dnsx
dnsx Usage
Learn dnsx usage including queries, filters, and configurations
Access help
Use dnsx -h
to display all of the help options.
Help options
INPUT:
-l, -list string list of sub(domains)/hosts to resolve (file or stdin)
-d, -domain string list of domain to bruteforce (file or comma separated or stdin)
-w, -wordlist string list of words to bruteforce (file or comma separated or stdin)
QUERY:
-a query A record (default)
-aaaa query AAAA record
-cname query CNAME record
-ns query NS record
-txt query TXT record
-srv query SRV record
-ptr query PTR record
-mx query MX record
-soa query SOA record
-axfr query AXFR
-caa query CAA record
-any query ANY record
FILTER:
-re, -resp display dns response
-ro, -resp-only display dns response only
-rc, -rcode string filter result by dns status code (eg. -rcode noerror,servfail,refused)
PROBE:
-cdn display cdn name
-asn display host asn information
RATE-LIMIT:
-t, -threads int number of concurrent threads to use (default 100)
-rl, -rate-limit int number of dns request/second to make (disabled as default) (default -1)
UPDATE:
-up, -update update dnsx to latest version
-duc, -disable-update-check disable automatic dnsx update check
OUTPUT:
-o, -output string file to write output
-j, -json write output in JSONL(ines) format
-omit-raw, -or omit raw dns response from jsonl output
DEBUG:
-hc, -health-check run diagnostic check up
-silent display only results in the output
-v, -verbose display verbose output
-raw, -debug display raw dns response
-stats display stats of the running scan
-version display version of dnsx
OPTIMIZATION:
-retry int number of dns attempts to make (must be at least 1) (default 2)
-hf, -hostsfile use system host file
-trace perform dns tracing
-trace-max-recursion int Max recursion for dns trace (default 32767)
-resume resume existing scan
-stream stream mode (wordlist, wildcard, stats and stop/resume will be disabled)
CONFIGURATIONS:
-r, -resolver string list of resolvers to use (file or comma separated)
-wt, -wildcard-threshold int wildcard filter threshold (default 5)
-wd, -wildcard-domain string domain name for wildcard filtering (other flags will be ignored)
Notes on usage
- By default,
dnsx
checks for A record. - By default
dnsx
uses Google, Cloudflare, Quad9 resolver. - A custom resolver list can be loaded using the
r
flag. - Domain name (
wd
) input is mandatory for wildcard elimination. - The DNS record flag cannot be used when using wildcard filtering.
- DNS resolution (
l
) and DNS brute-forcing (w
) can’t be used together. - VPN operators tend to filter high DNS/UDP traffic, therefore the tool might experience packets loss (eg. Mullvad VPN)
dnsx
is made with 🖤 by the projectdiscovery team.