Man pages matching name domain::publicsuffix in section 3pm:

Domain::PublicSuffix.3pm.en	debian 10 / libdomain-publicsuffix-perl
Domain::PublicSuffix.3pm.en	debian 11 / libdomain-publicsuffix-perl
Domain::PublicSuffix.3pm.en	debian 12 / libdomain-publicsuffix-perl