If you've spent any time picking bookmarking sites or hunting for places to build links, you've run into two letters everywhere: DA. One list promises "high-DA sites," another sorts platforms by their score, and somewhere a tool tells you your own domain sits at a number you didn't expect. So what is Domain Authority, and how much should it actually steer your decisions?
The takeaway up front: Domain Authority is a third-party prediction of how well a site might rank — not a score Google uses, and not a guarantee of anything. It's a useful shortcut for comparing one site to another, and a terrible thing to chase blindly. Read it as a rough weather forecast, not a verdict, and it becomes genuinely handy when you're choosing where to submit your content.
What Domain Authority actually is
Domain Authority (DA) is a metric created by the SEO software company Moz. It scores a domain on a scale from 1 to 100, and it's designed to answer one narrow question: how likely is this domain to rank in search results, compared with other domains? Moz calculates it mainly from a site's backlink profile — the quantity and quality of other sites linking to it — run through a model trained to correlate with real search rankings.
That's the whole idea. DA doesn't measure how good your content is, how fast your site loads, or how much traffic you get. It's a relative estimate of link-based ranking strength, expressed as a single tidy number so you can compare Site A against Site B at a glance.
Several other companies publish their own versions of the same idea. Ahrefs has Domain Rating (DR), Semrush has an Authority Score, and Majestic offers Trust Flow and Citation Flow. They use different data and different math, so a domain can score 40 on one and 55 on another. None of them is "the real" number, because there is no official one — which brings us to the single most important thing to understand about DA.
The honest part: Google does not use Domain Authority
This is the fact that cuts through most of the confusion. Google does not use Domain Authority. DA is Moz's own metric, built by a third party, and Google has stated plainly that it has no single "authority score" for websites of the kind SEO tools sell. When a page ranks, it's Google's own systems doing the ranking, not anyone's DA number.
So why does DA matter at all? Because it's an estimate of the same thing Google cares about — a site's credibility as judged partly by who links to it. A well-built third-party metric can correlate with real ranking outcomes without being the cause of them. DA is the thermometer, not the fever. It reflects strength; it doesn't create it.
Keep that framing and you'll avoid the two classic mistakes: treating a high DA as proof a site will help you, and treating your own DA as a goal to optimize directly. You can't "raise your DA" by wishing at the number — you improve the underlying reality (earn relevant links, publish content worth linking to) and the score follows, if it follows at all.
How to read a DA score
DA runs from 1 to 100, and the scale is logarithmic, not linear. That single detail explains a lot of frustration.
Logarithmic means the distance between scores grows as you climb. Moving a new site from 10 to 20 is comparatively achievable; moving an established site from 70 to 80 is enormously harder, because the top of the scale is crowded with the most-linked domains on the internet. If your blog's DA barely moves after months of good work, that's normal — you're pushing against a curve, not a straight line.
What the bands roughly signal
Nobody should treat these as hard tiers, but as loose reference points when you're scanning a directory:
- Low band (roughly 1–20): new or lightly-linked sites. Most personal blogs and young projects live here. It's a starting point, not a failing grade.
- Middle band (roughly 20–50): established sites with a real, earned link profile. A healthy niche blog or a moderately active community platform often sits here.
- High band (roughly 50–100): large, heavily-referenced domains — major publications, big platforms, long-standing institutions. Genuinely "high-DA" sites are relatively rare.
Two cautions. First, bands drift and every tool draws them differently, so use them for comparison, not as a certificate. Second — and this matters most for bookmarking — a high DA on the domain tells you nothing about the strength of the specific link you'd get from it. A giant platform can hand out nofollow links from thin, unmoderated pages. The domain's DA is impressive; your link from it may still pass almost nothing.
DA vs Page Authority — don't confuse them
Moz publishes a companion metric, Page Authority (PA), and mixing the two causes real mistakes. DA scores the whole domain; PA scores a single page. They can diverge sharply. A well-known site (high DA) might bury your submission on a freshly-created, orphaned page with negligible PA — so the "authority" you were chasing never reaches you.
For anyone submitting to bookmarking or directory sites, PA is often the more honest signal, because the page your link actually lives on is what search engines see. A big domain number is a headline; the page your link sits on is the story.
How to use DA when choosing bookmarking and backlink sites
Here's where DA earns its keep — as one input among several, not the deciding vote. When you're comparing sites to submit to, use it like this:
- Use DA to shortlist, then verify. DA is a fast first filter for weeding out the weakest domains. But once a site clears the bar, judge it on the things DA can't see: is it moderated, is there a real audience, does anyone actually browse it?
- Check the follow status, not just the score. A high-DA site that gives every submission a
nofollowlink won't pass ranking credit — which is fine if you want discovery and referral traffic, but don't mistake it for link equity. (More on why in do social bookmarks count as backlinks.) - Weigh relevance above the number. A DA-30 community full of your exact audience out-delivers a DA-70 generic aggregator, because relevant clicks and real readers are worth more than a big domain number and dead traffic.
- Distrust suspiciously easy high-DA links. If a site hands dofollow links from a high-DA domain to any anonymous submission, ask why — that pattern is exactly what search engines have learned to discount, and it often means the number is being farmed, not earned.
- Look at approval and submission requirements. A site that vets submissions is usually one whose DA reflects a genuinely healthier profile than one that publishes anything instantly.
Used this way, DA is a triage tool: it helps you skip the obvious junk and focus your limited time on sites where a submission might actually be seen. It should never be the only reason you pick a site — earning durable links the right way is a separate craft, covered in how to get backlinks.
Common mistakes to avoid
- Chasing your own DA as a KPI. It's an output of good work, not a lever you pull. Optimize the content and the links; let the number follow.
- Assuming high DA means "will help me." The domain's strength is not your link's strength. Check PA and follow status.
- Comparing scores across tools. Moz DA, Ahrefs DR, and Semrush Authority Score aren't interchangeable. Pick one and compare like with like.
- Buying "high-DA link" packages. Manufactured links on farmed-DA domains are the fastest route to a footprint search engines ignore or penalize.
How to check a domain's DA
You can look up DA with Moz's own tools (a free browser extension and their site explorer), and comparable scores through Ahrefs, Semrush, or various free "authority checker" pages that pull from these providers. Whichever you use, check the same domain in the same tool over time rather than jumping between them — consistency matters more than the absolute figure. And remember what you're reading: an estimate, updated periodically, that approximates ranking strength. It's a compass heading, not GPS coordinates.
Frequently Asked Questions
Is Domain Authority a Google ranking factor?
No. Domain Authority is a metric made by Moz, a third-party SEO company, and Google does not use it to rank pages. It's an estimate that can correlate with ranking strength because it's built from link-profile data — but it's a prediction, not something Google references. Treat a good DA as a positive sign, never as proof a page will rank.
What is a good Domain Authority score?
There's no universal "good" number, because DA is relative and its 1–100 scale is logarithmic. A new blog often sits in the low band and an established niche site in the middle band, while genuinely high-DA sites are rare. Rather than target a figure, compare a site's DA against similar sites and against your own over time — direction matters more than the absolute score.
What's the difference between Domain Authority and Page Authority?
Domain Authority scores the strength of an entire domain, while Page Authority scores a single page on it. They can differ a lot: a high-DA site might place your submission on a weak, newly-created page with low PA. When you care about the link you actually get, Page Authority is often the more honest signal because it reflects the specific page your link lives on.
Does a high-DA bookmarking site mean I'll get a strong backlink?
Not necessarily. A domain's DA says nothing about the individual link you'd receive. Many high-DA platforms attach nofollow to submission links, so they pass little or no ranking credit — though they can still help discovery and send referral traffic. Check the follow status and how the site moderates submissions before assuming a high number means a strong link.
How can I increase my own site's Domain Authority?
You can't edit the number directly — you improve the reality it estimates. Earn relevant, credible links from real sites, publish content worth referencing, and keep your site technically healthy. Because the scale is logarithmic, early gains come faster than later ones, and progress is slow by design. Focus on durable link-building and quality; let the score follow rather than chasing it.
Next step
Domain Authority is a useful shortcut and a poor master. Use it to compare sites and skip the junk, but decide with the fuller picture: follow status, page-level strength, real audience, and relevance to your topic. That's the difference between submitting where your content gets seen and racking up links on domains nobody visits. To skip the guesswork, see the curated list of high-DA bookmarking sites — with DA bands, follow status, and submission steps compared in one place, so you spend your time only where it pays off.
