993 Certificate error

A non-standard code ScanGov uses when a site's security certificate fails validation, so no page can be loaded over HTTPS.

  • Sites: 4831
  • Last scan: 10/9/2026
Sites returning status 993 Certificate error
Site Organization
cio.gov General Services Administration
co.becker.mn.us Becker County, MN
co.bee.tx.us Bee County, TX
evaluation.gov General Services Administration
girlshealth.gov Department of Health and Human Services
new.uno.edu University of New Orleans
opa.ca.gov State of California
scijinks.gov National Aeronautics and Space Administration
umfk.maine.edu University of Maine at Fort Kent
waynecountyutah.org Wayne County, UT