In the period of 1 137 days starting October 16, 2021, sels.us's operability was inspected 2 times. According to the tests performed, sels.us was accessible a total of 2 times, with the most recent uptime on July 16, 2022, returning a code 200. As of November 27, 2024, none of the tests that were done revealed any instances of sels.us being inaccessible. As of November 27, 2024, it is evident from all received responses that no errors have been encountered. Sels.us's July 16, 2022, response time of 2.175 seconds contrasted with its average response time of 1.932 seconds.