X-RAY // REP // BLOCK

FILTERING DNS BLOCKS
CHECK.

Resolve the domain on Quad9, Cloudflare 1.1.1.2 and 1.1.1.3, CleanBrowsing, OpenDNS and AdGuard and find out if it is on a malware or phishing list.

Runs only this check. For all 33 checks at once, use the full Domain X-Ray. Public lookups only; nothing is stored on the server.

BLOCK

Filtering DNS blocks

WAITING

Enter a domain above to run this check.

01 // WHAT THE CHECK VERIFIES

What the check verifies

Resolves the domain on public DNS resolvers that block malware, phishing and adult content (Quad9, Cloudflare, AdGuard, OpenDNS and CleanBrowsing) and compares with the unfiltered answer.

02 // WHY IT MATTERS

Why it matters

If the domain lands on a blocklist, people who use those resolvers, such as many companies and schools, cannot open the site, and you get no warning.

03 // HOW TO READ THE RESULT

What each result means

OK: None of the filtering DNS resolvers that answered blocks the domain.
WARNING: Blocked by an adult content filter or an ads and trackers filter.
FAIL: Blocked by a security filter (malware or phishing): people who use those resolvers cannot open the site.
NOT TESTED: The domain does not exist or has no A record to compare.
ERROR: No filtering DNS resolver answered at the moment.

ERROR and TIMEOUT mean the query did not finish (the source was down or slow), not a problem with the domain: run the check again.

04 // HOW TO FIX

How to fix

Check whether the site was compromised (injected pages, scripts or redirects), fix it and ask each service for a review on its support page. In the terminal, NXDOMAIN or 0.0.0.0 mean a block:

dig @9.9.9.9 example.com A +short
dig @1.1.1.2 example.com A +short

Would rather have someone else do it? Bit Happens can fix this →

05 // CONTINUE

More checks in Registration and reputation

Full Domain X-Ray: all 33 DNS, email, HTTPS, certificate and reputation checks at once →