Not an ad, but a list of CNet boards...

Amiga Boards..         Telnet Address             Port  BBS Program
---------------------  ------------------------   ----  -----------
aBSiNTHE               absinthebbs.net            1940  CNet v5.21b
CheckSum Acknowledged  chksmak.cnetbbs.net        2600  CNet v5.21b
Future World II        fw2.cnetbbs.net            6800  CNet v5.21c HQ
Heights                heightsbbs.heightspc.net   6860  CNet v5.21b
LV-426                 lv426bbs.hopto.org         6464  CNet v5.21b
Ministry               ministrybbs.com            3600  CNet v5.21b
Necronomicon II        necrobbs.strangled.net     40    CNet v5.21b
Power                  powerbbs.ddns.net          2300  CNet v5.21b
Rats Den               bbs.catracing.org          6502  CNet v5.21b
Reign Of Fire          rofbbs.ddns.net            2300  CNet v5.21b
Second Coming          scbbs.ddns.net             6400  CNet v5.21b
Wrong Number ]I[       wn2.duckdns.org            6400  CNet v5.21b
-------------------------------------------------------------------
Dial-Up Boards..       Phone Number               Baud  BBS Program
---------------------  -------------------------  ----  -----------
Heights                (520)/303-7894             5760  CNet v5.21b
Heights                (800)/258-4660             5760  CNet v5.21b
Reign Of Fire          (931)/494-9100             5760  CNet v5.21b
-------------------------------------------------------------------
C=64/128 Boards..      Telnet Address             Port  BBS Program
---------------------  -------------------------  ----  -----------
Low Down               lowdown.servebbs.net       6401  C-Net64 DS2
Pirates Cove           pc.cnet128.com             6464  C-Net128 T2
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  CNet Amiga & C-Net 64 Copyright (c)2018 Storm's Edge Technology
         http://www.CNetBBS.net  +  http://www.CNet64.com        
  
             //
            // Gary McCulloch of Reign Of Fire BBS. rofbbs.ddns.net:2300
          \X/ JoinLink - RetroNet - C=Net - FidoNet    (931)/494-9100
  
--- CNet/5
 * Origin: Reign Of Fire: rofbbs.ddns.net:2300 / (931)494-9100 (1:154/50)