Start with the name on the poster
If a bookmarked address fails, recover the movie name from its link or your browser history. Search the name here, then compare the year and premise. Those details are more useful than repeatedly changing the end of a website address.
One catalog, several ways people search
1HD.to, 1HD.gg, 1HD.sh, 1HD.art and 1HD.biz appear in searches for the brand. This page does not establish that those addresses share an operator or point to a current mirror. The catalog you have open provides its own movie and television listings.
A page error or a network error?
Test the home page when a deep link fails. If other websites fail too, check the connection before hunting for another address. A country selector changes regional viewing choices, not network restrictions.
Keep a recoverable bookmark
Save the production title and year with the bookmark. For television, include the season or last episode in a note. The next time you search, you can return to the story even if an older link has changed.