Area Code +81-278-(400000...409999) located in Numata, Gunma (10), more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 278 Subscriber Number From : 400000 Subscriber Number To : 409999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed 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) Region Code : 10 Region Name : Gunma City : Numata Timezone : Asia/Tokyo Coordinated Universal Time : +09:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 36.6500 Longitude : 139.0400 ‹ previous : +81-278-(330000...339999) next › : +81-278-(500000...509999) Dialling Instructions For trunk calls: 0 278 400000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 278 400000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 400000 ~ 409999 (Count: 10,000) Example: +81-278-400000 / 01081-278-400000 (0278-400000 / 0-278-400000) +81-278-400001 / 01081-278-400001 (0278-400001 / 0-278-400001) +81-278-400002 / 01081-278-400002 (0278-400002 / 0-278-400002) +81-278-400003 / 01081-278-400003 (0278-400003 / 0-278-400003) +81-278-400004 / 01081-278-400004 (0278-400004 / 0-278-400004) ...+81-278-xxxxxx / 01081-278-xxxxxx (0278-xxxxxx / 0-278-xxxxxx) ...+81-278-409995 / 01081-278-409995 (0278-409995 / 0-278-409995) +81-278-409996 / 01081-278-409996 (0278-409996 / 0-278-409996) +81-278-409997 / 01081-278-409997 (0278-409997 / 0-278-409997) +81-278-409998 / 01081-278-409998 (0278-409998 / 0-278-409998) +81-278-409999 / 01081-278-409999 (0278-409999 / 0-278-409999)