# projectdiscovery/shuffledns

MassDNS wrapper written in go to enumerate valid subdomains using active bruteforce as well as resolve subdomains with wildcard filtering and easy input-output support.

Repository: https://github.com/projectdiscovery/shuffledns
Canonical: https://ross.abutalabs.com/products/shuffledns
Homepage: https://projectdiscovery.io
Language: Go
License: GPL-3.0
License Family: copyleft
Topics: dns, dns-resolver, dns-resolution, dns-bruteforcer, massdns, reconnaissance, subdomain-bruteforcing, hacktoberfest
Last push: 2026-08-24T19:27:01+00:00

## Health v2 (maintenance only)
Score: 86/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 60, longevity 100
- inputs: {"age_days": 2381, "days_push": 9, "days_rel": 267, "gap_med": 0, "n_releases_24m": 2}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1664, forks 218 (observed 2026-08-28T04:05:18.896020+00:00)

## What it is
shuffleDNS is a Go wrapper around massDNS for fast active subdomain enumeration via bruteforce and DNS resolution with smart wildcard filtering. It supports stdin/stdout for easy integration into reconnaissance workflows.

## Use cases
- enumerate valid subdomains of a domain via bruteforce
- resolve a list of subdomains and filter wildcard DNS responses
- pipe subdomain lists into and out of recon workflows via stdin/stdout
- validate raw massdns output with wildcard filtering
- run fast DNS resolution using custom resolver lists

## When to choose
- you need fast, active subdomain bruteforcing with wildcard handling
- you already use massDNS but want easier input/output and wildcard filtering
- you want a CLI tool that fits into Unix-pipeline-based recon workflows

## When to avoid
- you need passive subdomain discovery from external data sources
- you want a GUI or managed attack-surface platform rather than a CLI
- you cannot install massDNS, which is a required dependency

## Facets
- artifact type: cli-tool
- maturity: active
- function: cli, networking, security
- domain: security, developer-tools
- platform: windows, cli
- tags: dns, subdomain-enumeration, massdns, reconnaissance, wildcard-handling, bruteforce, command-line, linux, macos

## Member repositories
- projectdiscovery/shuffledns (main) score 86

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:18.896020+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:44:29.916821+00:00, confidence not recorded.
  - readme: https://github.com/projectdiscovery/shuffledns (fetched 2026-08-28T04:05:18.896020+00:00, sha 3cbc5468bb7f)
  - homepage: https://projectdiscovery.io (fetched 2026-08-29T11:16:41.671826+00:00, sha 4f86254fd766)
  - site_page: https://docs.neo.projectdiscovery.io/ (fetched 2026-08-29T11:16:41.683688+00:00, sha de87e1036abb)
  - site_page: https://docs.neo.projectdiscovery.io/use-cases/attack-surface-monitoring (fetched 2026-08-29T11:16:41.685455+00:00, sha e2b7027938c7)
  - site_page: https://projectdiscovery.io/pricing (fetched 2026-08-29T11:16:41.681701+00:00, sha 155f9d3a4107)
- Data as of 2026-08-30T08:39:29.467469+00:00.