Area Code +81-50-(88100000...88109999) located in VoIP, more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 50 Subscriber Number From : 88100000 Subscriber Number To : 88109999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : V (VoIP, Location Independent fixed land line) Carrier Name : STNet 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 : 35.6900 Longitude : 139.6900 ‹ previous : +81-50-(88090000...88099999) next › : +81-50-(88640000...88649999) Dialling Instructions For trunk calls: 0 50 88100000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 50 88100000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 88100000 ~ 88109999 (Count: 10,000) Example: +81-50-88100000 / 01081-50-88100000 (050-88100000 / 0-50-88100000) +81-50-88100001 / 01081-50-88100001 (050-88100001 / 0-50-88100001) +81-50-88100002 / 01081-50-88100002 (050-88100002 / 0-50-88100002) +81-50-88100003 / 01081-50-88100003 (050-88100003 / 0-50-88100003) +81-50-88100004 / 01081-50-88100004 (050-88100004 / 0-50-88100004) ...+81-50-xxxxxxxx / 01081-50-xxxxxxxx (050-xxxxxxxx / 0-50-xxxxxxxx) ...+81-50-88109995 / 01081-50-88109995 (050-88109995 / 0-50-88109995) +81-50-88109996 / 01081-50-88109996 (050-88109996 / 0-50-88109996) +81-50-88109997 / 01081-50-88109997 (050-88109997 / 0-50-88109997) +81-50-88109998 / 01081-50-88109998 (050-88109998 / 0-50-88109998) +81-50-88109999 / 01081-50-88109999 (050-88109999 / 0-50-88109999)