DNS Benchmark
Does 1.1.1.1 block content?
Quick Answer
Standard Cloudflare 1.1.1.1 does not block general content categories by default; Cloudflare's filtered variants 1.1.1.2 and 1.1.1.3 are used when blocking is required.
Users often assume every major public DNS includes some form of blocking. Cloudflare’s standard resolver does not work that way.
Provider comparison
| DNS | Provider | Privacy | Speed |
|---|---|---|---|
| 1.1.1.1 | Cloudflare | High | Very Fast |
| 1.1.1.2 | Cloudflare Malware | High | Fast |
| 1.1.1.3 | Cloudflare Family | High | Fast |
| 9.9.9.9 | Quad9 | High | Fast |
Detailed explanation
Standard 1.1.1.1 is positioned as a fast, privacy-conscious resolver. If you need DNS-level enforcement, Cloudflare directs users to its filtered variants instead of changing the behavior of the default resolver.
That distinction matters when diagnosing blocked sites. If content is failing to resolve, the cause could be a family-safe resolver, local network policy, or a security product rather than 1.1.1.1 itself. For diagnosis, go to how to check if DNS is blocked. For the family-filtering variant, read what 1.1.1.3 DNS is.
FAQ
Does 1.1.1.1 block adult content?
No. Standard 1.1.1.1 does not block adult content; 1.1.1.3 is the Cloudflare family variant designed for that purpose.
Does 1.1.1.1 block malware?
Not by default. Cloudflare reserves 1.1.1.2 and 1.1.1.3 for malware-filtering use cases.
Why does a website fail on 1.1.1.1?
A failure on 1.1.1.1 is more likely related to DNS propagation, network routing, or upstream service issues than default content blocking.
Should I use filtered DNS or standard DNS?
Use standard DNS for unfiltered performance and privacy, and use filtered DNS when you need threat or category blocking at the resolver layer.
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