Filter.Domains
Filter / Sort
Advanced domain rules, audited results, and presets
EXPLAINABLE RULES
Build the filter
Safe regex rejects backreferences, lookarounds, control escapes, long patterns, and suspicious nested quantifiers. Matching runs in a disposable worker with a hard timeout.
AUDITABLE OUTPUT
Results and reasons
| Select | Original | ASCII domain | Registrable domain | Suffix | Decision | Optional RDAP |
|---|
The table renders the first 500 matching rows for responsiveness. Exports include every included row unless you select specific rows. RDAP is off by default; its two-step lookup sends only the selected domain to the authoritative registry.
CONTINUITY
Presets and recovery
Anonymous drafts stay in this browser. Signed-in users can synchronize named filter presets to their private account.
Domain Extractor
Subtractor
A − B
Domain List A
Domain List B (to subtract)
Compare Lists
Compare two to five domain lists locally. See which lists contain each domain and export the comparison.
Enter domains in at least two lists, then compare.
| Domain | Lists present | A | B | C | D | E |
|---|---|---|---|---|---|---|
| Run a comparison to see results. | ||||||
Page 0 of 0
Add TLDs
Build domain variations from one name and a list of extensions.
Saved only in this browser. Using a set replaces the Extension field.
Results
Enter a keyword and at least one extension to create clickable domain links.
Domain Variations
Combine your keyword with optional prefixes, suffixes, and extensions. Everything runs in this browser.
Saved only in this browser. Using a set replaces the Extensions field.
Results
Enter a keyword and extensions. Prefixes and suffixes are optional.
PRIVACY AND SUPPORT
How this workspace works
Classification
The bundled official Public Suffix List distinguishes suffix, registrable domain, and subdomain, including wildcard and exception rules.
Normalization
Each row keeps its original value and browser-compatible ASCII hostname. Invalid labels remain visible with an explicit reason.
Private by default
Raw rows and rules are not posted to WordPress. Server APIs accept only aggregate counts, account presets, preferences, QA requests, and verified support messages.
Optional RDAP
Enrichment is disabled until you click a row and confirm it. That one domain is sent directly from your browser to the authoritative registry RDAP service discovered through IANA's public bootstrap.
Verified account required
Sign in with the existing email-code flow and complete phone verification before the contact form is revealed.