Area Code +81-501-(7180000...7189999) 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 : 7180000 Subscriber Number To : 7189999 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-(7170000...7179999) next › : +81-501-(7190000...7199999) Dialling Instructions For trunk calls: 0 501 7180000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 501 7180000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 7180000 ~ 7189999 (Count: 10,000) Example: +81-501-7180000 / 01081-501-7180000 (0501-7180000 / 0-501-7180000) +81-501-7180001 / 01081-501-7180001 (0501-7180001 / 0-501-7180001) +81-501-7180002 / 01081-501-7180002 (0501-7180002 / 0-501-7180002) +81-501-7180003 / 01081-501-7180003 (0501-7180003 / 0-501-7180003) +81-501-7180004 / 01081-501-7180004 (0501-7180004 / 0-501-7180004) ...+81-501-xxxxxxx / 01081-501-xxxxxxx (0501-xxxxxxx / 0-501-xxxxxxx) ...+81-501-7189995 / 01081-501-7189995 (0501-7189995 / 0-501-7189995) +81-501-7189996 / 01081-501-7189996 (0501-7189996 / 0-501-7189996) +81-501-7189997 / 01081-501-7189997 (0501-7189997 / 0-501-7189997) +81-501-7189998 / 01081-501-7189998 (0501-7189998 / 0-501-7189998) +81-501-7189999 / 01081-501-7189999 (0501-7189999 / 0-501-7189999)