Since March 2, 2021, 15 times, the sm.cn availability has been analyzed over the course of 1 491 days. Sm.cn consistently has shown functionality 15 times, with the latest recorded uptime on February 11, 2025, resulting in a code 200. Sm.cn had zero instances of inaccessibility, according to tests conducted as of April 2, 2025. Based on the responses received, it has been confirmed that there were no errors as of April 2, 2025. Data indicates sm.cn responded in 3.290 seconds on February 11, 2025, against its 4.601 seconds average.