Area Code +81-503-(5940000...5949999) 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 : 5940000 Subscriber Number To : 5949999 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-(5930000...5939999) next › : +81-503-(5950000...5959999) Dialling Instructions For trunk calls: 0 503 5940000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 503 5940000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 5940000 ~ 5949999 (Count: 10,000) Example: +81-503-5940000 / 01081-503-5940000 (0503-5940000 / 0-503-5940000) +81-503-5940001 / 01081-503-5940001 (0503-5940001 / 0-503-5940001) +81-503-5940002 / 01081-503-5940002 (0503-5940002 / 0-503-5940002) +81-503-5940003 / 01081-503-5940003 (0503-5940003 / 0-503-5940003) +81-503-5940004 / 01081-503-5940004 (0503-5940004 / 0-503-5940004) ...+81-503-xxxxxxx / 01081-503-xxxxxxx (0503-xxxxxxx / 0-503-xxxxxxx) ...+81-503-5949995 / 01081-503-5949995 (0503-5949995 / 0-503-5949995) +81-503-5949996 / 01081-503-5949996 (0503-5949996 / 0-503-5949996) +81-503-5949997 / 01081-503-5949997 (0503-5949997 / 0-503-5949997) +81-503-5949998 / 01081-503-5949998 (0503-5949998 / 0-503-5949998) +81-503-5949999 / 01081-503-5949999 (0503-5949999 / 0-503-5949999)