Over the 1 339 day period from March 20, 2021, up until today, 1 uptime checks of qdf.cn have been completed. With the last occurrence on March 20, 2021, when a code 200 was returned, qdf.cn was up 1 times out of all the checks performed. Throughout all inspections conducted as of November 18, 2024, qdf.cn experienced no periods of downtime. As of November 18, 2024, no response had indicated an error status, based on all replies received. While the average response time of qdf.cn is 5.974 seconds, it was 5.974 seconds on March 20, 2021.