The availability of big.ac.cn has been tested 5 times between June 15, 2019, and the present, a span of 2 035 days. Analyses reveal big.ac.cn had 5 instances of uptime from checks conducted, the latest on June 15, 2019, with a 200 code. Based on all the checks made as of January 10, 2025, no offline periods were observed for big.ac.cn. There hasn't been an error status code reported in any of the responses as of January 10, 2025. The 1.450 seconds response time noted for big.ac.cn on June 15, 2019, differed from its 1.500 seconds average.