Man pages matching name yptest in section 8:

yptest.8.ja	debian 10 / manpages-ja
yptest.8.en	debian 10 / nis
yptest.8.ja	debian 11 / manpages-ja
yptest.8.en	debian 11 / yp-tools
yptest.8.ja	debian 12 / manpages-ja
yptest.8.en	debian 12 / yp-tools