CysmosSiteCheck is the website check of ipv4ipv6websitetest.com, run by Cysmos, a software company in Austria. Its requests carry the User-Agent
Mozilla/5.0 (compatible; CysmosSiteCheck/1.0; +https://cysmos.bot/cysmossitecheck)
When a person enters a domain on ipv4ipv6websitetest.com, it looks up the domain's DNS records and requests its
home page (/) once over IPv4 and once over IPv6, to show whether the site works over both. It reads
only the status code and headers, not the page itself, follows no redirects and gives up after 8 seconds. It does
not follow links, log in or fill in forms, and it keeps nothing after ten minutes.
Only when someone asks for a check of that domain: two requests per check, never on a schedule. Each visitor can start a few checks per minute.
CysmosSiteCheck does not read /robots.txt: like a browser, it makes one request on a person's
demand and does not crawl. To have your domain excluded, write to us (below).
Write to bot@cysmos.email with the domain, and we stop checking it. You can also refuse requests with this User-Agent; the check then reports your site as not answering.
Questions, problems or abuse reports: bot@cysmos.email. Please include the time (with time zone) and the domain.