Starting February 20, 2021, hej.sk's availability was tested 7 times over the following 1 367 day period. Hej.sk maintained operational status in 7 instances during all checks, responding with a code 200 in its latest recorded uptime on March 28, 2024. Tests show that as of November 18, 2024, there had been no instances of hej.sk's inoperability. As a result of the replies received as of November 18, 2024, it was confirmed that none of them had error status. On March 28, 2024, hej.sk had an average response time of 0.229 seconds and responded in 0.063 seconds.