DNS Lookup
Check a domain’s A, AAAA, CNAME, MX, NS, TXT, SOA, and CAA records with their TTLs, and see at a glance whether its email is protected by SPF and DMARC. Answers come fresh from Google Public DNS.
About the DNS Lookup
DNS turns domain names into the addresses and settings computers use. A lookup shows a domain’s records: where its website is (A), where its email goes (MX), and its verification entries (TXT).
How to use it
- 1 Enter a domain name, such as example.com, or paste a web or email address.
- 2 Read the email and security summary: MX, SPF, DMARC, CAA, and DNSSEC.
- 3 Review every record and its TTL, or copy them in zone-file format.
Frequently asked questions
How long do DNS changes take?
Usually minutes to a few hours, depending on the record’s TTL. Old values can stay cached until the TTL runs out.
What are MX records?
MX records name the mail servers that receive email for a domain, with a priority number. The lowest number is tried first.
What are TXT records used for?
For domain verification and email security, including SPF, DKIM, and DMARC records.
Why do I see different results from my own computer?
Your computer and ISP cache answers until the TTL runs out. This tool asks Google Public DNS fresh each time, so it shows the current records sooner after a change.
What should my DMARC policy be?
Start with p=none to collect reports, then move to p=quarantine and finally p=reject once only your own servers send mail. Gmail and Yahoo require a DMARC record from bulk senders.