Public Suffix List

Publicsuffixlist is a Python library that implements a parser for the Public Suffix List (PSL). It allows users to extract the public suffix and registrable domain from a given hostname, supporting IDN (unicode and punycoded) and compliant with PSL test data. The library is pure Python, has no external dependencies, and ships with a bundled, frequently updated copy of the PSL. Its current version is 1.0.2.20260411, with new releases often tied to updates of the Public Suffix List itself.