Availability checks of old.iupac.org done over the past 1 173 days from September 18, 2021, reached 3. From the entirety of checks conducted, old.iupac.org was operable 3 times, with the most recent occurrence on December 12, 2021, resulting in a code 200 status. Assessments indicated no downtime incidents for old.iupac.org as of December 4, 2024. By the records, no responses with error status codes were reported as of December 4, 2024. On December 12, 2021, data indicates a old.iupac.org response time of 0.987 seconds, which is 1.110 seconds on average.