Area Code +81-501-(5410000...5419999) located in VoIP, more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 501 Subscriber Number From : 5410000 Subscriber Number To : 5419999 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 : Softbank Broadband 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 : +81-501-(5400000...5409999) next › : +81-501-(5420000...5429999) Dialling Instructions For trunk calls: 0 501 5410000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 501 5410000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 5410000 ~ 5419999 (Count: 10,000) Example: +81-501-5410000 / 01081-501-5410000 (0501-5410000 / 0-501-5410000) +81-501-5410001 / 01081-501-5410001 (0501-5410001 / 0-501-5410001) +81-501-5410002 / 01081-501-5410002 (0501-5410002 / 0-501-5410002) +81-501-5410003 / 01081-501-5410003 (0501-5410003 / 0-501-5410003) +81-501-5410004 / 01081-501-5410004 (0501-5410004 / 0-501-5410004) ...+81-501-xxxxxxx / 01081-501-xxxxxxx (0501-xxxxxxx / 0-501-xxxxxxx) ...+81-501-5419995 / 01081-501-5419995 (0501-5419995 / 0-501-5419995) +81-501-5419996 / 01081-501-5419996 (0501-5419996 / 0-501-5419996) +81-501-5419997 / 01081-501-5419997 (0501-5419997 / 0-501-5419997) +81-501-5419998 / 01081-501-5419998 (0501-5419998 / 0-501-5419998) +81-501-5419999 / 01081-501-5419999 (0501-5419999 / 0-501-5419999)