WhenIP Academy
How to use WhenIP DNS Lookup
The DNS Lookup modal is built for quick hostname checks when you want to confirm what a resolver should return for a name.
What you'll learn
- How to format the hostname correctly.
- Which record type to choose first.
- How to interpret empty or surprising answers.
Use a hostname, not a full URL
Enter a hostname such as example.com or www.example.com.
Do not include https://, paths, or query strings.
Pick the record type that matches your question
Use A or AAAA for address resolution.
Use MX for mail routing and TXT for verification or policy records.
Read the answer in context
Multiple answers may be normal for load balancing or redundancy.
No answer may mean the record type is absent even when other record types exist.
Pair it with other tools
If DNS looks right but the service still fails, move on to ping, traceroute, port checks, or WHOIS.
Mini FAQ
Why did I get no AAAA record?
The hostname may not publish IPv6.
Why does the site still fail when DNS is correct?
Because the issue may be the path or the application, not the name resolution.
Last updated: March 29, 2026