Network Tools

DNS Lookup

Query DNS records like A, AAAA, CNAME, MX and more.

AIPv4 Address
AAAAIPv6 Address
CNAMECanonical Name
MXMail Exchange
NSName Server
TXTText Record
SOAStart of Authority
PTRPointer Record
SRVService Record
CAACA Authorization
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Enter domain to lookup DNS records

Supports A, AAAA, CNAME, MX, NS, TXT and other record types

What is DNS Lookup?

DNS lookup queries Domain Name System records for a domain, retrieving IP addresses and other DNS information.

DNS Record Types

  • A: IPv4 address
  • AAAA: IPv6 address
  • CNAME: Canonical name
  • MX: Mail exchange
  • TXT: Text records
  • NS: Nameservers

Use Cases

  • DNS configuration verification
  • Email troubleshooting
  • Domain migration

Frequently Asked Questions

What do A, CNAME, MX, and TXT records each control?
A points a domain at an IPv4 address, AAAA at IPv6; CNAME is an alias to another domain; MX decides which servers receive mail; TXT holds verification data (SPF, DKIM, domain ownership proofs). Server moves are A-record work, email changes are MX work, and most third-party integrations ask for a TXT record.
I changed my DNS — why is it not live yet?
Two cache layers: your OS cache and the resolver cache at your ISP or DNS provider, with the record TTL deciding how long the old value survives (commonly 600 seconds). Compare the authoritative answer (this tool can query it) with the recursive one; flushing the local cache speeds up seeing the new value.
Authoritative versus non-authoritative answers?
Authoritative answers come from the domain’s own nameservers — the current truth; non-authoritative answers come from intermediate caches and may be stale. When "the change did not take effect", check authoritative first: if it shows the new value while recursive lags, just wait out the TTL.