There were 3 times that cse.sn's availability was tested during the 2 134 days from January 31, 2019. On February 24, 2021, cse.sn was operational with a 200 status code response, the latest of 3 instances of uptime out of total checks conducted. Tests performed as of December 4, 2024, indicate that there was no downtime for cse.sn. As of December 4, 2024, errors in the responses that were received have not been reported. On February 24, 2021, cse.sn's 1.717 seconds response contrasted its average of 1.546 seconds.