Area Code +81-501-(4800000...4809999) 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 : 4800000 Subscriber Number To : 4809999 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-(4790000...4799999) next › : +81-501-(4810000...4819999) Dialling Instructions For trunk calls: 0 501 4800000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 501 4800000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4800000 ~ 4809999 (Count: 10,000) Example: +81-501-4800000 / 01081-501-4800000 (0501-4800000 / 0-501-4800000) +81-501-4800001 / 01081-501-4800001 (0501-4800001 / 0-501-4800001) +81-501-4800002 / 01081-501-4800002 (0501-4800002 / 0-501-4800002) +81-501-4800003 / 01081-501-4800003 (0501-4800003 / 0-501-4800003) +81-501-4800004 / 01081-501-4800004 (0501-4800004 / 0-501-4800004) ...+81-501-xxxxxxx / 01081-501-xxxxxxx (0501-xxxxxxx / 0-501-xxxxxxx) ...+81-501-4809995 / 01081-501-4809995 (0501-4809995 / 0-501-4809995) +81-501-4809996 / 01081-501-4809996 (0501-4809996 / 0-501-4809996) +81-501-4809997 / 01081-501-4809997 (0501-4809997 / 0-501-4809997) +81-501-4809998 / 01081-501-4809998 (0501-4809998 / 0-501-4809998) +81-501-4809999 / 01081-501-4809999 (0501-4809999 / 0-501-4809999)