Area Code +81-503-(1320000...1329999) 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 : 1320000 Subscriber Number To : 1329999 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 : KDDI 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-(1310000...1319999) next › : +81-503-(1330000...1339999) Dialling Instructions For trunk calls: 0 503 1320000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 503 1320000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 1320000 ~ 1329999 (Count: 10,000) Example: +81-503-1320000 / 01081-503-1320000 (0503-1320000 / 0-503-1320000) +81-503-1320001 / 01081-503-1320001 (0503-1320001 / 0-503-1320001) +81-503-1320002 / 01081-503-1320002 (0503-1320002 / 0-503-1320002) +81-503-1320003 / 01081-503-1320003 (0503-1320003 / 0-503-1320003) +81-503-1320004 / 01081-503-1320004 (0503-1320004 / 0-503-1320004) ...+81-503-xxxxxxx / 01081-503-xxxxxxx (0503-xxxxxxx / 0-503-xxxxxxx) ...+81-503-1329995 / 01081-503-1329995 (0503-1329995 / 0-503-1329995) +81-503-1329996 / 01081-503-1329996 (0503-1329996 / 0-503-1329996) +81-503-1329997 / 01081-503-1329997 (0503-1329997 / 0-503-1329997) +81-503-1329998 / 01081-503-1329998 (0503-1329998 / 0-503-1329998) +81-503-1329999 / 01081-503-1329999 (0503-1329999 / 0-503-1329999)