Area Code +81-506-(8630000...8639999) 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 : 8630000 Subscriber Number To : 8639999 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-(8620000...8629999) next › : +81-506-(8640000...8649999) Dialling Instructions For trunk calls: 0 506 8630000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 506 8630000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 8630000 ~ 8639999 (Count: 10,000) Example: +81-506-8630000 / 01081-506-8630000 (0506-8630000 / 0-506-8630000) +81-506-8630001 / 01081-506-8630001 (0506-8630001 / 0-506-8630001) +81-506-8630002 / 01081-506-8630002 (0506-8630002 / 0-506-8630002) +81-506-8630003 / 01081-506-8630003 (0506-8630003 / 0-506-8630003) +81-506-8630004 / 01081-506-8630004 (0506-8630004 / 0-506-8630004) ...+81-506-xxxxxxx / 01081-506-xxxxxxx (0506-xxxxxxx / 0-506-xxxxxxx) ...+81-506-8639995 / 01081-506-8639995 (0506-8639995 / 0-506-8639995) +81-506-8639996 / 01081-506-8639996 (0506-8639996 / 0-506-8639996) +81-506-8639997 / 01081-506-8639997 (0506-8639997 / 0-506-8639997) +81-506-8639998 / 01081-506-8639998 (0506-8639998 / 0-506-8639998) +81-506-8639999 / 01081-506-8639999 (0506-8639999 / 0-506-8639999)