Area Code +81-55-(2830000...2839999) located in Kofu, Yamanashi (19), more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 55 Subscriber Number From : 2830000 Subscriber Number To : 2839999 National Destination Code Length : 2 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 : 19 Region Name : Yamanashi City : Kofu Timezone : Asia/Tokyo Coordinated Universal Time : +09:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 35.6600 Longitude : 138.5700 ‹ previous : +81-55-(2820000...2829999) next › : +81-55-(2840000...2849999) Dialling Instructions For trunk calls: 0 55 2830000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 55 2830000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2830000 ~ 2839999 (Count: 10,000) Example: +81-55-2830000 / 01081-55-2830000 (055-2830000 / 0-55-2830000) +81-55-2830001 / 01081-55-2830001 (055-2830001 / 0-55-2830001) +81-55-2830002 / 01081-55-2830002 (055-2830002 / 0-55-2830002) +81-55-2830003 / 01081-55-2830003 (055-2830003 / 0-55-2830003) +81-55-2830004 / 01081-55-2830004 (055-2830004 / 0-55-2830004) ...+81-55-xxxxxxx / 01081-55-xxxxxxx (055-xxxxxxx / 0-55-xxxxxxx) ...+81-55-2839995 / 01081-55-2839995 (055-2839995 / 0-55-2839995) +81-55-2839996 / 01081-55-2839996 (055-2839996 / 0-55-2839996) +81-55-2839997 / 01081-55-2839997 (055-2839997 / 0-55-2839997) +81-55-2839998 / 01081-55-2839998 (055-2839998 / 0-55-2839998) +81-55-2839999 / 01081-55-2839999 (055-2839999 / 0-55-2839999)