X-RAY // DNS // DNS

DNS RECORDS
CHECK.

See the IPs (A and AAAA), the CNAME, the TTL and the SOA serial of a domain, and understand NXDOMAIN and SERVFAIL. Free online check, no sign-up.

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.

DNS

DNS records

WAITING

Enter a domain above to run this check.

01 // WHAT THE CHECK VERIFIES

What the check verifies

Queries the basic records of the domain: IPv4 (A) and IPv6 (AAAA) addresses, aliases (CNAME) and the SOA, which identifies the primary server and the zone serial number.

02 // WHY IT MATTERS

Why it matters

Without A or AAAA the site does not open by name. The SOA serial helps confirm whether a change has already reached public DNS.

03 // HOW TO READ THE RESULT

What each result means

OK: The domain publishes at least one A or AAAA address, directly or through a CNAME.
FAIL: The resolver answered NXDOMAIN (the name does not exist in DNS) or SERVFAIL (a broken zone or a DNSSEC signature that does not match).
INFO: There is no A or AAAA on the name itself. That is normal when the domain is only used for email or when the site lives only on www.

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

In the DNS provider panel, publish an A record (IPv4) and, if the server has one, an AAAA (IPv6) on the root name (@). To check from outside, without a local cache:

dig +short A example.com @1.1.1.1
dig +short AAAA example.com @1.1.1.1
dig SOA example.com +noall +answer

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

05 // CONTINUE

More checks in DNS and name servers

Guide: How to troubleshoot DNS →

Open in DNS Lookup →

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