Subdomain Permutation Generator

Turn a base domain into a resolver-ready wordlist — toggle environment, service, and region tokens, add your own keywords, and generate. This tool only builds the list; it never queries DNS.

Use only on domains you own or are explicitly authorized to test.

100% client-side, generation only — this tool builds a candidate wordlist, it never queries DNS or contacts the target.

Base domain

Add your own keywords / seed subdomains (optional)

Keywords

Company/product names, environments, or observed tokens — one per line or comma-separated.

Seed from known subdomains

Paste subdomains you've already discovered — their labels get extracted and mutated too.

Built-in word sources

Permutation modes

Standalone words (api.example.com)Prefix/suffix affixing (dev-api.example.com)Word-joining your own keywords (api-dev.example.com)Numbering (app1.example.com)

Separators

Up to ~1,275 candidates with current settings.

Breakdown by mode

Standalone: ~27
Affixing: ~1,248
Numbering: ~0
Word-joining: ~0

Max output

Pick your options above, then click Generate.