Going back 1 164 days starting on September 11, 2021, to today, spie.org was checked for availability 2 times total. Out of all tests, spie.org accessibility was confirmed 2 times, with September 11, 2021, being the most recent 200 status response. Throughout all evaluations done as of November 18, 2024, spie.org did not experience any offline periods. Based on the replies received as of November 18, 2024, it has been confirmed that there are no responses with error status. 2.059 seconds was the response time of spie.org on September 11, 2021, with 2.300 seconds being the average.