nist.gov

Data analysis indicates that 452 uptime tests were performed for nist.gov in the 1 756 days that followed January 31, 2021. In response, on November 13, 2025, nist.gov, which has been operational for 452 times during all conducted checks, returned a code 200. Reviews conducted as of November 22, 2025, revealed that nist.gov did not experience any instances of unavailability. No response with an error status was reported, as per replies received as of November 22, 2025. Nist.gov's 1.036 seconds reply on November 13, 2025, contrasted its 0.828 seconds average response time.