DNS Records Lookup.
See where a domain points and how its email is set up: A, AAAA, CNAME, MX, NS, TXT, SOA and CAA records, each with its TTL. Useful after you change DNS, move hosts or set up email.
100% free, no sign-up. To stop automated scanning, each browser can run up to 10 scans per tool every 3 hours; only that count is kept (privacy).
What Is a DNS Lookup?
A DNS lookup asks the Domain Name System for the records of a domain name. DNS is the internet's phone book: it turns a name such as example.com into the server address a browser connects to, and tells other mail servers where to deliver email for that name.
Each answer is a record with a type. A and AAAA records point to server addresses, CNAME points one name to another, MX names the mail servers, NS names the servers that hold the zone and TXT carries text such as SPF and verification codes. SOA holds the zone's settings, and CAA says which companies may issue SSL certificates for the domain.
This tool asks live DNS, so you see what visitors and mail servers see right now, including the TTL, which is how long other servers may keep the answer.
Every Record That Matters.
The tool asks live DNS for each record type and lists what it finds, so you see what visitors and mail servers see right now.
Where it points
A and AAAA records give the IPv4 and IPv6 addresses of the website, and a CNAME shows an alias to another name.
Email setup
MX records show which servers receive the email, and TXT records carry SPF and other email rules.
Name servers and SOA
Which servers are in charge of the domain, and the zone details such as the serial number and timers.
TTL and CAA
How long each answer can be cached, and which certificate authorities are allowed to issue certificates.
Common Problems and Fixes.
Nearly every DNS and email problem shows up in one of these records.
My website still opens on the old server
Check the TTL on the A record. Resolvers may keep the old answer until it runs out. Lower the TTL a day before a move, then change the record.
Email is not arriving
Look at the MX records. They must point to your mail provider's hosts with the right priority numbers, and an MX name must not be a CNAME.
Email goes to spam
Check the TXT records for an SPF record that lists your sending servers, and ask your provider for DKIM and DMARC records. Only one SPF record is allowed per domain.
I see two SPF records
Merge them into one. Two SPF records make receivers treat SPF as broken. Put every include and address in a single line ending in -all or ~all.
A subdomain shows nothing
The records of the main domain do not cover a subdomain. Add an A or CNAME record for that exact name, or a wildcard record.
The name servers are not my host's
If the NS records are not the ones your host gave you, your DNS changes are being made in the wrong place. Change the name servers at the registrar, then edit records at the host that now answers.
Related Free Tools.
Frequently Asked Questions
Quick answers about this tool.
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