Man pages matching name utmpdump in section 1:

utmpdump.1.de	debian 10 / manpages-de
utmpdump.1.en	debian 10 / util-linux
utmpdump.1.de	debian 11 / manpages-de
utmpdump.1.fr	debian 11 / manpages-fr
utmpdump.1.en	debian 11 / util-linux
utmpdump.1.de	debian 12 / manpages-de
utmpdump.1.fr	debian 12 / manpages-fr
utmpdump.1.uk	debian 12 / manpages-uk
utmpdump.1.en	debian 12 / util-linux