) ...+81-501-xxxxxxx / 01081-501-xxxxxxx (0501-xxxxxxx / 0-501-xxxxxxx) ...+81-501-3019995 / 01081-501-3019995 (0501-3019995 / 0-501-3019995) +81-501-3019996 / 01081-501-3019996 (0501-3019996 / 0-501-3019996) +81-501-3019997 / 01081-501-3019997 (0501-3019997 / 0-501-3019997) +81-501-3019998 / 01081-501-3019998 (0501-3019998 / 0-501-3019998) +81-501-3019999 / 01081-501-3019999 (0501-3019999 / 0-501-3019999)