If you've encountered domains being blocked because they are labeled as "Uncategorized," you’re not alone! This can happen for a few reasons, and it’s important to understand why it occurs and how to address it within your DNSFilter policy.

Why Do Domains Become Uncategorized?

We often see domains labeled as "Uncategorized" when:

• The domain resolves to an error page or a blank page.
• The domain doesn't contain enough content for our AI to properly categorize it.

This can be common with Content Servers and Content Distribution Networks (CDNs), which may serve resources from domains that don’t host any traditional web content. Since there isn’t enough content for our AI to scan, these domains may be flagged as uncategorized.

Impact of Blocking Uncategorized Domains

If you’ve enabled the blocking of uncategorized domains (located in Advanced -> Extra Settings of your policy), you might notice that certain domains are blocked unexpectedly, which can sometimes cause functionality issues on websites using third-party resources.

🚨 Important Note: There’s a warning with this setting that blocking uncategorized domains may disrupt the loading of some resources from third-party domains.

What You Can Do

If you believe a domain has been incorrectly labeled as "Uncategorized" and you want to keep this category blocked, we’re happy to help. You can submit a domain for manual review and re-categorization. Here’s how:

1. Log in to app.dnsfilter.com
2. Choose Domain Report
3. Enter the domain in question
4. Select Report Inaccurate Categories and provide any additional details
5. Click Submit

We’ll review the domain and make any necessary adjustments.

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Let us know if you've encountered this instance and how you managed it for your environment!