Pro move: type dmarc:yourdomain.com or blacklist:1.2.3.4 straight into the box — it switches tools for you.
About this tool. NS records name the servers that hold your domain's DNS zone — every other record depends on them. This lookup lists your nameservers, resolves them, and identifies the DNS host behind them.
How to read your ns lookup results
NS records list the nameservers that are authoritative for the domain, meaning they hold the real answers.
These should match what your registrar shows. A mismatch means DNS changes may not take effect.
Common problems and how to fix them
DNS changes are not taking effect
Confirm these nameservers match the ones set at your registrar. If they point at an old provider, updates you make elsewhere are ignored.
Common questions.What is an NS record?
It names the servers responsible for answering DNS queries for a domain.
Where do I change my nameservers?
At your domain registrar, not in the DNS zone itself. The zone lives on whichever nameservers the registrar points to.