Area Code +81-507-(1040000...1049999) located in VoIP, more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 507 Subscriber Number From : 1040000 Subscriber Number To : 1049999 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 : Opticom 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 : +81-507-(1030000...1039999) next › : +81-507-(1050000...1059999) Dialling Instructions For trunk calls: 0 507 1040000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 507 1040000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 1040000 ~ 1049999 (Count: 10,000) Example: +81-507-1040000 / 01081-507-1040000 (0507-1040000 / 0-507-1040000) +81-507-1040001 / 01081-507-1040001 (0507-1040001 / 0-507-1040001) +81-507-1040002 / 01081-507-1040002 (0507-1040002 / 0-507-1040002) +81-507-1040003 / 01081-507-1040003 (0507-1040003 / 0-507-1040003) +81-507-1040004 / 01081-507-1040004 (0507-1040004 / 0-507-1040004) ...+81-507-xxxxxxx / 01081-507-xxxxxxx (0507-xxxxxxx / 0-507-xxxxxxx) ...+81-507-1049995 / 01081-507-1049995 (0507-1049995 / 0-507-1049995) +81-507-1049996 / 01081-507-1049996 (0507-1049996 / 0-507-1049996) +81-507-1049997 / 01081-507-1049997 (0507-1049997 / 0-507-1049997) +81-507-1049998 / 01081-507-1049998 (0507-1049998 / 0-507-1049998) +81-507-1049999 / 01081-507-1049999 (0507-1049999 / 0-507-1049999)