The following are organizations that are considered affiliated with the UW for purposes of phone services.
- Airlift Northwest
- Burke Museum Association
- Community Development Properties
- Educational Research Properties
- Fred Hutchinson Cancer Research Center
- Henry Gallery Association
- KEXP
- KUOW Puget Sound Public Radio
- Portage Bay Insurance
- Radford Court Properties
- Seattle Biomedical Research Institute
- Seattle Cancer Care Alliance
- Seattle Children’s Hospital
- Seattle Institute for Biomedical and Clinical Research (SIBCR)
- Twenty-Fifth Avenue Properties
- University Club of Seattle
- University of Washington Press
- Washington Biomedical Research Properties
- University of Washington Medicine
- Harborview Medical Center
- University of Washington Medical Center
- University of Washington School of Medicine
- University of Washington Medicine Neighborhood Clinics
- University of Washington Physicians