21 websites carry this Google site verification in its source code@if (Model.Total > IdentifierModel.MaxSites) { ; the 200 highest-ranked are listed }. The google-site-verification meta tag: a Search Console owner.
Which websites use the Google site verification YOUR_GOOGLE_VERIFICATION_CODE?
The 21 sites listed on this page: each has the id in its stored HTML or first-party JavaScript. The google-site-verification meta tag: a Search Console owner; sites sharing one are usually run by the same owner, agency or platform.
How was YOUR_GOOGLE_VERIFICATION_CODE found?
By reading the stored source. PageSourceSearch keeps the exact bytes of the pages and scripts it crawls and extracts the identifier from the tag's own snippet or meta tag, so every listed site can be opened at the line that carries it.