Area Code +81-501-(4790000...4799999) 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 : 4790000 Subscriber Number To : 4799999 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-(4780000...4789999) next › : +81-501-(4800000...4809999) Dialling Instructions For trunk calls: 0 501 4790000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 501 4790000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4790000 ~ 4799999 (Count: 10,000) Example: +81-501-4790000 / 01081-501-4790000 (0501-4790000 / 0-501-4790000) +81-501-4790001 / 01081-501-4790001 (0501-4790001 / 0-501-4790001) +81-501-4790002 / 01081-501-4790002 (0501-4790002 / 0-501-4790002) +81-501-4790003 / 01081-501-4790003 (0501-4790003 / 0-501-4790003) +81-501-4790004 / 01081-501-4790004 (0501-4790004 / 0-501-4790004) ...+81-501-xxxxxxx / 01081-501-xxxxxxx (0501-xxxxxxx / 0-501-xxxxxxx) ...+81-501-4799995 / 01081-501-4799995 (0501-4799995 / 0-501-4799995) +81-501-4799996 / 01081-501-4799996 (0501-4799996 / 0-501-4799996) +81-501-4799997 / 01081-501-4799997 (0501-4799997 / 0-501-4799997) +81-501-4799998 / 01081-501-4799998 (0501-4799998 / 0-501-4799998) +81-501-4799999 / 01081-501-4799999 (0501-4799999 / 0-501-4799999)