Checks of sleep.fm's availability have been completed 4 times since March 11, 2021, a span of 1 363 days. Responding with a code 200, sleep.fm was operational 4 times, most recently on September 18, 2021, out of every check attempted. The tests carried out as of December 3, 2024, revealed no incidents of inoperability for sleep.fm. The responses that had been received as of December 3, 2024, showed that no response had an error status. On September 18, 2021, 0.630 seconds contrasted the 0.614 seconds average response time of sleep.fm.