Enter a domain to get its Revised Authority score: a 0 to 100 measure of link-based standing, computed from the open Common Crawl web graph.
Domain Authority is Moz’s proprietary score. We don’t licence it, resell it, or estimate it — only Moz can tell you a domain’s DA. What this checker gives you instead is Revised Authority: our own 0 to 100 score, computed from the open Common Crawl web graph, with the ranks behind it shown next to the number so you can see exactly what was measured.
Common Crawl publishes a hyperlink graph covering more than a hundred million domains, and with it a harmonic centrality rank and a PageRank rank for each one. Revised Authority maps those two positions onto a 0 to 100 scale, weighted towards centrality. It answers the same question a domain authority check is usually asked — how much of the web points at this domain, and does any of it matter — from data anyone can download and check.
It is free, there is no signup, and there is no usage cap. Every result names the crawl release it came from, so a score you share today reads the same tomorrow.
Free, instant, and no signup
One number, and every rank it was built from. Here is what each part of a result means.
A 0 to 100 score built from where a domain sits in the Common Crawl web graph: its harmonic centrality rank and its PageRank rank across every domain in one crawl. Higher means more of the web points at it, from places the rest of the web points at.
Domain Authority is Moz's own score, and it is theirs. We don't licence it, resell it, or estimate it. This page gives you our number and shows the ranks it came from, so you can see exactly what is being measured.
Harmonic centrality asks how close a domain is to the rest of the web. PageRank asks how much link value flows into it. We show both raw positions next to the score, because a rank out of a hundred million domains is a fact you can check and a score is an interpretation of it.
Referring domains and backlink counts come from a third-party link index, and they carry the date they were last refreshed. They sit next to the score rather than inside it, because the score is built from the open graph and nothing else.
A domain authority checker estimates how strong a website's link profile is, usually on a 0 to 100 scale, so you can compare one domain against another. This one scores a domain from its position in the Common Crawl web graph and shows you the underlying ranks rather than only the number.
Yes. No signup, no card, no usage cap. Enter a domain and you get the score, both graph ranks, the sources we found linking in, and any backlink counts we hold.
No, and we won't pretend otherwise. Domain Authority is Moz's proprietary score and only Moz can tell you a domain's DA. The number here is Revised Authority, computed by us from the open Common Crawl web graph. It measures a similar thing — link-based standing — but it is a different score with a different scale, and the two will not match.
Common Crawl publishes a hyperlink graph of the web, including a harmonic centrality rank and a PageRank rank for every domain in the crawl. We take those two positions, map each onto a 0 to 100 scale using a log-rank curve, and weight centrality at 65 percent and PageRank at 35 percent. The release the numbers came from is shown with every result.
It means the crawl didn't record any inbound links to it, which is normal for a new, small, or private site. It is not a score of zero — a zero would say we measured the domain and found nothing, and that is a different claim. Check again after the next crawl release.
Scores move when a new Common Crawl release is imported, which happens a few times a year, and they can fall as well as rise. Between releases the number is fixed, so a result you share today reads the same tomorrow.
Expired domains often keep the links they earned, which is why an aged domain can outscore a new one on any authority metric. The Revised directory lists expired domains with their referring domains and history checked up front, if that is what you're looking for.
