What Are DA90 Backlinks?
Domain Authority is a third party estimate of how likely a site is to rank. It is not a measurement Google takes or uses. Anybody selling links by that number is selling the metric rather than the result. This guide explains why the distinction costs buyers real money.
What DA90 Actually Means
Domain Authority is a score from one to one hundred that estimates how likely a website is to rank in search results. It is calculated by a third party tool vendor rather than by Google. A DA90 backlink means a link from a site scoring ninety or above on that vendor's scale, which is a point on somebody else's measurement rather than a fact about the internet.
The scale is not evenly spaced, which is the part most buyers never learn. Moving a site from twenty to thirty is ordinary. Moving one from eighty to ninety is a different order of difficulty entirely, because the upper end of the scale is compressed. The result is that very few sites in the world sit at ninety or above.
Consider what those sites actually are. National newspapers. Universities. Government departments. Global technology brands. Major broadcasters. The kind of organisation with a legal department, an editorial policy and no commercial interest in selling a link to a plumbing firm in Bedfordshire.
That observation is worth sitting with before reading anything else on this page, because it raises the obvious question. If a genuine DA90 site is one of a very small number of properties globally, what exactly is being sold when somebody offers links from one at volume? The rest of this guide answers that. The wider subject sits in our guide to Domain Authority. The full series sits in the complete guide to backlink building.
Why Google Does Not Use It
Google has never published a site wide authority score. Its own documentation and the public statements of its search team have consistently described its systems as working on many signals rather than on a single number attached to a domain. Domain Authority is not one of those signals, because it is not Google's and Google has no access to the vendor's calculation.
What the score actually is, then, is an outside estimate of Google's behaviour. A tool vendor observes which sites rank, looks at the links pointing at them, then builds a model that predicts the pattern. The score is the output of that model. It is a forecast of an outcome rather than an ingredient in it.
The distinction matters because the entire trade in links priced by score rests on confusing the two. A barometer predicts weather reasonably well. Nobody believes that tapping the glass upward will stop the rain. Domain Authority sits in exactly that relationship to search rankings: informative to observe, useless to target.
This is also why a rising score can accompany falling visibility, which puzzles businesses that have been sold on the number. The two things are measuring different phenomena. One is a vendor's estimate of a link profile. The other is whether Google thinks your pages answer what somebody asked.
Why The Number Is Easy To Move
The score is computed from the shape of the link graph pointing at a domain. That is its only input. It has no way of knowing whether anybody reads the site, whether the pages are any good or whether a human being would trust it.
The consequence follows directly. Anything that changes the shape of that graph changes the score, whether or not the site became more useful to a single reader. A domain can accumulate a profile that the model reads as strong while remaining a place no person would ever cite. The score is not lying. It is answering the only question it was built to answer.
Two further properties weaken it as a purchase criterion. The first is that it is domain wide. A score describes the whole property, so it tells you nothing about the individual page your link would sit on. A strong domain can host pages with no readers, no editorial oversight and no visibility. Those pages carry the domain's score in a tool report while carrying none of its standing.
The second is that the vendor recalibrates. Scores shift when the model is updated or the index is refreshed, so a site can lose several points without anything at all having happened to it. A business that set a score as a target discovers it is chasing a figure that moves for reasons outside its control.
None of this makes the metric worthless. It makes it a rough comparison between two similar sites on the same day, which is a much smaller claim than the one being made when links are priced by it.
What Actually Decides Whether A Link Helps
Four things do most of the work. None of them appears on a tool dashboard as a single figure.
Relevance. Whether the linking site and the specific linking page have anything to do with your subject. A link from a modest site in your own field routinely outperforms one from a large site in an unrelated one, because the first tells a search engine something about what you do.
Placement. Where the link sits. A link inside a paragraph a reader is actually reading behaves differently from one in a footer, a sidebar or a block of links at the bottom of a page nobody reaches.
Whether the page is real and read. Does the page exist for a reason beyond hosting links. Does it get visitors. Would anybody arrive at it by any route other than a link report.
Whether it was editorially given. Did somebody decide to link to you because your page was worth pointing at. That decision is the thing a link was originally meant to represent. It remains the difference between a link that means something and one that merely exists.
These four are taken apart properly in our guide to what relevance really means in backlink evaluation, which is the page to read if you take only one thing from this cluster.
When A Genuinely Strong Site Is Worth Pursuing
It would be an overcorrection to conclude that strong sites do not matter. They do. A link from a real publication with real readers in your field is one of the most valuable things a business can obtain. Being cited by an organisation everybody in your trade recognises does genuine work.
Such a site will very often score highly. That is not a coincidence. Sites that are widely cited by others tend to accumulate the link profile the model reads as strong, so a high score frequently accompanies genuine standing.
The causation runs the wrong way from the one a buyer is invited to assume. The site is not valuable because it scores ninety. It scores ninety because it is valuable. The score is a symptom of that value rather than the source of it. A symptom is a reasonable thing to notice. It is a poor thing to purchase.
What follows practically is that the instinct to pursue strong publications is correct while the selection criterion is wrong. Choose the target because the publication matters in your field, because its readers are your customers and because a mention there would be worth having if search engines did not exist. If the score happens to be high, that is confirmation rather than justification.
What A DA90 Package Usually Turns Out To Be
This block exists to protect a buyer rather than to attack anybody selling. Given how few genuine DA90 properties exist, it is worth knowing what tends to arrive when somebody offers links from them.
The commonest arrangement relies on the score being domain wide. A link is placed somewhere on a large property that carries a high score, in a section the publication does not editorially control: a user profile, a community area, a subdomain, a document or file host, an events or classifieds section. The tool report shows the parent domain's score. The page itself has no readers and no editorial standing, so the number in the report and the value of the link have almost nothing to do with each other.
Related outcomes worth recognising. A link on a page that exists only to hold links. A page that is never crawled, so the link is never seen by anything. A link that is removed when a subscription lapses, meaning what was bought was a rental. A link on a translated or duplicated page that carries no weight of its own.
What to check before paying, in every case. Ask for the exact page address rather than the domain. Look at whether that specific page is in Google's index. Look at whether the site publishes anything that was not supplied by somebody paying to appear on it. Ask who chooses the anchor text. Ask what happens to the link if you stop paying. Ask whether you will see the placement before it goes live.
A supplier with nothing to hide answers all six in a sentence each. Our guide to the questions to ask before buying backlink services covers the rest of that conversation.
What We Would Look At Instead
We do not sell links by score and we do not supply DA90 placements, so this section is short by design rather than modesty. What our backlink services begin with instead is a diagnosis.
Before any link work is proposed, the question worth answering is whether links are the constraint at all. A great many sites asking about backlinks are held back by something else entirely: pages that do not answer the question being searched, a technical fault capping what can be indexed, perhaps a local ranking problem that links have almost no bearing on. Money spent on links in those situations buys nothing that fixing the actual constraint would not have bought more cheaply. That diagnosis is the subject of our guide to when backlinks are not the right SEO investment.
Where links genuinely are the constraint, the starting point is knowing what you already have. That means a proper look at the existing profile: what is pointing at the site, whether it is relevant, whether it was earned or arranged and what has been lost. Our guide to auditing your backlinks sets out how that is done.
Neither of those produces a number to put in a proposal, which is precisely why packages are sold by score instead. A figure is easy to promise. A diagnosis is not.
We audit first.
Then we advise.
We do not sell links by score and we do not price per link. The work begins with finding out whether links are your constraint at all, because for a great many sites they are not. If they are, the profile gets built on relevance rather than on a number.
Included every month:
One fixed monthly rate. No setup fee. No price per link.
Twenty four guides.
One subject.
This page covers the metric everybody gets sold on. The rest of the series covers what actually makes a link valuable, how to audit what you have, how Google reads unnatural patterns and when links are not the right investment at all.
