Do a
 
Q WPWIN-L FOR netnews@*
 
As far of the output, you should see the following options
set:
 
MAIL
FULL822 (or FULLHDR)
 
--  co-owner:   INFOSYS, TQM-L, CPARK-L, ERAPPA-L, JANITORS, LDBASE-L, et -L
URL:mailto:[log in to unmask] "Never confuse the messenger with the message"