Who it is for
Why domain rating is the first test case in a link order
A domain rating is a 0–100 score built from how many other domains link to a site. Ours is round(100 · log(ref_domains+1) / log(2·10^7)), published in full, so you can recompute any number by hand.
Treat it as a smoke test. Fast, cheap, rough. If the vendor promised a DR 60 site and our index shows a score near 20, you have found something worth a ticket before you ever open the page. It is our own metric, comparable in spirit to Ahrefs DR or Moz DA but never the same figure.
It proves nothing alone. For that you need the referring page itself: fetch it, read the anchor, read the rel attribute. Our backlinks and refdomains actions tell you whether our crawler has seen the source domain pointing at yours, which is a useful cross-check but not a live fetch. The glossary defines each term.
The data refreshes roughly once a month. Plan for it. A link placed last Tuesday may not appear yet, and that is expected behaviour, not a failure. Plan your re-checks around it using the cost table, and see why a bought link goes missing before you accuse anyone.