Man pages matching name nfsstat in section 8:

nfsstat.8.ja	debian 10 / manpages-ja
nfsstat.8.en	debian 10 / nfs-common
nfsstat.8.fr	debian 11 / manpages-fr
nfsstat.8.ja	debian 11 / manpages-ja
nfsstat.8.en	debian 11 / nfs-common
nfsstat.8.fr	debian 12 / manpages-fr
nfsstat.8.ja	debian 12 / manpages-ja
nfsstat.8.en	debian 12 / nfs-common