The availability of red.www.nsf.gov has been tested 3 times between March 28, 2026, and the present, a span of 99 days. Across all checks performed, red.www.nsf.gov experienced downtime or encountered issues as of July 5, 2026. Out of all checks, red.www.nsf.gov was inaccessible 100.00% of the time, which is 3 instances, most recently on April 13, 2026. As of July 5, 2026, all responses have been confirmed to be error-free, according to received replies. For red.www.nsf.gov, — seconds was the response time on April 13, 2026, with an average of 0.001 seconds.