Area Code +81-501-(0040000...0049999) 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 : 0040000 Subscriber Number To : 0049999 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-(0030000...0039999) next › : +81-501-(0050000...0059999) Dialling Instructions For trunk calls: 0 501 0040000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 501 0040000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 0040000 ~ 0049999 (Count: 10,000) Example: +81-501-0040000 / 01081-501-0040000 (0501-0040000 / 0-501-0040000) +81-501-0040001 / 01081-501-0040001 (0501-0040001 / 0-501-0040001) +81-501-0040002 / 01081-501-0040002 (0501-0040002 / 0-501-0040002) +81-501-0040003 / 01081-501-0040003 (0501-0040003 / 0-501-0040003) +81-501-0040004 / 01081-501-0040004 (0501-0040004 / 0-501-0040004) ...+81-501-xxxxxxx / 01081-501-xxxxxxx (0501-xxxxxxx / 0-501-xxxxxxx) ...+81-501-0049995 / 01081-501-0049995 (0501-0049995 / 0-501-0049995) +81-501-0049996 / 01081-501-0049996 (0501-0049996 / 0-501-0049996) +81-501-0049997 / 01081-501-0049997 (0501-0049997 / 0-501-0049997) +81-501-0049998 / 01081-501-0049998 (0501-0049998 / 0-501-0049998) +81-501-0049999 / 01081-501-0049999 (0501-0049999 / 0-501-0049999)