Area Code +81-506-(8660000...8669999) located in VoIP, more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 506 Subscriber Number From : 8660000 Subscriber Number To : 8669999 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 : ZIP Telecom 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 : +81-506-(8650000...8659999) next › : +81-506-(8670000...8679999) Dialling Instructions For trunk calls: 0 506 8660000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 506 8660000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 8660000 ~ 8669999 (Count: 10,000) Example: +81-506-8660000 / 01081-506-8660000 (0506-8660000 / 0-506-8660000) +81-506-8660001 / 01081-506-8660001 (0506-8660001 / 0-506-8660001) +81-506-8660002 / 01081-506-8660002 (0506-8660002 / 0-506-8660002) +81-506-8660003 / 01081-506-8660003 (0506-8660003 / 0-506-8660003) +81-506-8660004 / 01081-506-8660004 (0506-8660004 / 0-506-8660004) ...+81-506-xxxxxxx / 01081-506-xxxxxxx (0506-xxxxxxx / 0-506-xxxxxxx) ...+81-506-8669995 / 01081-506-8669995 (0506-8669995 / 0-506-8669995) +81-506-8669996 / 01081-506-8669996 (0506-8669996 / 0-506-8669996) +81-506-8669997 / 01081-506-8669997 (0506-8669997 / 0-506-8669997) +81-506-8669998 / 01081-506-8669998 (0506-8669998 / 0-506-8669998) +81-506-8669999 / 01081-506-8669999 (0506-8669999 / 0-506-8669999)