Area Code +81-503-(4430000...4439999) 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 : 4430000 Subscriber Number To : 4439999 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-(4420000...4429999) next › : +81-503-(4440000...4449999) Dialling Instructions For trunk calls: 0 503 4430000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 503 4430000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4430000 ~ 4439999 (Count: 10,000) Example: +81-503-4430000 / 01081-503-4430000 (0503-4430000 / 0-503-4430000) +81-503-4430001 / 01081-503-4430001 (0503-4430001 / 0-503-4430001) +81-503-4430002 / 01081-503-4430002 (0503-4430002 / 0-503-4430002) +81-503-4430003 / 01081-503-4430003 (0503-4430003 / 0-503-4430003) +81-503-4430004 / 01081-503-4430004 (0503-4430004 / 0-503-4430004) ...+81-503-xxxxxxx / 01081-503-xxxxxxx (0503-xxxxxxx / 0-503-xxxxxxx) ...+81-503-4439995 / 01081-503-4439995 (0503-4439995 / 0-503-4439995) +81-503-4439996 / 01081-503-4439996 (0503-4439996 / 0-503-4439996) +81-503-4439997 / 01081-503-4439997 (0503-4439997 / 0-503-4439997) +81-503-4439998 / 01081-503-4439998 (0503-4439998 / 0-503-4439998) +81-503-4439999 / 01081-503-4439999 (0503-4439999 / 0-503-4439999)
