To check if backlinks are active, use a backlink audit tool like Ahrefs, Semrush, or Google Search Console to crawl your link profile, filter by HTTP status code, and identify any links returning 404, 301, or no-index signals. Studies show that up to 66.5% of links built in the last nine years have since disappeared, making regular backlink monitoring essential for maintaining search rankings and domain authority.
Why Link Decay Is the Most Underrated SEO Problem
Most SEO teams invest significant time and budget into building backlinks — then never look at them again. Link decay is the gradual loss of backlinks over time due to page deletions, site migrations, CMS updates, or domain expirations. According to Ahrefs research, the average web page loses approximately 5–10% of its referring domains every year. For a site with 500 backlinks, that translates to 25–50 lost links annually — each one silently eroding your rankings.
The compounding effect is what makes this dangerous. After three years of neglect, a link profile built through outreach, guest posting, and digital PR can lose 15–30% of its total value. Meanwhile, competitors who maintain their profiles pull ahead. If you want to protect your investment, you need a systematic process to check if backlinks are active on a recurring schedule.
How to Audit Your Backlinks: A Step-by-Step Process
Running a backlink audit doesn't have to take days. With the right tools and a clear workflow, you can check if backlinks are active across your entire profile in under two hours. Here's the systematic approach that experienced SEO practitioners follow.
Step 1: Export Your Full Backlink Profile
Start by pulling a complete list of your referring domains and backlinks. Use one or more of these tools:
- Ahrefs Site Explorer — Export all backlinks with HTTP status, anchor text, and referring page URL. Plans start at $99/month.
- Semrush Backlink Audit — Flags toxic, lost, and broken links automatically. Plans start at $129.95/month.
- Google Search Console — Free. Shows your top linking sites and pages, though it lacks status-code filtering.
- Moz Link Explorer — Provides spam score alongside link status. Free tier allows 10 queries per month.
For most sites with under 10,000 backlinks, a single tool export is sufficient. Enterprise sites should cross-reference at least two data sources for completeness.
Step 2: Filter and Classify by Status
Once you have your export, sort links into three categories:
- Live (200 OK) — The link exists and passes equity. No action needed.
- Redirected (301/302) — The link may still pass partial value, but verify the redirect destination. A 301 chain of three or more hops dilutes link equity significantly.
- Dead (404/410/500) — The link is gone. These are your priority targets for reclamation.
Industry benchmarks suggest that a healthy backlink profile should have fewer than 8% dead links at any given time. If you're above 15%, your profile needs immediate attention.
Step 3: Check for No-Index and No-Follow Changes
A link can return a 200 status and still provide zero SEO value. Some webmasters add rel="nofollow" or rel="ugc" attributes after initially linking to you. Others add no-index directives to entire sections of their site. Tools like Screaming Frog (free for up to 500 URLs) let you crawl specific referring pages and check these attributes in bulk.
What to Do When Backlinks Are Dead or Lost
Finding dead backlinks is only half the job. The real value comes from reclaiming them. Here's a prioritized action plan based on the type of loss.
How Do You Reclaim a Lost Backlink?
For each dead link, follow this decision tree:
- Page removed on linking site: Email the site owner or editor. Reference the original content, explain the broken link, and suggest they restore it or point it to your updated URL. Reclamation outreach has a 5–15% success rate according to a 2023 survey by Authority Hacker, but each recovered high-DR link can be worth hundreds of dollars in equivalent link-building cost.
- Your URL changed: If you migrated content or changed your URL structure, implement 301 redirects from the old URL to the new one. This preserves existing link equity with minimal loss.
- Linking domain expired: If the entire domain is dead, there's nothing to reclaim. Remove it from your tracking list and focus efforts elsewhere.
- Link attribute changed to nofollow: Reach out to the webmaster and politely ask whether the change was intentional. In many cases, site-wide CMS updates accidentally apply nofollow to all external links.
Best Outreach Template for Backlink Reclamation
Keep your reclamation emails concise and helpful:
- Subject line: "Broken link on [Page Title]"
- Body: Identify the specific broken URL, explain why the linked resource is still relevant, and provide the correct replacement URL.
- Tone: Helpful, not demanding. You're solving a problem for the webmaster, not asking a favor.
Send a single follow-up after 7 days if there's no response. Beyond that, move on — there are always more links to reclaim.
How Often Should You Check If Backlinks Are Active?
The right audit frequency depends on your site's size and link-building velocity:
- Small sites (under 200 backlinks): Quarterly audits are sufficient. Set a calendar reminder every 90 days.
- Mid-size sites (200–2,000 backlinks): Monthly spot-checks of your top 50 referring domains, with a full audit every quarter.
- Large sites (2,000+ backlinks): Automated weekly monitoring using Ahrefs Alerts or Semrush's lost-link notifications. At this scale, manual checks are impractical.
Grid13, specializing in AI-powered SEO and GEO content optimization for businesses, recommends integrating backlink health checks into your broader content maintenance workflow. A backlink audit pairs naturally with content refresh cycles — when you update a post, verify its inbound links at the same time.
Essential Tools to Monitor Backlink Health
No single tool does everything perfectly. Here's a practical toolkit comparison for teams that want to check if backlinks are active efficiently:
- Ahrefs — Best for comprehensive backlink data. Lost/new link reports update daily. DR metrics help prioritize reclamation. Pricing: $99–$999/month.
- Semrush Backlink Audit — Best for toxic link identification and automated monitoring. Pricing: $129.95–$499.95/month.
- Screaming Frog — Best for custom crawls of specific referring pages. Checks HTTP status, robots directives, and link attributes. Free for up to 500 URLs; £199/year for full version.
- Google Search Console — Free. Limited data but useful as a baseline. Check the "Links" report monthly.
- Monitor Backlinks — Budget-friendly dedicated monitoring tool. Sends email alerts when links are lost. Pricing starts at $25/month.
For most marketing teams managing 500–5,000 backlinks, a combination of Ahrefs for discovery and Screaming Frog for verification covers 95% of audit needs.
Building a Sustainable Backlink Maintenance System
The teams that consistently rank well don't just build links — they protect them. Here's a simple maintenance framework:
- Track your top 100 links in a spreadsheet or project management tool. Include referring URL, target URL, DR/DA score, last-checked date, and status.
- Set up automated alerts in Ahrefs or Semrush for lost backlinks. React within 48 hours for high-value links (DR 50+).
- Run a full audit quarterly and document findings. Track your reclamation success rate over time — aim to recover at least 10% of lost links per cycle.
- Coordinate with content updates. When you refresh a blog post, check its backlink profile simultaneously. Updated content gives you a stronger pitch for reclamation outreach.
- Archive permanently lost links. Don't waste time chasing links from expired domains or sites that have fundamentally changed their content strategy.
Frequently Asked Questions
How do I check if my backlinks are still active?
Export your backlink profile from Ahrefs, Semrush, or Google Search Console. Filter by HTTP status code — links returning 404, 410, or 500 errors are dead. Cross-check with Screaming Frog to verify nofollow or noindex changes on the referring page.
What percentage of backlinks are typically lost each year?
Research shows websites lose approximately 5–10% of their referring domains annually. Over a five-year period without maintenance, a link profile can lose 25–50% of its original value through natural link decay.
What is the best free tool to check backlink status?
Google Search Console is the best free option for basic backlink monitoring. For more detailed status-code checking, Screaming Frog's free version handles up to 500 URLs and can crawl individual referring pages to verify link attributes.
How long does a backlink audit take?
For sites with under 1,000 backlinks, a thorough audit takes 1–2 hours using Ahrefs or Semrush. Larger profiles with 5,000+ links may require 4–6 hours, or you can automate ongoing monitoring with alert-based tools.
What should I do if a high-value backlink is lost?
Contact the linking site's webmaster within 48 hours. Reference the original content, explain the broken link, and provide the correct replacement URL. If your own URL changed, implement a 301 redirect immediately to preserve link equity while you pursue reclamation.
Backlink maintenance isn't glamorous, but it directly protects the rankings you've worked hard to earn. Start with a quarterly audit of your link profile, set up automated alerts for your highest-value links, and build reclamation outreach into your regular SEO workflow. If you're looking for a way to integrate backlink health monitoring with your broader content strategy, Grid13's AI-powered platform helps businesses maintain and grow their organic visibility systematically — so nothing falls through the cracks.