Area Code +81-503-(3080000...3089999) 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 : 3080000 Subscriber Number To : 3089999 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-(3070000...3079999) next › : +81-503-(3090000...3099999) Dialling Instructions For trunk calls: 0 503 3080000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 503 3080000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3080000 ~ 3089999 (Count: 10,000) Example: +81-503-3080000 / 01081-503-3080000 (0503-3080000 / 0-503-3080000) +81-503-3080001 / 01081-503-3080001 (0503-3080001 / 0-503-3080001) +81-503-3080002 / 01081-503-3080002 (0503-3080002 / 0-503-3080002) +81-503-3080003 / 01081-503-3080003 (0503-3080003 / 0-503-3080003) +81-503-3080004 / 01081-503-3080004 (0503-3080004 / 0-503-3080004) ...+81-503-xxxxxxx / 01081-503-xxxxxxx (0503-xxxxxxx / 0-503-xxxxxxx) ...+81-503-3089995 / 01081-503-3089995 (0503-3089995 / 0-503-3089995) +81-503-3089996 / 01081-503-3089996 (0503-3089996 / 0-503-3089996) +81-503-3089997 / 01081-503-3089997 (0503-3089997 / 0-503-3089997) +81-503-3089998 / 01081-503-3089998 (0503-3089998 / 0-503-3089998) +81-503-3089999 / 01081-503-3089999 (0503-3089999 / 0-503-3089999)