A year ago, I reported that the Google Search Console’s URL inspection tool can show a nofollowed link as the referring page. But it also seems that the URL inspection tool can also show non-linked URLs as the referring page.
At first I thought that maybe the URL was linked to and then the link was removed but Dave Smart also noticed this and said on Mastodon, that the URL inspection tool referring page has done this “for a while.” “I guess it makes sense if that is indeed one of the places they found a reference to your URL and used that for discovery,” he added.
I posted some examples on Mastodon:
Here is the example of the non-linked reference I found – it is not hyperlinked and the URL has spaces in it as well, so Google picked it up as a 404 since the URL was pasted and broken in the forum thread:
Here is the Google Search Console URL inspection tool showing this URL as a referring page:
Dave Smart also shared an example, here is the non-linked URL in a web page:
