What this DNS checker shows
DNS maps names to addresses and service information. A and AAAA records identify IPv4 and IPv6 addresses; MX directs mail; TXT carries text such as verification tokens and email policies. NS identifies nameservers, CNAME aliases another name, SOA contains zone information and CAA restricts certificate authorities.
How to read the results
Each answer includes its name, type, value and remaining TTL when provided. TTL is measured in seconds and describes how long that resolver can retain its cached answer. Alias lookups can contain both a CNAME and the requested address records. An empty answer is different from NXDOMAIN, which indicates that the queried name was not found.
When answers look wrong
Check the exact hostname first: example.com and www.example.com are separate names. Compare the record in your DNS provider’s panel, confirm that you edited the authoritative zone, then use the resolver comparison tool. A recent change may remain cached until its previous TTL expires. SERVFAIL can indicate DNSSEC or authoritative-server problems; it does not establish the cause by itself.