The total operability tests of doi.crossref.org from September 26, 2022, up until today is 3 over 797 days. According to the tests performed, doi.crossref.org was accessible a total of 3 times, with the most recent uptime on May 13, 2024, returning a code 200. All evaluations carried out as of December 1, 2024, confirmed that doi.crossref.org had no offline periods. No responses with error statuses were received, according to the replies as of December 1, 2024. On May 13, 2024, doi.crossref.org's response time contrasted its average, being 0.497 seconds against 0.550 seconds.