Resolve A records via Cloudflare (default record type)
Run 'dog example.com @1.1.1.1' to query A records over Cloudflare's public resolver. dog defaults to A when no record type is given, and the explicit @1.1.1.1 sidesteps the host's default resolver (which may be unreachable on a locked-down server - symptom: 'No such host is known. (os error 11001)'). ANSI escapes are stripped by the demo's sanitizer.
Resolve MX records over a specific nameserver
Run 'dog example.com MX @1.1.1.1 --time' to query MX records via Cloudflare's public resolver (1.1.1.1) and print how long the response took. dog's positional argument parser figures out which token is the host, the record type, and the nameserver.
JSON-formatted DNS response (via Cloudflare)
Run 'dog example.com @1.1.1.1 --json' and surface the structured response: queries[], answers[], authorities[], additionals[], each entry with type, class, ttl, name, and a value object specific to the record type. The explicit @1.1.1.1 picks Cloudflare's resolver so the demo works even when the host's default DNS is unreachable. JSON is pretty-printed before display.
# dog - Help
Source: https://github.com/ogham/dog
```
dog � command-line DNS client
Usage:
dog [OPTIONS] [--] <arguments>
Examples:
dog example.net Query a domain using default settings
dog example.net MX ...looking up MX records instead
dog example.net MX @1.1.1.1 ...using a specific nameserver instead
dog example.net MX @1.1.1.1 -T ...using TCP rather than UDP
dog -q example.net -t MX -n 1.1.1.1 -T As above, but using explicit arguments
Query options:
<arguments> Human-readable host names, nameservers, types, or classes
-q, --query=HOST Host name or IP address to query
-t, --type=TYPE Type of the DNS record being queried (A, MX, NS...)
-n, --nameserver=ADDR Address of the nameserver to send packets to
--class=CLASS Network class of the DNS record being queried (IN, CH, HS)
Sending options:
--edns=SETTING Whether to OPT in to EDNS (disable, hide, show)
--txid=NUMBER Set the transaction ID to a specific value
-Z=TWEAKS Set uncommon protocol-level tweaks
Protocol options:
-U, --udp Use the DNS protocol over UDP
-T, --tcp Use the DNS protocol over TCP
-S, --tls Use the DNS-over-TLS protocol
-H, --https Use the DNS-over-HTTPS protocol
Output options:
-1, --short Short mode: display nothing but the first result
-J, --json Display the output as JSON
--color, --colour=WHEN When to colourise the output (always, automatic, never)
--seconds Do not format durations, display them as seconds
--time Print how long the response took to arrive
Meta options:
-?, --help Print list of command-line options
-v, --version Print version information
```
