Common DNS Record Types
A / AAAA: Maps hostnames to IPv4 (32-bit) or IPv6 (128-bit) addresses.
CNAME: A canonical "Alias" pointing one domain name to another.
MX: Mail Exchange records that route email to the correct mail servers.
TXT: Used for human-readable text and security (SPF, DKIM, DMARC).
PTR: "Pointer" records used for Reverse DNS (mapping IP to Hostname).
DNS Response Codes (RCodes)
NOERROR (0): Query successful; records found.
NXDOMAIN (3): The domain name does not exist in the registry.
SERVFAIL (2): The name server encountered an internal error.
REFUSED (5): The server refused to answer (likely an IP/ACL block).
Advanced Options
DNS Response Codes: Shows the raw RCode returned by the server - NOERROR, NXDOMAIN, SERVFAIL, REFUSED, etc.
Raw Wire Format: Displays the unedited 12-byte header and section counts (Question, Answer, Authority, Additional) in dig style.
Binary Hex View: Shows the exact byte stream — useful for verifying DNS compression pointers (C0 0C) and field offsets.
Query over IPv6: Sends the DNS query to the name server over IPv6 rather than IPv4, useful for testing dual-stack connectivity.
Use TCP transport: DNS normally uses UDP, which is limited to a single packet. Some domains (e.g. those with many TXT records) return a truncated response over UDP. Switching to TCP removes the size limit and retrieves the complete answer.
