0 times in the last 0 days, from March 13, 2025, to the present, cer.sdu.edu.cn's accessibility has been checked. Throughout the evaluations conducted as of March 13, 2025, cer.sdu.edu.cn was found to be non-functional or inaccessible. Tests carried out on cer.sdu.edu.cn showed that there were no instances of inactivity as of March 13, 2025. No errors were identified in any of the obtained responses as of March 13, 2025, according to the received replies. Cer.sdu.edu.cn, on March 13, 2025, had a response time of 0 seconds, compared to its average of 0.000 seconds.