Google’s Undocumented Method to Disavow a Whole TLD

Overview

John Mueller of Google has indicated that an SEO can disavow a top-level domain (TLD) with the disavow file, although this has not been publicly documented. This is helpful for the sites that are flooded with spam links of TLDs. Nonetheless, most websites do not even have to resort to the disavow tool.

On March 6, 2026, Google Search Advocate John Mueller made one important revelation about Bluesky that most of the SEO community did not notice at first. Mueller replied to a question regarding the continued appearance of spam backlinks. He stated that the process of disavowing a complete top-level domain (TLD) can be done with Google in its disavow file, which was not officially documented in the official Google guidelines.

This discovery brings in an extra dimension of flexibility to the SEOs who must contend with mass link spamming. In this paper, we deconstruct what Mueller has said, how the method works, and whether you should use it or not.

What Happened? John Mueller’s Bluesky Statement

This debate started with Jacques Bouchard, who is an SEO professional and was concerned about a customer who was getting 50 spam or redirects every week. Although these links did not directly lead to the site, they were a cause of concern over the issue of possible SEO influence.

Mueller replied by explaining that although Google tends to deal with such spam automatically, one can use a disavow file in case there is any uncertainty. Notably, he notes that disavowing on the TLD level can be a feasible solution where most of the problematic links are rooted in a small number of domain extensions.

He reiterated his old position also: the disavow tool must remain a practical, but not a constant, tool of SEOs.

What Is a TLD, and Why Does It Matter for Disavow?

A top-level domain, or TLD, is the end of a web address, e.g.. xyz, .top, .info, or .tk. Some TLDs are infamous due to their association with spam farms or low-quality backlink networks. The disavowing of one URL or a domain name can deal with spam at an isolated level. TLD-level disavows can disallow all links within a domain extension, which is a faster mechanism of dealing with extensive spam.

The official Google documentation does not refer to anything beyond URL- or domain-level disavows (e.g., domain: example.com). Mueller verified that TLD-level entries exist but are undocumented. The syntax of the disavow file appears conceptually as:

domain: .xyz

This tells Google Search Console to disregard all the links on that TLD. It needs to be uploaded in a .txt file through the Disavow Links tool. The explanation by Mueller makes the SEOs know that this is experimental, but it works in the edge cases.

Should You Actually Use This?

Most of the websites do not require the disavow tool. TLD disavows apply when the number of toxic links in an individual TLD is hundreds of links, and any attempt at manual removal has been fruitless. Do not take it as a protective measure; its misuse may be more disastrous than beneficial. The disavow file is used as a fallback, as Google has algorithms such as SpamBrain to deal with most of the link spam.

Step-by-Step: How to Add a TLD to Your Disavow File

1. In Google Search Console, select ” Did you choose your property?
2. Open the Disavow Links tool
3. Download your disavow file (if you have one).
4. Open with a text editor, and append the TLD line (domain:.xyz).
5. Save as a .txt file
6. Upload via the Disavow tool
7. Allow some time, say a couple of weeks, to pass before making changes. Do not delete the file too soon.

Key Takeaways

John Mueller’s comment introduces a powerful but niche tactic for handling large-scale spam backlinks. While disavowing an entire TLD can be effective in extreme cases, it remains a last-resort option. For most websites, Google’s systems already handle link spam efficiently—making manual intervention unnecessary.

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