A strong backlink profile can help your site earn authority, rankings, and referral traffic. But not every link is useful. Some backlinks come from hacked sites, spam directories, link farms, scraped pages, or irrelevant networks that exist only to manipulate search engines. Ahrefs is one of the best tools for finding suspicious backlinks, reviewing them in context, and preparing a clean disavow file when removal is not realistic.
TLDR: Use Ahrefs to audit your backlink profile, identify suspicious patterns, and separate genuinely harmful links from harmless low-quality noise. Focus on signals like irrelevant domains, spammy anchor text, sitewide links, no traffic, and obvious link schemes. Only disavow links you are confident are manipulative or risky, especially if you have a manual action or a history of unnatural link building. Export your final list, format it correctly, and submit it through Google’s Disavow Tool.
What Are Toxic Backlinks?
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Toxic backlinks are links that may harm your site’s trust because they appear unnatural, manipulative, or associated with spam. They are not simply “low authority” links. A small blog with low metrics is not automatically toxic. The real concern is whether a link looks like it was created to deceive search engines.
Common examples include:
- Links from spam networks with thin content, autogenerated pages, or irrelevant outbound links.
- Paid links that pass ranking value and are not marked with
rel="sponsored"ornofollow. - Overoptimized anchor text, especially commercial phrases repeated across many domains.
- Hacked site links hidden in footers, widgets, or unrelated pages.
- Foreign language links from irrelevant sites with no logical connection to your business.
Google is usually good at ignoring spammy links, so disavow should not be your first reaction to every questionable backlink. Think of it as a precision tool, not a broom.
Image not found in postmetaStep 1: Open Your Backlink Profile in Ahrefs
Start in Ahrefs Site Explorer. Enter your domain, choose the correct mode, and open the Backlinks and Referring domains reports. These two sections give you different views of the same problem: individual URLs linking to you and the domains those links come from.
For toxic backlink research, the Referring domains report is usually the better starting point. If one spam site links to you from 2,000 pages, you generally want to evaluate the domain rather than inspect each URL one by one. This saves time and helps you spot patterns faster.
Pay close attention to these Ahrefs metrics and columns:
- DR: Domain Rating can help prioritize review, but do not rely on it alone.
- Traffic: Sites with no estimated organic traffic may deserve closer inspection.
- Linked domains: A site linking out to thousands of unrelated domains can be suspicious.
- Anchor and target URL: These show how and where the site links to you.
- First seen: Sudden bursts of links can reveal negative SEO or old campaigns.
Step 2: Filter for Suspicious Patterns
Ahrefs filters make the audit much easier. Instead of scrolling through every backlink, create smaller groups that are likely to contain problems.
Useful filters include:
- Dofollow links: Prioritize links that may pass ranking signals.
- Low traffic domains: Combine this with manual review to find dead or spammy websites.
- Anchor text filters: Search for money keywords, casino terms, adult terms, pills, or unrelated phrases.
- Language or country mismatch: Useful when you see many links from irrelevant regions.
- New backlinks: Helpful for identifying sudden suspicious link spikes.
The Anchors report is especially valuable. If you notice an unnatural number of links using exact-match commercial phrases like “buy cheap running shoes” or “best injury lawyer,” investigate those referring domains. Natural backlink profiles usually include branded anchors, URL anchors, and varied phrasing.
Step 3: Manually Review Before Labeling a Link Toxic
This is the step many site owners skip, and it is where costly mistakes happen. Ahrefs can surface risk signals, but it cannot fully understand context. Before adding a backlink to your disavow list, open the linking page and inspect it.
Ask yourself:
- Does the page have real content, or is it thin and autogenerated?
- Is your link relevant to the page topic?
- Is the site full of unrelated outbound links?
- Does the anchor text look natural?
- Is the link hidden, injected, or placed in a suspicious footer or sidebar?
- Does the domain appear hacked, abandoned, or built only for link selling?
If the answer is clearly negative across several of these questions, the backlink may be a good disavow candidate. If the link is simply from a small, low-traffic, legitimate website, leave it alone.
Step 4: Decide Whether to Disavow the URL or Domain
When you find a bad backlink, you need to decide whether to disavow a specific URL or the entire domain. In most spam cases, domain-level disavow is cleaner because spam sites often create many pages or move links around.
Use URL-level disavow when only one page is problematic but the overall website is legitimate. For example, if a real community forum has one spam profile page linking to you, disavowing the entire domain could be unnecessary. Use domain-level disavow when the entire site is a link farm, hacked domain, scraper network, or irrelevant spam source.
A domain-level entry looks like this:
domain:example-spam-site.comA URL-level entry looks like this:
https://www.example.com/spam-page.htmlStep 5: Build and Organize Your Disavow List
You can export backlinks or referring domains from Ahrefs and manage your review in a spreadsheet. Create columns such as domain, linking URL, anchor text, target URL, reason, and decision. This gives you a record of your thinking and helps prevent accidental disavow of useful links.
Good reasons might include:
- Hacked page with hidden anchor text
- Spam directory with unrelated outbound links
- Paid link network from previous SEO campaign
- Exact-match anchor text across multiple low-quality domains
Do not add comments that are too long or messy in the final disavow file. Google allows comments if each comment line begins with #, but the file itself should remain simple and clean.
Step 6: Try Removal When It Makes Sense
Google recommends trying to remove bad links before disavowing, especially if you are dealing with a manual action. In practice, removal is often difficult. Spam sites rarely respond, and some may even demand payment, which you should avoid.
Still, if the backlink came from a real website, former partner, old agency placement, or guest post you control, reach out and request removal or a nofollow attribute. Keep a record of outreach attempts. This documentation can be useful if you need to submit a reconsideration request after a manual penalty.
Step 7: Format and Submit the Disavow File
Your final disavow file must be a plain text file encoded in UTF-8 or 7-bit ASCII. Each line should contain one URL, one domain directive, or one comment. Keep it focused on links you are confident are risky.
Example:
# Disavow file created after Ahrefs backlink audit
domain:spamdirectoryexample.com
domain:badlinknetworkexample.net
https://example-spam-site.com/bad-page.htmlSubmit the file through Google’s Disavow Links Tool in Search Console. Be careful to choose the correct property. If you already have a disavow file uploaded, download it first and merge your new entries into the existing file. Uploading a new file replaces the old one.
Step 8: Monitor Results Over Time
Disavow is not instant. Google needs to recrawl the web and reprocess the links. You may not see any visible change for weeks or months, and rankings may not jump simply because you uploaded a file. The goal is risk reduction, not quick growth.
Continue monitoring your backlink profile in Ahrefs. Check New backlinks regularly, review anchor text changes, and watch for unusual spikes. If you recently ended an old link-building campaign or recovered from a manual action, schedule backlink audits every month for a while. Otherwise, quarterly audits are often enough.
Final Thoughts
Ahrefs is powerful because it helps you move from guessing to structured backlink analysis. The best workflow is simple: find suspicious patterns, manually inspect the links, document your decisions, and disavow only what is clearly manipulative or dangerous. A clean backlink profile is not about deleting every imperfect link. It is about protecting your site from links that were never earned, never relevant, and never meant to help real users.
