Area Code +81-280-(230000...239999) located in Koga, Ibaraki (08), more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 280 Subscriber Number From : 230000 Subscriber Number To : 239999 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 : NTT East Click here to buy Japan Area Code Database Other Information Language Code : ja (Japanese) Country Number : 392 (Japan) Country Code : JP (Japan) Region Code : 08 Region Name : Ibaraki City : Koga Timezone : Asia/Tokyo Coordinated Universal Time : +09:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 36.1800 Longitude : 139.7000 ‹ previous : +81-280-(220000...229999) next › : +81-280-(280000...289999) Dialling Instructions For trunk calls: 0 280 230000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 280 230000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 230000 ~ 239999 (Count: 10,000) Example: +81-280-230000 / 01081-280-230000 (0280-230000 / 0-280-230000) +81-280-230001 / 01081-280-230001 (0280-230001 / 0-280-230001) +81-280-230002 / 01081-280-230002 (0280-230002 / 0-280-230002) +81-280-230003 / 01081-280-230003 (0280-230003 / 0-280-230003) +81-280-230004 / 01081-280-230004 (0280-230004 / 0-280-230004) ...+81-280-xxxxxx / 01081-280-xxxxxx (0280-xxxxxx / 0-280-xxxxxx) ...+81-280-239995 / 01081-280-239995 (0280-239995 / 0-280-239995) +81-280-239996 / 01081-280-239996 (0280-239996 / 0-280-239996) +81-280-239997 / 01081-280-239997 (0280-239997 / 0-280-239997) +81-280-239998 / 01081-280-239998 (0280-239998 / 0-280-239998) +81-280-239999 / 01081-280-239999 (0280-239999 / 0-280-239999)