Going back 1 165 days starting on September 11, 2021, to today, spie.org was checked for availability 4 times total. Out of all tests, spie.org accessibility was confirmed 4 times, with November 19, 2024, being the most recent 200 status response. Throughout all evaluations done as of November 20, 2024, spie.org did not experience any offline periods. Based on the replies received as of November 20, 2024, it has been confirmed that there are no responses with error status. 5.285 seconds was the response time of spie.org on November 19, 2024, with 3.236 seconds being the average.