Beginning December 13, 2024, functioning of supdoc.io was checked 3 times over the next 133 days. As of April 26, 2025, supdoc.io was either inaccessible or encountering other problems during the checks. According to evaluations as of April 26, 2025, there were no periods of inactivity for supdoc.io. Code 404 was the most recent error encountered on January 13, 2025, out of 3 total responses with errors. The January 13, 2025, response contrasted, being 0.203 seconds for supdoc.io against its 0.213 seconds average.