DNS checker: look up DNS records

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How to use this tool

1

Enter a domain

Type the domain whose DNS you want to inspect — the root domain like example.com, not a full URL.

2

Resolve the records

ns6 queries live resolvers for the domain’s A, AAAA, MX, NS, TXT and CNAME records exactly as they resolve right now.

3

Check the answers

Confirm your A and AAAA records point at the right server, your MX records match your mail host, and your TXT records for SPF and DKIM are present.

4

Fix and re-check

Edit records at your DNS host, then re-run the check to confirm the change is resolving. New records can take minutes to hours to propagate.

DNS is the address book of the internet: it maps your domain name to the servers that host your website and email. A DNS checker resolves your domain’s live records so you can confirm they’re correct and have finished propagating.

The record types do different jobs: A and AAAA point the domain at a web server’s IPv4 and IPv6 address, MX routes your email, NS delegates the domain to its nameservers, CNAME aliases one name to another, and TXT holds mail-authentication values like SPF and DKIM.

Frequently asked questions

It resolves your domain’s live DNS records — A, AAAA, MX, NS, TXT and CNAME — so you can confirm they’re correct and pointing where you expect.

An A record maps your domain to an IPv4 address and an AAAA record maps it to an IPv6 address — together they point your domain at the server that hosts your website.

MX (mail exchange) records tell the internet which servers receive email for your domain. If email isn’t arriving, mismatched MX records are a common cause.

TXT records hold text values used for verification and email authentication — SPF, DKIM and DMARC entries that prove your mail is legitimate, plus domain-ownership tokens for services like Google.

Changes can appear in minutes but may take up to 24 to 48 hours to propagate fully, depending on the record’s TTL and how resolvers cache it. Re-run the check to watch it update.

A CNAME aliases one name to another — for example pointing www.example.com at example.com — so both resolve to the same place.