Area Code +81-503-(4900000...4909999) located in VoIP, more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 503 Subscriber Number From : 4900000 Subscriber Number To : 4909999 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 : NTT Communications 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 : +81-503-(4890000...4899999) next › : +81-503-(4910000...4919999) Dialling Instructions For trunk calls: 0 503 4900000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 503 4900000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4900000 ~ 4909999 (Count: 10,000) Example: +81-503-4900000 / 01081-503-4900000 (0503-4900000 / 0-503-4900000) +81-503-4900001 / 01081-503-4900001 (0503-4900001 / 0-503-4900001) +81-503-4900002 / 01081-503-4900002 (0503-4900002 / 0-503-4900002) +81-503-4900003 / 01081-503-4900003 (0503-4900003 / 0-503-4900003) +81-503-4900004 / 01081-503-4900004 (0503-4900004 / 0-503-4900004) ...+81-503-xxxxxxx / 01081-503-xxxxxxx (0503-xxxxxxx / 0-503-xxxxxxx) ...+81-503-4909995 / 01081-503-4909995 (0503-4909995 / 0-503-4909995) +81-503-4909996 / 01081-503-4909996 (0503-4909996 / 0-503-4909996) +81-503-4909997 / 01081-503-4909997 (0503-4909997 / 0-503-4909997) +81-503-4909998 / 01081-503-4909998 (0503-4909998 / 0-503-4909998) +81-503-4909999 / 01081-503-4909999 (0503-4909999 / 0-503-4909999)