- Hokkaido Electric Power Co., Inc.
- http://www.hepco.co.jp/
- NTT East Hokkaido
- http://www.hokkaido.ntt-east.co.jp/
- Hokkaido Railway Company
- http://www.jrhokkaido.co.jp/
- NTT Docomo
- http://www.nttdocomo.co.jp/hokkaido/
- KDDI Corporation
- http://www.KDDI.com/
- SOFTBANK MOBILE Corp.
- http://www.softbank.jp/mobile/
- Y!mobile
- http://www.ymobile.jp/index.html
- Japan Meteorological Agency
- http://www.jma.go.jp/jma/index.html
- Sapporo Meteorological Observatory
- http://www.jma-net.go.jp/sapporo/
- Hokkaido Prefectural Police
- http://www.police.pref.hokkaido.lg.jp/
- Northern Army, Ground Defense Force Headquarters
- http://www.mod.go.jp/gsdf/nae/index.html
- Hokkaido Official Website
- http://www.pref.hokkaido.lg.jp/
- Crisis Management Division of Department of General Affairs
- http://www.pref.hokkaido.lg.jp/sm/ktk/index.htm
- Nuclear Safety Division of Department of General Affairs
- http://www.pref.hokkaido.lg.jp/sm/gat/index.htm
- Hokkaido Landslide Advisory System
- http://www.njwa.jp/hokkaido-sabou/
- Hokkaido Medical Information System
- http://www.qq.pref.hokkaido.jp/qq/qq01.asp
- Cabinet Office Disaster Prevention Information
- http://www.bousai.go.jp/
- Ministry of Land, Infrastructure, Transport and Tourism Disaster Prevention Information Center
- http://www.mlit.go.jp/saigai/bosaijoho/
- Nuclear and Industrial Safety Agency
- http://www.nisa.meti.go.jp/
