Area Code +81-509-(0010000...0019999) located in VoIP, more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 509 Subscriber Number From : 0010000 Subscriber Number To : 0019999 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 : DoCoMo 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 : +81-509-(0000000...0009999) next › : +81-509-(0020000...0029999) Dialling Instructions For trunk calls: 0 509 0010000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 509 0010000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 0010000 ~ 0019999 (Count: 10,000) Example: +81-509-0010000 / 01081-509-0010000 (0509-0010000 / 0-509-0010000) +81-509-0010001 / 01081-509-0010001 (0509-0010001 / 0-509-0010001) +81-509-0010002 / 01081-509-0010002 (0509-0010002 / 0-509-0010002) +81-509-0010003 / 01081-509-0010003 (0509-0010003 / 0-509-0010003) +81-509-0010004 / 01081-509-0010004 (0509-0010004 / 0-509-0010004) ...+81-509-xxxxxxx / 01081-509-xxxxxxx (0509-xxxxxxx / 0-509-xxxxxxx) ...+81-509-0019995 / 01081-509-0019995 (0509-0019995 / 0-509-0019995) +81-509-0019996 / 01081-509-0019996 (0509-0019996 / 0-509-0019996) +81-509-0019997 / 01081-509-0019997 (0509-0019997 / 0-509-0019997) +81-509-0019998 / 01081-509-0019998 (0509-0019998 / 0-509-0019998) +81-509-0019999 / 01081-509-0019999 (0509-0019999 / 0-509-0019999)