Registered domain (eTLD+1)

Find the public suffix (eTLD) and registered domain (eTLD+1) for any hostname, using the Public Suffix List.

Networking

Runs locally in your browser against a bundled list. Nothing is sent anywhere.

API endpointGEThttps://ronutz.com/api/v1/public-suffixDocumented, not served. Opens the specification.

References