Domain Information: [Domain Name] DIGITAL-TEXTBOOK.JP [Registrant] Digital Knowledge Co., Ltd. [Name Server] dns01.gmoserver.jp [Name Server] dns02.gmoserver.jp [Signing Key] [Created on] 2010/09/02 [Expires on] 2017/09/30 [Status] Active [Last Updated] 2016/10/01 01:05:10 (JST) Contact Information: [Name] Digital Knowledge Co., Ltd. [Email] hamada@digital-knowledge.co.jp [Web Page] [Postal code] 162-0822 [Postal Address] Shinjuku-ku 2-26 Shimomiyabi-cho Kyoudou Iidabashi Building 6F [Phone] 03-5206-5811 [Fax] 03-5206-5812