21stcentury3d.com availability was analyzed 5 times during the 1 209 day period starting on August 10, 2021. All availability tests completed as of December 2, 2024, reported 21stcentury3d.com as either offline or experiencing difficulties. 100.00% of inspections performed resulted in 21stcentury3d.com being unavailable, equating to 5 occurrences, most recently on November 23, 2024. As confirmed by responses received as of December 2, 2024, there are no errors in any responses. The November 23, 2024, records indicate 21stcentury3d.com's response time of — seconds differed from its 0.001 seconds average.