aeondave/dnsx
offensive-tools/recon/dnsx/SKILL.md
Auth/lab ref: Fast DNS resolution and brute-force tool from ProjectDiscovery.
$ install --global
skillsauthnpx skillsauth add aeondave/malskill dnsxInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Jun 8, 2026, 3:57 AM120.1s2 files scanned
SKILL.md
- name:
- dnsx
- description:
- Auth/lab ref: Fast DNS resolution and brute-force tool from ProjectDiscovery.
- license:
- MIT
- compatibility:
- Linux, Windows, macOS.
- author:
- AeonDave
- version:
- 1.1
dnsx
Fast DNS toolkit — resolve, brute-force, and extract DNS records at scale.
Quick Start
# Resolve a list of subdomains
cat subs.txt | dnsx
# DNS brute-force against a domain
dnsx -d example.com -w wordlist.txt
# Extract A records with response
cat subs.txt | dnsx -a -resp
Core Flags
| Flag | Description |
|------|-------------|
| -l <file> | Input list of hosts/subdomains |
| -d <domain> | Target domain (for brute-force) |
| -w <wordlist> | Wordlist for brute-force |
| -a | Query A records |
| -aaaa | Query AAAA records |
| -cname | Query CNAME records |
| -mx | Query MX records |
| -ns | Query NS records |
| -txt | Query TXT records |
| -ptr | Query PTR records |
| -resp | Show DNS response |
| -resp-only | Show DNS response only |
| -rcode <code> | Filter by rcode (e.g., noerror,nxdomain) |
| -r <resolvers> | Custom resolver file |
| -rl <n> | Rate limit (requests/second) |
| -t <n> | Threads (default 100) |
| -timeout <n> | Timeout (default 5s) |
| -silent | Print results only |
| -o <file> | Output file |
| -json | JSON output |
| -wildcard | Filter wildcard subdomains |
| -cdn | Show CDN name for resolved IPs |
| -asn | Show ASN info for resolved IPs |
| -recon | Query all record types at once |
| -wt <n> | Wildcard threshold (default 5) |
| -retry <n> | Retry failed queries |
Common Workflows
# Pipeline: subfinder -> dnsx resolution
subfinder -d target.com -silent | dnsx -silent
# DNS brute-force with wordlist
dnsx -d target.com -w /usr/share/dnsrecon/subdomains-top1mil-5000.txt -t 50
# Get all record types in JSON
cat subs.txt | dnsx -a -cname -mx -txt -resp -o dns_records.json -json
# Resolve IPs for a list
cat domains.txt | dnsx -a -resp-only | sort -u
# Filter wildcard results
cat subs.txt | dnsx -wildcard -d target.com -silent
# Reverse DNS (PTR) on IPs
cat ips.txt | dnsx -ptr -resp-only
# Full recon pipeline: subfinder -> dnsx -> httpx
subfinder -d target.com -silent -all | \
dnsx -silent -a -resp-only | \
httpx -silent -status-code -title -tech-detect
# Extract MX/TXT for email security audit
dnsx -d target.com -mx -txt -resp -silent
# Brute-force with custom resolvers (bypass rate limits)
dnsx -d target.com -w subdomains.txt -r resolvers.txt -rl 500
# Wildcard detection + filter
dnsx -d target.com -w wordlist.txt -wildcard -wt 3 -silent
# Extract CNAMEs (find dangling/takeovers)
cat subs.txt | dnsx -cname -resp -silent | grep -v "target.com"
Resources
| File | When to load |
|------|--------------|
| references/dns-records.md | DNS record types, brute-force wordlists, wildcard detection, subdomain takeover |
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