DNS Lookup
Explore DNS records and jump to the tool you need
A, AAAA, MX, TXT, and more tools from CuscusLab
Type a domain to check DNS records.
DNS lookup overview
The CuscusLab DNS lookup hub lets you check the most common DNS record types for any domain. Use the tabs to jump to a focused tool and see clean results with guidance.
Need easier propagation checks? Try the dedicated DNS tools built for diagnostics and latency.
What is a DNS lookup?
A DNS lookup converts a human-friendly domain name (like example.com) into a numeric IP address (like 192.0.2.10). Devices use IP addresses to talk on the internet, while DNS keeps the mapping updated as infrastructure changes.
Think of DNS like a global address book. If you need to find out who owns a domain, check the WHOIS Lookup tool instead.
What record types can be looked up?
Different DNS records power websites, email, SSL certificates, and services. Use the tools below to inspect the record type you need.
All Records
Check All Records records for any domain.
A + AAAA
Check A + AAAA records for any domain.
CAA
Check CAA records for any domain.
ALIAS (CNAME)
Check ALIAS (CNAME) records for any domain.
MAIL (MX)
Check MAIL (MX) records for any domain.
NS
Check NS records for any domain.
SOA
Check SOA records for any domain.
SERVICE (SRV)
Check SERVICE (SRV) records for any domain.
TXT
Check TXT records for any domain.
SPF
Check SPF records for any domain.
DKIM
Check DKIM records for any domain.
DMARC
Check DMARC records for any domain.
PTR
Check PTR records for any domain.
DNSSEC
Check DNSSEC records for any domain.
How does a DNS lookup work?
DNS resolution typically involves a chain of servers around the world. Each server has a role in finding the final answer.
Recursive Resolver
The resolver your device talks to. It caches records to speed up repeat lookups.
Root Nameserver
Directs the resolver to the correct TLD nameserver (like .com).
TLD Nameserver
Returns the authoritative nameservers for the domain.
Authoritative Nameserver
Stores the actual DNS records for the domain.
Example lookup flow
- 1The resolver checks its cache for the answer.
- 2If missing, it asks a root nameserver for the TLD server.
- 3The TLD server returns the authoritative nameserver.
- 4The authoritative server replies with the final record.