About the DNS Lookup
Use this DNS lookup tool to inspect the records currently returned for a public domain. It queries common address, mail, text, alias, and authoritative nameserver record types in one request, making it useful for deployment checks and basic DNS troubleshooting.
How to use this tool
Enter a domain name such as example.com without a path or query string, then run the lookup. The tool requests A, AAAA, MX, TXT, CNAME, and NS answers and groups the returned values by type. For a recently changed record, compare the result with the value configured at your authoritative DNS provider and allow for the record's previous TTL. Use the resolver comparison tool when you specifically need to compare answers across several public resolvers.
How to read the result
A and AAAA records map names to IPv4 and IPv6 addresses. CNAME records point one hostname at another canonical name. MX records identify mail exchangers and include preference values, where lower numbers are normally tried first. NS records identify authoritative nameservers, and TXT records carry arbitrary text used by services such as SPF and domain verification. An empty answer for one type can be valid; not every domain publishes every kind of record.
Limits and privacy
DNS answers are a point-in-time view and can vary because of caching, geography, split-horizon DNS, load balancing, or resolver policy. A successful lookup does not prove that the associated web or mail service is reachable. The submitted domain is sent to the same-origin buffer.lol API and processed only to return the requested records. Do not submit internal or sensitive hostnames.
Common questions
- Why does the lookup show an old DNS value?
- Recursive resolvers may cache the previous answer until its TTL expires. Different resolvers can update at different times after a change.
- What does an empty record section mean?
- It usually means no answer of that type was published for the queried name. It does not necessarily mean the domain is broken.