Area Code +81-50-(10030000...10039999) 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 : 10030000 Subscriber Number To : 10039999 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 : Softbank Mobile 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-(10020000...10029999) next › : +81-50-(10040000...10049999) Dialling Instructions For trunk calls: 0 50 10030000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 50 10030000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 10030000 ~ 10039999 (Count: 10,000) Example: +81-50-10030000 / 01081-50-10030000 (050-10030000 / 0-50-10030000) +81-50-10030001 / 01081-50-10030001 (050-10030001 / 0-50-10030001) +81-50-10030002 / 01081-50-10030002 (050-10030002 / 0-50-10030002) +81-50-10030003 / 01081-50-10030003 (050-10030003 / 0-50-10030003) +81-50-10030004 / 01081-50-10030004 (050-10030004 / 0-50-10030004) ...+81-50-xxxxxxxx / 01081-50-xxxxxxxx (050-xxxxxxxx / 0-50-xxxxxxxx) ...+81-50-10039995 / 01081-50-10039995 (050-10039995 / 0-50-10039995) +81-50-10039996 / 01081-50-10039996 (050-10039996 / 0-50-10039996) +81-50-10039997 / 01081-50-10039997 (050-10039997 / 0-50-10039997) +81-50-10039998 / 01081-50-10039998 (050-10039998 / 0-50-10039998) +81-50-10039999 / 01081-50-10039999 (050-10039999 / 0-50-10039999)