// DNS-LOOKUP
DNS Lookup Tool.
Look up A, AAAA, CNAME, MX, NS, and TXT records for any domain. Fast queries, clean output.
What is a DNS Lookup?
A DNS (Domain Name System) lookup translates a human-readable domain name like example.com into the IP addresses and other records that computers use to route traffic. DNS is often called the "phone book of the internet."
DNS Record Types
| Type | Name | Description |
|---|---|---|
| A | Address | Maps a domain to an IPv4 address |
| AAAA | IPv6 Address | Maps a domain to an IPv6 address |
| CNAME | Canonical Name | Creates an alias pointing to another domain |
| MX | Mail Exchange | Specifies mail servers for the domain, with priority values |
| NS | Name Server | Indicates which DNS servers are authoritative for the domain |
| TXT | Text | Holds arbitrary text, commonly used for SPF, DKIM, and domain verification |
How DNS resolution works
When you type a URL in your browser, your computer queries a DNS resolver (usually provided by your ISP or a public service like Google DNS at 8.8.8.8). The resolver walks the DNS hierarchy - from root servers, to TLD servers (like .com), to the domain's authoritative name servers - and returns the IP address your browser needs to connect.