Tool
DNS Lookup
A guide to querying DNS records without confusing technical presence with legitimacy.
What to observe
DNS queries may reveal A, AAAA, MX, TXT, CNAME, and NS records. These records help explain hosting, email, and domain delegation.
Limits
The presence of SPF, DKIM, or DMARC does not guarantee that a message is legitimate. Likewise, a domain with HTTPS and working DNS may still host fraud.
Local tools
The dig, host, and nslookup commands allow queries without depending on third-party websites. Always verify that querying is permitted in the environment where you work.