Split hostnames into subdomain, registered domain (eTLD+1), and public suffix — fully offline.
| Input | Subdomain | Registered (eTLD+1) | Public suffix |
|---|
This tool uses a compact, curated slice of the Public Suffix List covering common gTLDs, ccTLDs, and multi-label suffixes (e.g. co.uk, github.io, com.au). Unknown or new TLDs fall back to the final label. Everything runs in your browser — no network lookups.