diff --git a/docs/modelists/extbans.csv b/docs/modelists/extbans.csv
index 1185df0..eb6c760 100644
--- a/docs/modelists/extbans.csv
+++ b/docs/modelists/extbans.csv
@@ -1,33 +1,35 @@
-Extban / IRCd,charybdis,InspIRCd,UnrealIRCd
-ban_account,$a:,R:,~a:
-ban_account_legacy,,,~R:
-ban_all_opers,$o,,
-ban_all_registered,$a,,
-ban_all_ssl,$z,,
-ban_banshare,$j:,,
-ban_blockcaps,,B:,
-ban_blockcolor,,c:,
-ban_certfp,,z:,~S:
-ban_extgecos,$x:,,
-ban_inchannel,$c:,j:,~c:
-ban_invites,,A:,
-ban_noctcp,,C:,
-ban_nojoins,,,~j:
-ban_nokicks,,Q:,
-ban_nonick,,N:,~n:
-ban_nonotice,,T:,
-ban_not_account,$~a:,,
-ban_not_banshare,$~j:,,
-ban_not_extgecos,$~x:,,
-ban_not_inchannel,$~c:,,
-ban_not_opers,$~o,,
-ban_not_realname,$~r:,,
-ban_not_server,$~s:,,
-ban_not_ssl,$~z,,
-ban_opertype,,O:,~O:
-ban_partmsgs,,p:,
-ban_realname,$r:,r:,~r:
-ban_server,$s:,s:,
-ban_stripcolor,,S:,
-ban_unregistered_matching,,U:,
-quiet,+q (cmode),m:,~q:
+Extban / IRCd,charybdis,InspIRCd,UnrealIRCd,Nefarious
+ban_account,$a:,R:,~a:,~a:
+ban_account_legacy,,,~R:,
+ban_all_opers,$o,,,
+ban_all_registered,$a,,,
+ban_all_ssl,$z,,,
+ban_banshare,$j:,,,~j:
+ban_blockcaps,,B:,,
+ban_blockcolor,,c:,,
+ban_certfp,,z:,~S:,
+ban_extgecos,$x:,,,
+ban_inchannel,$c:,j:,~c:,~c:
+ban_invites,,A:,,
+ban_mark,,,,~m:
+ban_noctcp,,C:,,
+ban_nojoins,,,~j:,
+ban_nokicks,,Q:,,
+ban_nonick,,N:,~n:,~n:
+ban_nonotice,,T:,,
+ban_not_account,$~a:,,,
+ban_not_banshare,$~j:,,,
+ban_not_extgecos,$~x:,,,
+ban_not_inchannel,$~c:,,,
+ban_not_opers,$~o,,,
+ban_not_realname,$~r:,,,
+ban_not_server,$~s:,,,
+ban_not_ssl,$~z,,,
+ban_opertype,,O:,~O:,
+ban_partmsgs,,p:,,
+ban_realname,$r:,r:,~r:,~r:
+ban_server,$s:,s:,,
+ban_stripcolor,,S:,,
+ban_unregistered_mark,,,,~M:
+ban_unregistered_matching,,U:,,
+quiet,+q (cmode),m:,~q:,~q:
diff --git a/docs/modelists/extbans.html b/docs/modelists/extbans.html
index 6d85ad2..5fa4c71 100644
--- a/docs/modelists/extbans.html
+++ b/docs/modelists/extbans.html
@@ -76,103 +76,110 @@ td:first-child, th[scope="row"] {
 <th scope="col">charybdis</th>
 <th scope="col">InspIRCd</th>
 <th scope="col">UnrealIRCd</th>
+<th scope="col">Nefarious</th>
 </tr>
 <tr>
 <th scope="row">ban_account</th>
-<td class="tablecell-yes">$a:<span class="note">data</span></td><td class="tablecell-yes">R:<span class="note">data</span></td><td class="tablecell-yes">~a:<span class="note">data</span></td></tr>
+<td class="tablecell-yes">$a:<span class="note">data</span></td><td class="tablecell-yes">R:<span class="note">data</span></td><td class="tablecell-yes">~a:<span class="note">data</span></td><td class="tablecell-yes">~a:<span class="note">data</span></td></tr>
 <tr>
 <th scope="row">ban_account_legacy</th>
-<td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-yes">~R:<span class="note">data</span></td></tr>
+<td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-yes">~R:<span class="note">data</span></td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_all_opers</th>
-<td class="tablecell-yes2">$o</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-yes2">$o</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_all_registered</th>
-<td class="tablecell-yes2">$a</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-yes2">$a</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_all_ssl</th>
-<td class="tablecell-yes2">$z</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-yes2">$z</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_banshare</th>
-<td class="tablecell-yes">$j:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-yes">$j:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-yes">~j:<span class="note">data</span></td></tr>
 <tr>
 <th scope="row">ban_blockcaps</th>
-<td class="tablecell-na note">n/a</td><td class="tablecell-yes">B:<span class="note">data</span></td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-na note">n/a</td><td class="tablecell-yes">B:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_blockcolor</th>
-<td class="tablecell-na note">n/a</td><td class="tablecell-yes">c:<span class="note">data</span></td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-na note">n/a</td><td class="tablecell-yes">c:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_certfp</th>
-<td class="tablecell-na note">n/a</td><td class="tablecell-yes">z:<span class="note">data</span></td><td class="tablecell-yes">~S:<span class="note">data</span></td></tr>
+<td class="tablecell-na note">n/a</td><td class="tablecell-yes">z:<span class="note">data</span></td><td class="tablecell-yes">~S:<span class="note">data</span></td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_extgecos</th>
-<td class="tablecell-yes">$x:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-yes">$x:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_inchannel</th>
-<td class="tablecell-yes">$c:<span class="note">data</span></td><td class="tablecell-yes">j:<span class="note">data</span></td><td class="tablecell-yes">~c:<span class="note">data</span></td></tr>
+<td class="tablecell-yes">$c:<span class="note">data</span></td><td class="tablecell-yes">j:<span class="note">data</span></td><td class="tablecell-yes">~c:<span class="note">data</span></td><td class="tablecell-yes">~c:<span class="note">data</span></td></tr>
 <tr>
 <th scope="row">ban_invites</th>
-<td class="tablecell-na note">n/a</td><td class="tablecell-yes">A:<span class="note">data</span></td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-na note">n/a</td><td class="tablecell-yes">A:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
+<tr>
+<th scope="row">ban_mark</th>
+<td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-yes">~m:<span class="note">data</span></td></tr>
 <tr>
 <th scope="row">ban_noctcp</th>
-<td class="tablecell-na note">n/a</td><td class="tablecell-yes">C:<span class="note">data</span></td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-na note">n/a</td><td class="tablecell-yes">C:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_nojoins</th>
-<td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-yes">~j:<span class="note">data</span></td></tr>
+<td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-yes">~j:<span class="note">data</span></td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_nokicks</th>
-<td class="tablecell-na note">n/a</td><td class="tablecell-yes">Q:<span class="note">data</span></td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-na note">n/a</td><td class="tablecell-yes">Q:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_nonick</th>
-<td class="tablecell-na note">n/a</td><td class="tablecell-yes">N:<span class="note">data</span></td><td class="tablecell-yes">~n:<span class="note">data</span></td></tr>
+<td class="tablecell-na note">n/a</td><td class="tablecell-yes">N:<span class="note">data</span></td><td class="tablecell-yes">~n:<span class="note">data</span></td><td class="tablecell-yes">~n:<span class="note">data</span></td></tr>
 <tr>
 <th scope="row">ban_nonotice</th>
-<td class="tablecell-na note">n/a</td><td class="tablecell-yes">T:<span class="note">data</span></td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-na note">n/a</td><td class="tablecell-yes">T:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_not_account</th>
-<td class="tablecell-yes">$~a:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-yes">$~a:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_not_banshare</th>
-<td class="tablecell-yes">$~j:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-yes">$~j:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_not_extgecos</th>
-<td class="tablecell-yes">$~x:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-yes">$~x:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_not_inchannel</th>
-<td class="tablecell-yes">$~c:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-yes">$~c:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_not_opers</th>
-<td class="tablecell-yes2">$~o</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-yes2">$~o</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_not_realname</th>
-<td class="tablecell-yes">$~r:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-yes">$~r:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_not_server</th>
-<td class="tablecell-yes">$~s:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-yes">$~s:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_not_ssl</th>
-<td class="tablecell-yes2">$~z</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-yes2">$~z</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_opertype</th>
-<td class="tablecell-na note">n/a</td><td class="tablecell-yes">O:<span class="note">data</span></td><td class="tablecell-yes">~O:<span class="note">data</span></td></tr>
+<td class="tablecell-na note">n/a</td><td class="tablecell-yes">O:<span class="note">data</span></td><td class="tablecell-yes">~O:<span class="note">data</span></td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_partmsgs</th>
-<td class="tablecell-na note">n/a</td><td class="tablecell-yes">p:<span class="note">data</span></td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-na note">n/a</td><td class="tablecell-yes">p:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_realname</th>
-<td class="tablecell-yes">$r:<span class="note">data</span></td><td class="tablecell-yes">r:<span class="note">data</span></td><td class="tablecell-yes">~r:<span class="note">data</span></td></tr>
+<td class="tablecell-yes">$r:<span class="note">data</span></td><td class="tablecell-yes">r:<span class="note">data</span></td><td class="tablecell-yes">~r:<span class="note">data</span></td><td class="tablecell-yes">~r:<span class="note">data</span></td></tr>
 <tr>
 <th scope="row">ban_server</th>
-<td class="tablecell-yes">$s:<span class="note">data</span></td><td class="tablecell-yes">s:<span class="note">data</span></td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-yes">$s:<span class="note">data</span></td><td class="tablecell-yes">s:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">ban_stripcolor</th>
-<td class="tablecell-na note">n/a</td><td class="tablecell-yes">S:<span class="note">data</span></td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-na note">n/a</td><td class="tablecell-yes">S:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
+<tr>
+<th scope="row">ban_unregistered_mark</th>
+<td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td><td class="tablecell-yes">~M:<span class="note">data</span></td></tr>
 <tr>
 <th scope="row">ban_unregistered_matching</th>
-<td class="tablecell-na note">n/a</td><td class="tablecell-yes">U:<span class="note">data</span></td><td class="tablecell-na note">n/a</td></tr>
+<td class="tablecell-na note">n/a</td><td class="tablecell-yes">U:<span class="note">data</span></td><td class="tablecell-na note">n/a</td><td class="tablecell-na note">n/a</td></tr>
 <tr>
 <th scope="row">quiet</th>
-<td class="tablecell-special">+q<br><span class="note">(cmode)</span></td><td class="tablecell-yes">m:<span class="note">data</span></td><td class="tablecell-yes">~q:<span class="note">data</span></td></tr>
+<td class="tablecell-special">+q<br><span class="note">(cmode)</span></td><td class="tablecell-yes">m:<span class="note">data</span></td><td class="tablecell-yes">~q:<span class="note">data</span></td><td class="tablecell-yes">~q:<span class="note">data</span></td></tr>
 
 
 </table>
diff --git a/protocols/p10.py b/protocols/p10.py
index 4af3421..e1ffb52 100644
--- a/protocols/p10.py
+++ b/protocols/p10.py
@@ -796,6 +796,20 @@ class P10Protocol(IRCS2SProtocol):
                                     'registered': 'r', 'cloak_sethost': 'h', 'cloak_fakehost': 'f',
                                     'cloak_hashedhost': 'C', 'cloak_hashedip': 'c', 'locop': 'O',
                                     '*A': '', '*B': '', '*C': 'fCcrh', '*D': 'oOiwskgxnqBdDHIRWaXLz'})
+            # Nefarious supports extbans as documented at
+            # https://github.com/evilnet/nefarious2/blob/master/doc/extendedbans.txt
+            self.extbans_matching.update({
+                'ban_account': '~a:',
+                'ban_inchannel': '~c:',
+                'ban_realname': '~r:',
+                'ban_mark': '~m:',
+                'ban_unregistered_mark': '~M:',
+                'ban_banshare': '~j:'
+            })
+            self.extbans_acting.update({
+                'quiet': '~q:',
+                'ban_nonick': '~n:'
+            })
         elif p10_ircd == 'snircd':
             # snircd has +u instead of +Q for hidequits, and fewer chanel modes.
             cmodes = {'oplevel_apass': 'A', 'oplevel_upass': 'U', 'delayjoin': 'D', 'regonly': 'r',