Area Code +81-503-(3330000...3339999) 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 : 3330000 Subscriber Number To : 3339999 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-(3320000...3329999) next › : +81-503-(3340000...3349999) Dialling Instructions For trunk calls: 0 503 3330000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 503 3330000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3330000 ~ 3339999 (Count: 10,000) Example: +81-503-3330000 / 01081-503-3330000 (0503-3330000 / 0-503-3330000) +81-503-3330001 / 01081-503-3330001 (0503-3330001 / 0-503-3330001) +81-503-3330002 / 01081-503-3330002 (0503-3330002 / 0-503-3330002) +81-503-3330003 / 01081-503-3330003 (0503-3330003 / 0-503-3330003) +81-503-3330004 / 01081-503-3330004 (0503-3330004 / 0-503-3330004) ...+81-503-xxxxxxx / 01081-503-xxxxxxx (0503-xxxxxxx / 0-503-xxxxxxx) ...+81-503-3339995 / 01081-503-3339995 (0503-3339995 / 0-503-3339995) +81-503-3339996 / 01081-503-3339996 (0503-3339996 / 0-503-3339996) +81-503-3339997 / 01081-503-3339997 (0503-3339997 / 0-503-3339997) +81-503-3339998 / 01081-503-3339998 (0503-3339998 / 0-503-3339998) +81-503-3339999 / 01081-503-3339999 (0503-3339999 / 0-503-3339999)