diff --git a/plugins/changehost.py b/plugins/changehost.py
index d080993..c3c58bb 100644
--- a/plugins/changehost.py
+++ b/plugins/changehost.py
@@ -30,12 +30,8 @@ def _changehost(irc, target, args):
                     "Changehost will not function correctly!", irc.name)
         return
 
-    # Match against both the user's IP and real host.
-    target_host = irc.getHostmask(target, realhost=True)
-    target_ip = irc.getHostmask(target, ip=True)
-
     for host_glob, host_template in changehost_hosts.items():
-        if ircmatch.match(0, host_glob, target_host) or ircmatch.match(0, host_glob, target_ip):
+        if irc.matchHost(host_glob, target):
             # This uses template strings for simple substitution:
             # https://docs.python.org/3/library/string.html#template-strings
             template = string.Template(host_template)
diff --git a/plugins/opercmds.py b/plugins/opercmds.py
index a81f0ae..f5cd492 100644
--- a/plugins/opercmds.py
+++ b/plugins/opercmds.py
@@ -1,14 +1,6 @@
 """
 opercmds.py: Provides a subset of network management commands.
 """
-
-# ircmatch library from https://github.com/mammon-ircd/ircmatch
-# (pip install ircmatch)
-try:
-    import ircmatch
-except ImportError:
-    ircmatch = None
-
 from pylinkirc import utils
 from pylinkirc.log import log
 
@@ -19,41 +11,28 @@ def checkban(irc, source, args):
     Oper only. If a nick or hostmask is given, return whether the given banmask will match it. Otherwise, returns a list of connected users that would be affected by such a ban, up to 50 results."""
     irc.checkAuthenticated(source, allowOper=False)
 
-    if ircmatch is None:
-        irc.reply("Error: missing ircmatch module (install it via 'pip install ircmatch').")
-        return
-
     try:
         banmask = args[0]
     except IndexError:
         irc.reply("Error: Not enough arguments. Needs 1-2: banmask, nick or hostmask to check (optional).")
         return
 
-    # Casemapping value (0 is rfc1459, 1 is ascii) used by ircmatch.
-    if irc.proto.casemapping == 'rfc1459':
-        casemapping = 0
-    else:
-        casemapping = 1
-
-
     try:
         targetmask = args[1]
     except IndexError:
         # No hostmask was given, return a list of affected users.
 
-        irc.msg(source, "Checking matches for \x02%s\x02:" % banmask, notice=True)
+        irc.msg(source, "Checking for hosts that match \x02%s\x02:" % banmask, notice=True)
 
         results = 0
         for uid, userobj in irc.users.copy().items():
-            targetmask = irc.getHostmask(uid)
-            if ircmatch.match(casemapping, banmask, targetmask):
+            if irc.matchHost(banmask, uid):
                 if results < 50:  # XXX rather arbitrary limit
-                    serverobj = irc.servers[irc.getServer(uid)]
                     s = "\x02%s\x02 (%s@%s) [%s] {\x02%s\x02}" % (userobj.nick, userobj.ident,
-                        userobj.host, userobj.realname, serverobj.name)
+                        userobj.host, userobj.realname, irc.getFriendlyName(irc.getServer(uid)))
 
                     # Always reply in private to prevent information leaks.
-                    irc.msg(source, s, notice=True)
+                    irc.reply(s, private=True)
                 results += 1
         else:
             if results:
@@ -62,15 +41,9 @@ def checkban(irc, source, args):
             else:
                 irc.msg(source, "No results found.", notice=True)
     else:
-        # Target can be both a nick (of an online user) or a hostmask.
-        uid = irc.nickToUid(targetmask)
-        if uid:
-            targetmask = irc.getHostmask(uid)
-        elif not utils.isHostmask(targetmask):
-            irc.reply("Error: Invalid nick or hostmask '%s'." % targetmask)
-            return
-
-        if ircmatch.match(casemapping, banmask, targetmask):
+        # Target can be both a nick (of an online user) or a hostmask. irc.matchHost() handles this
+        # automatically.
+        if irc.matchHost(banmask, targetmask):
             irc.reply('Yes, \x02%s\x02 matches \x02%s\x02.' % (targetmask, banmask))
         else:
             irc.reply('No, \x02%s\x02 does not match \x02%s\x02.' % (targetmask, banmask))