How to Block Ahrefs Moz and Majestic 2026

You are definitely a serious SEO expert. You probably also know that your backlink profile is your biggest asset.

But tools like Ahrefs, Moz, and Majestic constantly crawl your site day and night. They collect your data, store it in their databases, and later show that same data to your competitors.

So the real question is: if these tools don’t give you any real benefit from crawling your site, why let them take your data for free? It’s a pretty strong question.

Blocking these bots not only keeps your SEO strategy private, but also reduces unnecessary load on your server. Most importantly, it does not have any negative impact on your Google rankings.

3 Big Reasons to Block These Bots

Stop Competitor Intelligence: Your competitors can use tools like “Site Explorer” to see where your backlinks come from. If you block these bots, they’ll only see “No Data Found.”

Better Server Performance: These bots can visit your site thousands of times each month. Blocking them saves bandwidth and can improve your site speed.

Protection from Negative SEO: When your data is hidden, it becomes harder for malicious bots or competitors to target your site.

2.Technical Methods: Step-by-Step Guide

Method A: Robots.txt (The Formal Request)

This is the easiest method, but some “aggressive” bots may ignore it. Still, it’s your first line of defense.

# Stop SEO tools from stealing your data
User-agent: AhrefsBot
Disallow: /

User-agent: dotbot
Disallow: /

User-agent: MJ12bot
Disallow: /

User-agent: SemrushBot
Disallow: /

User-agent: Rogerbot
Disallow: /

Method B: .htaccess (The Hard Block)

If you are using an Apache server, this is the best method because it blocks the bot before your site even loads by returning a “403 Forbidden” error.

# Block SEO Crawlers at Server Level
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} (AhrefsBot|dotbot|MJ12bot|SemrushBot|Rogerbot|Exabot) [NC]
RewriteRule .* – [F,L]

Method C: Cloudflare Firewall (The Pro Level)

If you use Cloudflare, you can block these bots at the “edge,” meaning they are stopped before they even reach your site.

Security > WAF mein jayein.
Create a new rule: (http.user_agent contains “AhrefsBot”) or (http.user_agent contains “dotbot”) or (http.user_agent contains “MJ12bot”).
Set the action to Block.

3 Common Myths (What’s the Reality?)

Myth (Misconception)	Reality
Google rankings will drop.	False. Googlebot is not related to these bots at all.
Your site authority (DA/DR) will drop to zero.	True (partly). But these are only third-party metrics. They do not directly affect your actual Google rankings.
Blocking them is illegal.	False. You own your website, so you have full control over it and can block any bots you want.

Should You Block Moz, Ahrefs, and Semrush?

If you are working in affiliate marketing, PBNs, or any niche where competition is very high, then blocking these bots can be a smart decision.

It helps you move your strategy into “ghost mode”- where you can still rank on Google, but your competitors will never know how you are doing it.