Since September 26, 2022, the operability of zeller-lab.com has been checked 4 times over the past 899 days. From the entirety of checks conducted, zeller-lab.com was operable 4 times, with the most recent occurrence on January 8, 2025, resulting in a code 200 status. No downtime incidents were reported for zeller-lab.com during inspections conducted as of March 13, 2025. Based on all replies received as of March 13, 2025, there have been no errors found in any responses. With 1.510 seconds as the average, zeller-lab.com responded in 1.091 seconds on January 8, 2025.