DIG pillar hub
DIG query guides
Tutorials for online DIG lookups: MX, TXT, NS, A/AAAA, CAA, TTL, dig vs nslookup, and single-record queries with resolver-style output.
DIG Online — DNS Query Without Terminal
Use an online DIG tool for A, MX, NS, TXT, and other record types when terminal dig is unavailable. Compare with DNS Checker all-records view.
DIG NS Lookup — Find Authoritative Nameservers
How to check NS records with DIG, delegation glue, mismatched registrar NS, and fixing DNS after hosting moves.
DIG vs nslookup — Which DNS Tool to Use
Compare dig and nslookup for DNS troubleshooting, output sections, scripting, and when an online DIG tool is enough.
DIG MX Troubleshooting — Mail Routing Debug
Use DIG type MX to debug mail routing, priorities, and stale exchangers.
Validate SPF with DIG TXT Queries
Confirm SPF strings with focused DIG TXT lookups before senders fail auth.
DIG A and AAAA Lookups for Hosting Cutover
Use DIG type A and AAAA to verify hosting migrations before and after TTL expiry.
DIG CAA Queries Before Certificate Issuance
Check CAA records with DIG before your CA rejects issuance or a restrictive policy blocks renewal.
Monitor Zone Changes with DIG SOA Serial
Track SOA serial increments after DNS edits to confirm authoritative zones updated.
DIG PTR and Reverse DNS Lookups
Validate PTR records for mail egress IPs and reverse DNS mismatches with focused DIG queries.
DIG SRV Record Lookups Explained
Query SRV records for SIP, XMPP, LDAP and other service discovery workflows with online DIG.
DIG TTL Answers and Resolver Cache Behavior
Read TTL values in DIG output to estimate cache lifetime and plan re-check windows after DNS changes.
Troubleshoot NXDOMAIN and SERVFAIL with DIG
Interpret DIG status codes when names fail to resolve or authoritative DNS returns errors.
Query Authoritative Nameservers with DIG
When recursive caches lie, use DIG against authoritative NS to see the zone file seconds after Save.