I've tried to analyse List of lighthouses in China, which contains many dead links to the now-decommissioned database "Lighthouse Directory". The site returns a boilerplate 404 but IABot doesn't seem to recognise any of the links as dead. Internet Archive contains working backups of the content e.g. https://web.archive.org/web/20160303180817/https://www.unc.edu/~rowlett/lighthouse/hkg.htm .