Furukawa System Design

Japan-based services

Aliases / services: フルカワシステムデザイン / Furukawa System Design / Dynamic DO!.jp / DDO / 古川清
Official website: https://ddo.jp/

Each response applies only to its stated service scope. “Not listed” does not mean unpatched or unaffected.

Response status by service

Listed services and systems

Response status: Web service resumed after updated PHP installation
Response information checked: 2026-10-27 Rechecked: 2026-10-27

Dynamic DO!.jp dynamic DNS operated by Furukawa System Design, represented by Kiyoshi Furukawa.

The web server was suspended from October 21 at 22:40 to October 22 at 09:00 while updated PHP was installed. DNS continued, but changed IP addresses could not be registered during that period.

What users should do

If your IP address changed during the suspension, check and update its registration.

Official service URL

https://ddo.jp/

Source URLs

PHP2Shell response and scopehttps://ddo.jp/obstacle.php?free=onResponse evidence
Operating entityhttps://ddo.jp/info.phpService and operation documentation

Related official sources

PHP2Shell response and scopeOfficial notice
Operating entityOfficial information directory