is_public_suffix        Is a host itself a public suffix?
psl_cache_prune         Prune stale on-disk PSL cache snapshots
psl_outdated            Is the active Public Suffix List snapshot
                        stale?
psl_refresh             Refresh the cached Public Suffix List from
                        upstream
psl_rules               Rules of the active Public Suffix List
psl_use                 Choose the active Public Suffix List for this
                        session
psl_version             Identity of the active Public Suffix List
public_suffix           Public suffix of a host
public_suffix_rule      Inspect the prevailing PSL rule for each host
registrable_domain      Registrable domain of a host
suffix_extract          Split hosts into subdomain, registrant label,
                        and public suffix
