Area Code +81-503-(6140000...6149999) 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 : 6140000 Subscriber Number To : 6149999 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-(6130000...6139999) next › : +81-503-(6150000...6159999) Dialling Instructions For trunk calls: 0 503 6140000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 503 6140000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6140000 ~ 6149999 (Count: 10,000) Example: +81-503-6140000 / 01081-503-6140000 (0503-6140000 / 0-503-6140000) +81-503-6140001 / 01081-503-6140001 (0503-6140001 / 0-503-6140001) +81-503-6140002 / 01081-503-6140002 (0503-6140002 / 0-503-6140002) +81-503-6140003 / 01081-503-6140003 (0503-6140003 / 0-503-6140003) +81-503-6140004 / 01081-503-6140004 (0503-6140004 / 0-503-6140004) ...+81-503-xxxxxxx / 01081-503-xxxxxxx (0503-xxxxxxx / 0-503-xxxxxxx) ...+81-503-6149995 / 01081-503-6149995 (0503-6149995 / 0-503-6149995) +81-503-6149996 / 01081-503-6149996 (0503-6149996 / 0-503-6149996) +81-503-6149997 / 01081-503-6149997 (0503-6149997 / 0-503-6149997) +81-503-6149998 / 01081-503-6149998 (0503-6149998 / 0-503-6149998) +81-503-6149999 / 01081-503-6149999 (0503-6149999 / 0-503-6149999)