Man pages matching name whohas in section 1:

whohas.1.de	debian 10 / whohas
whohas.1.en	debian 10 / whohas
whohas.1.de	debian 11 / whohas
whohas.1.en	debian 11 / whohas
whohas.1.de	debian 12 / whohas
whohas.1.en	debian 12 / whohas