Area Code +81-503-(3770000...3779999) 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 : 3770000 Subscriber Number To : 3779999 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-(3760000...3769999) next › : +81-503-(3780000...3789999) Dialling Instructions For trunk calls: 0 503 3770000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 503 3770000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3770000 ~ 3779999 (Count: 10,000) Example: +81-503-3770000 / 01081-503-3770000 (0503-3770000 / 0-503-3770000) +81-503-3770001 / 01081-503-3770001 (0503-3770001 / 0-503-3770001) +81-503-3770002 / 01081-503-3770002 (0503-3770002 / 0-503-3770002) +81-503-3770003 / 01081-503-3770003 (0503-3770003 / 0-503-3770003) +81-503-3770004 / 01081-503-3770004 (0503-3770004 / 0-503-3770004) ...+81-503-xxxxxxx / 01081-503-xxxxxxx (0503-xxxxxxx / 0-503-xxxxxxx) ...+81-503-3779995 / 01081-503-3779995 (0503-3779995 / 0-503-3779995) +81-503-3779996 / 01081-503-3779996 (0503-3779996 / 0-503-3779996) +81-503-3779997 / 01081-503-3779997 (0503-3779997 / 0-503-3779997) +81-503-3779998 / 01081-503-3779998 (0503-3779998 / 0-503-3779998) +81-503-3779999 / 01081-503-3779999 (0503-3779999 / 0-503-3779999)
