Free DNS lookup
Look up DNS records for any domain
Enter a domain name to see its A, AAAA, CNAME, MX, NS, TXT, SOA, CAA, and SRV records, or an IP address to see its reverse DNS. We query Cloudflare's 1.1.1.1 public resolver, with Google's 8.8.8.8 as a fallback.
Try: example.com · github.com · google.com
How it works
Understanding DNS records
The Domain Name System (DNS) is the internet's phone book. It translates human-readable domain names like example.com into the IP addresses that computers use to communicate. Without DNS, you would need to remember numerical addresses for every website you visit.
DNS records are stored on authoritative nameservers and are queried every time a browser, email client, or application needs to find a server. Different record types serve different purposes, from routing web traffic (A/AAAA records) to directing email (MX records) and verifying domain ownership (TXT records).
- A
- Maps a domain to an IPv4 address
- AAAA
- Maps a domain to an IPv6 address
- CNAME
- Creates an alias pointing to another domain
- MX
- Directs email to the correct mail server
- NS
- Specifies authoritative nameservers for the domain
- TXT
- Stores text data for verification and policies (SPF, DKIM)
- SOA
- Names the zone's primary nameserver and refresh timers
- CAA
- Lists the certificate authorities allowed to issue SSL
- SRV
- Points a service like SIP or XMPP to a host and port
- PTR
- Maps an IP address back to a hostname (reverse DNS)
FAQ
DNS lookup FAQ
Common questions about DNS records and how they work.
Related guides
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Step-by-step guides on reading and using these results.
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Look up DNS records for any domain
Look up DNS records for any domain. Check A, AAAA, CNAME, MX, NS, TXT, SOA, CAA, and SRV records in real time with our free DNS lookup tool.