The total uptime checks of columbia.edu performed in the 1 391 days from January 27, 2021, reached 10. Out of every uptime test completed, columbia.edu was accessible 9 times, most recently evidenced by the 200 status response on November 29, 2022. As of November 18, 2024, checks revealed that columbia.edu had no service interruptions. The latest error, coded as 403, occurred on November 15, 2024, among 1 responses containing errors. In contrast to the average of 1.953 seconds, columbia.edu's response time on November 15, 2024, was 0.190 seconds.