Area Code +81-503-(0970000...0979999) 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 : 0970000 Subscriber Number To : 0979999 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-(0960000...0969999) next › : +81-503-(0980000...0989999) Dialling Instructions For trunk calls: 0 503 0970000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 503 0970000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 0970000 ~ 0979999 (Count: 10,000) Example: +81-503-0970000 / 01081-503-0970000 (0503-0970000 / 0-503-0970000) +81-503-0970001 / 01081-503-0970001 (0503-0970001 / 0-503-0970001) +81-503-0970002 / 01081-503-0970002 (0503-0970002 / 0-503-0970002) +81-503-0970003 / 01081-503-0970003 (0503-0970003 / 0-503-0970003) +81-503-0970004 / 01081-503-0970004 (0503-0970004 / 0-503-0970004) ...+81-503-xxxxxxx / 01081-503-xxxxxxx (0503-xxxxxxx / 0-503-xxxxxxx) ...+81-503-0979995 / 01081-503-0979995 (0503-0979995 / 0-503-0979995) +81-503-0979996 / 01081-503-0979996 (0503-0979996 / 0-503-0979996) +81-503-0979997 / 01081-503-0979997 (0503-0979997 / 0-503-0979997) +81-503-0979998 / 01081-503-0979998 (0503-0979998 / 0-503-0979998) +81-503-0979999 / 01081-503-0979999 (0503-0979999 / 0-503-0979999)