Area Code +81-503-(1250000...1259999) 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 : 1250000 Subscriber Number To : 1259999 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-(1240000...1249999) next › : +81-503-(1260000...1269999) Dialling Instructions For trunk calls: 0 503 1250000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 503 1250000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 1250000 ~ 1259999 (Count: 10,000) Example: +81-503-1250000 / 01081-503-1250000 (0503-1250000 / 0-503-1250000) +81-503-1250001 / 01081-503-1250001 (0503-1250001 / 0-503-1250001) +81-503-1250002 / 01081-503-1250002 (0503-1250002 / 0-503-1250002) +81-503-1250003 / 01081-503-1250003 (0503-1250003 / 0-503-1250003) +81-503-1250004 / 01081-503-1250004 (0503-1250004 / 0-503-1250004) ...+81-503-xxxxxxx / 01081-503-xxxxxxx (0503-xxxxxxx / 0-503-xxxxxxx) ...+81-503-1259995 / 01081-503-1259995 (0503-1259995 / 0-503-1259995) +81-503-1259996 / 01081-503-1259996 (0503-1259996 / 0-503-1259996) +81-503-1259997 / 01081-503-1259997 (0503-1259997 / 0-503-1259997) +81-503-1259998 / 01081-503-1259998 (0503-1259998 / 0-503-1259998) +81-503-1259999 / 01081-503-1259999 (0503-1259999 / 0-503-1259999)