Man pages matching name business::br::cnpj in section 3pm:

Business::BR::CNPJ.3pm.en	debian 10 / libbusiness-br-ids-perl
Business::BR::CNPJ.3pm.en	debian 11 / libbusiness-br-ids-perl
Business::BR::CNPJ.3pm.en	debian 12 / libbusiness-br-ids-perl