Man pages matching name zgrep in section 1:

zgrep.1.en	debian 10 / gzip
zgrep.1.es	debian 10 / manpages-es-extra
zgrep.1.hu	debian 10 / manpages-hu
zgrep.1.ja	debian 10 / manpages-ja
zgrep.1.pl	debian 10 / manpages-pl
zgrep.1.en	debian 10 / zutils
zgrep.1.en	debian 11 / gzip
zgrep.1.de	debian 11 / manpages-de
zgrep.1.es	debian 11 / manpages-es
zgrep.1.hu	debian 11 / manpages-hu
zgrep.1.ja	debian 11 / manpages-ja
zgrep.1.pl	debian 11 / manpages-pl
zgrep.1.en	debian 11 / zutils
zgrep.1.en	debian 12 / gzip
zgrep.1.de	debian 12 / manpages-de
zgrep.1.es	debian 12 / manpages-es
zgrep.1.hu	debian 12 / manpages-hu
zgrep.1.ja	debian 12 / manpages-ja
zgrep.1.pl	debian 12 / manpages-pl
zgrep.1.tr	debian 12 / manpages-tr
zgrep.1.en	debian 12 / zutils