Area Code +81-501-(2540000...2549999) 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 : 2540000 Subscriber Number To : 2549999 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-(2530000...2539999) next › : +81-501-(2550000...2559999) Dialling Instructions For trunk calls: 0 501 2540000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 501 2540000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2540000 ~ 2549999 (Count: 10,000) Example: +81-501-2540000 / 01081-501-2540000 (0501-2540000 / 0-501-2540000) +81-501-2540001 / 01081-501-2540001 (0501-2540001 / 0-501-2540001) +81-501-2540002 / 01081-501-2540002 (0501-2540002 / 0-501-2540002) +81-501-2540003 / 01081-501-2540003 (0501-2540003 / 0-501-2540003) +81-501-2540004 / 01081-501-2540004 (0501-2540004 / 0-501-2540004) ...+81-501-xxxxxxx / 01081-501-xxxxxxx (0501-xxxxxxx / 0-501-xxxxxxx) ...+81-501-2549995 / 01081-501-2549995 (0501-2549995 / 0-501-2549995) +81-501-2549996 / 01081-501-2549996 (0501-2549996 / 0-501-2549996) +81-501-2549997 / 01081-501-2549997 (0501-2549997 / 0-501-2549997) +81-501-2549998 / 01081-501-2549998 (0501-2549998 / 0-501-2549998) +81-501-2549999 / 01081-501-2549999 (0501-2549999 / 0-501-2549999)