Lost backlinks: how to confirm a link is really gone

A lost backlink is a link that a page used to carry and no longer does. To call a link lost, you need two things: a dated check that once found it, and later checks that fully read the same page and found no link to you. Anything less is a question, not a loss.

That distinction matters because many "lost" alerts are not removals. A page that blocked the request, timed out or served a script shell tells you nothing about the link. Acting on it sends you chasing an editor who changed nothing.

What counts as a lost backlink

A backlink is lost when all three of these hold:

• An earlier check read the source page and found a link to your page.
• A later check read the whole page and found no link to your page.
• A second complete check, some time later, agrees.

AgentLinkOps applies exactly that rule. A link becomes lost only after two complete absent checks at least 30 minutes apart. One complete absent check after the link was seen marks it suspected missing, which is worth a look but not a message to anyone. The methodology page lists every state and what moves a link between them.

What does not count

Three situations look like a lost link and are not:

The last row catches many teams. If you import a list of outreach targets and check them, every page that never linked to you shows as missing on day one. None of those are lost links. AgentLinkOps keeps prospects separate from earned links for this reason, so a never-present link cannot turn into a false loss.

Find out why it disappeared

Once a check confirms the link is missing, open the page and read the saved evidence beside it. The cause decides the fix:

• The link was edited out. The page is live but no longer links to you. Ahrefs lists this as "link removed".
• The page is gone. The source returns a 404 or 410. Google drops pages that return a 4xx status from its index over time. AgentLinkOps records this as source unavailable, confirmed by its own two checks, and keeps it apart from a removed link, because the editor may restore the page.
• The page moved. The old address redirects somewhere new. Check the new page: the link may still exist there. The redirect chain guide shows how to trace it.
• Your page moved. The link still exists but points at an address of yours that now fails. That is a broken backlink, not a lost one. See broken backlinks.

A changed rel attribute, such as a link turning nofollow, is a change worth recording, and the link is still there. Nofollow, sponsored and UGC links explains what each attribute tells you.

Decide whether to ask for it back

Not every lost link is worth a request. Ask when the page still exists, still covers your topic and your page is still the best thing to cite. Skip it when the page was retired or rewritten for a different audience.

When you do ask, send the evidence: the date the link was last seen, the date it was confirmed missing and the exact page. The link reclamation checklist covers the request itself.

After the editor replies, check the page again before you mark it recovered. In AgentLinkOps a link that comes back after a confirmed loss records a placement_recovered event, so you can see the whole history in one place.

Catch losses early

Losses are easier to recover while the editor still remembers the change. Monitor the links you earn on a daily schedule, keep unknown checks out of your loss count and review confirmed losses each week. Backlink monitoring covers the full setup, and verifying a backlink still exists covers a single manual check.

Sources

1. Understanding link lost reasons · Ahrefs Help Center · 2026-10-21
2. How HTTP status codes, and network and DNS errors affect Google Search · Google Search Central · 2026-02-04