Area Code +81-501-(6320000...6329999) 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 : 6320000 Subscriber Number To : 6329999 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-(6310000...6319999) next › : +81-501-(6330000...6339999) Dialling Instructions For trunk calls: 0 501 6320000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 501 6320000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6320000 ~ 6329999 (Count: 10,000) Example: +81-501-6320000 / 01081-501-6320000 (0501-6320000 / 0-501-6320000) +81-501-6320001 / 01081-501-6320001 (0501-6320001 / 0-501-6320001) +81-501-6320002 / 01081-501-6320002 (0501-6320002 / 0-501-6320002) +81-501-6320003 / 01081-501-6320003 (0501-6320003 / 0-501-6320003) +81-501-6320004 / 01081-501-6320004 (0501-6320004 / 0-501-6320004) ...+81-501-xxxxxxx / 01081-501-xxxxxxx (0501-xxxxxxx / 0-501-xxxxxxx) ...+81-501-6329995 / 01081-501-6329995 (0501-6329995 / 0-501-6329995) +81-501-6329996 / 01081-501-6329996 (0501-6329996 / 0-501-6329996) +81-501-6329997 / 01081-501-6329997 (0501-6329997 / 0-501-6329997) +81-501-6329998 / 01081-501-6329998 (0501-6329998 / 0-501-6329998) +81-501-6329999 / 01081-501-6329999 (0501-6329999 / 0-501-6329999)