Pro move: type dmarc:yourdomain.com or blacklist:1.2.3.4 straight into the box — it switches tools for you.
About this tool. A CNAME record makes one hostname an alias of another. They're everywhere — www pointing at an apex domain, DKIM selectors pointing at your email provider. This lookup shows exactly what a name aliases to.
How to read your cname lookup results
A CNAME makes one hostname an alias for another. We follow the chain and show where it ultimately points.
A hostname with a CNAME cannot also have other records, which is why the apex of a domain usually cannot be a CNAME.
Common problems and how to fix them
A CNAME is not resolving
Make sure the target hostname exists and itself resolves. A CNAME to a dead name fails silently.
You need a CNAME at the root domain
Most DNS does not allow it. Use an A record, an ALIAS/ANAME record if your host offers one, or your CDN's flattening feature.
Common questions.What is a CNAME record?
A Canonical Name record that points one hostname to another, so both resolve to the same place.
Can the root domain be a CNAME?
Standard DNS does not allow a CNAME at the apex. Use A/AAAA records or an ALIAS-style record instead.