Area Code +81-503-(3470000...3479999) 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 : 3470000 Subscriber Number To : 3479999 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-(3460000...3469999) next › : +81-503-(3480000...3489999) Dialling Instructions For trunk calls: 0 503 3470000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 503 3470000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3470000 ~ 3479999 (Count: 10,000) Example: +81-503-3470000 / 01081-503-3470000 (0503-3470000 / 0-503-3470000) +81-503-3470001 / 01081-503-3470001 (0503-3470001 / 0-503-3470001) +81-503-3470002 / 01081-503-3470002 (0503-3470002 / 0-503-3470002) +81-503-3470003 / 01081-503-3470003 (0503-3470003 / 0-503-3470003) +81-503-3470004 / 01081-503-3470004 (0503-3470004 / 0-503-3470004) ...+81-503-xxxxxxx / 01081-503-xxxxxxx (0503-xxxxxxx / 0-503-xxxxxxx) ...+81-503-3479995 / 01081-503-3479995 (0503-3479995 / 0-503-3479995) +81-503-3479996 / 01081-503-3479996 (0503-3479996 / 0-503-3479996) +81-503-3479997 / 01081-503-3479997 (0503-3479997 / 0-503-3479997) +81-503-3479998 / 01081-503-3479998 (0503-3479998 / 0-503-3479998) +81-503-3479999 / 01081-503-3479999 (0503-3479999 / 0-503-3479999)