Free Domain Authority Checker (DA, PA and MozRank)

What domain authority is, and what it is not

Domain Authority (DA) is a metric created by Moz and scored from 1 to 100 from Moz's own link index. It predicts how likely a domain is to rank compared with other domains. It is comparative, not absolute: a DA of 40 is strong in a niche where competitors sit at 25 and weak where they sit at 70. The scale is logarithmic, so moving from 20 to 30 takes far fewer new links than moving from 70 to 80.

• Not a Google ranking factor. Google has no domain authority score and does not use Moz's, Ahrefs' or anyone else's; its representatives have said so many times.
• Not a measure of traffic or content quality. It summarises links only.
• Not fixed. Since Moz rebuilt the metric in 2019, DA is modelled against real Google results, so it can move when Moz recalibrates even if nothing changed on your site.
• Not portable. Ahrefs, Semrush and others publish their own scores from their own crawls, and none converts into another.

Authority scores correlate with rankings because sites with more trusted referring domains tend to rank better, but a high score never ranks a weak page, and a site with a lower score often outranks a stronger one on a topic it covers better. Google weighs links in its own way, mostly page by page, alongside relevance, content quality, page experience and many other signals, and it discounts links it judges to be spam or paid.

MozRank and the Moz rank checker: what they show today

MozRank was Moz's old 0 to 10 link popularity score, modelled on Google's original PageRank, with MozTrust as its trust-weighted twin. Moz retired both when it moved to its new link index and Link Explorer, so no tool can show a current MozRank, and a page that still prints one is showing stale data or a different metric under the old name. Domain Authority and Page Authority took their place.

So what does a moz rank checker or mozrank checker show today? Usually Moz's DA and PA, read through Moz's API, or a vendor's own score. Our old mozrank-checker, moz-score-checker and alexa-rank-checker pages now point here, because the question behind each of them is "how strong is this website", which referring domains and a link-based score answer. Alexa's traffic rank is gone too: Amazon shut Alexa.com in May 2022.

Looking for a moz rank tracker? If you mean watching a site's authority over time, check it here once a month and note the referring domains, which move before any score does. If you mean tracking where your pages rank on Google for a keyword, use the Keyword Position Checker.

PA checker: page authority explained

Page Authority (PA) is Moz's page-level twin of DA: the same 1 to 100 prediction, made for one URL from the links pointing to that page rather than to the whole domain. A strong domain can hold weak pages, and a new page on a weak domain can earn a high PA if it attracts links of its own.

This checker scores domains, not single pages. To see the links behind one of your own pages, open the Links report in Google Search Console and look at the top linked pages; for any page on the web, Moz Link Explorer shows its PA with a free Moz account. To lift a page, earn links to that page itself and link to it from your own strongest pages.

Website authority checker: what this tool measures

"Website authority" is not one official number, so this checker shows the parts you can act on. The link-based rank (0 to 1000) comes from a commercial SEO data index and is shown next to the referring domains, backlinks and referring IPs behind it. Compare it only with other domains checked here. Then come five trust signals we check ourselves:

• HTTPS: whether the homepage loads over HTTPS with a valid certificate.
• Response time: how long the homepage took to load from our server, redirects included.
• Structured data: whether the homepage carries schema.org markup, such as Organization or LocalBusiness.
• Indexable homepage: whether a noindex tag or header hides it from search engines.
• Domain age: the registration date from WHOIS or RDAP. Age alone does not rank a site; an older domain has simply had more time to earn links.

For up to ten domains at once, the Bulk Domain Authority Checker puts them in one table, and the Backlink Checker shows the full detail behind the number: dofollow and nofollow links, anchors, countries and link types.

DA vs DR vs AS: Moz, Ahrefs and Semrush scores compared

Each vendor builds its own link index and formula, so the same site gets a different number from each one. This table tells you which score you are looking at.

None of them converts into another, and Google uses none of them. Compare sites with one score only, and watch the number of referring domains, which moves before any score does.

How to raise domain authority honestly

The score follows the number and quality of independent websites that link to you, so everything that earns those links raises it. A sensible order:

1. Publish pages worth citing: original data, genuinely useful guides and free tools.
2. Get listed where your industry already looks, and answer journalist requests from real experience. The Backlink Opportunity Finder lists these sources for your niche and country.
3. Ask suppliers, partners and customers for a mention, and turn unlinked brand mentions into links.
4. Redirect old pages that still have links pointing to them, so their value reaches a live page.
5. Work through the relevant entries in our list of 1000+ dofollow backlink sites a few at a time, filled in properly.

Avoid bought links, link networks and automated link generators: they add nothing to the score and can bring a manual action. Scores update slowly, so compare months, not weeks, and check the referring domain count with the Backlink Checker, because it moves first. If you would rather hand the work over, our SEO service runs it as white-hat outreach with a monthly report of every link earned.