diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,9 @@
 Series 0
 ---------
 
+ * 0.2.0.0
+    * Added `onAddrPart` and Addr and Remote type indication predicates.
+
  * 0.1.1.0
     * Fix test to not require existing user .ssh/known_hosts file.
     * Added separate changelog
diff --git a/src/Network/SSH/KnownHosts.hs b/src/Network/SSH/KnownHosts.hs
--- a/src/Network/SSH/KnownHosts.hs
+++ b/src/Network/SSH/KnownHosts.hs
@@ -42,6 +42,9 @@
     , SSHRemoteAddr(..), SSHRemoteAddrs(..)
     , KeyAlgorithm, SSHKey, DNSName, SSHRemote(..)
     , IPv4, IPv6
+    , onAddrPart
+    , isIPv4Remote, isIPv6Remote, isDNSRemote
+    , isIPv4Addr, isIPv6Addr, isDNSAddr
     , targetAddr
     ) where
 
@@ -178,3 +181,33 @@
 -- representing the contents of that file (by calling 'parseRemotes').
 readKnownHostsFile :: String -> IO [SSHRemote]
 readKnownHostsFile f = parseRemotes <$> TIO.readFile f
+
+
+-- | The onAddrPart can be used to apply the specified function to the
+-- SSHRemoteAddr portion of an SSHRemote specification.
+onAddrPart f (SSHRemote addrs _ _) =
+    let oAP (SSH1Addr a) = [f a]
+        oAP (SSHAddrs l) = map f l
+    in oAP addrs
+
+
+-- | The isIPv4Remote, isIPv6Remote, and isDNSRemote predicate tests
+-- indicate if the specified SSHRemote is of the indicated type.
+isIPv4Remote, isIPv6Remote, isDNSRemote :: SSHRemote -> Bool
+isIPv4Remote = or . onAddrPart isIPv4Addr
+isIPv6Remote = or . onAddrPart isIPv6Addr
+isDNSRemote = or . onAddrPart isDNSAddr
+
+
+-- | The isIPv4Addr, isIPv6Addr, and isDNSAddr predicate tests
+-- indicate if the specified SSHRemoteAddr is of the indicated type.
+isIPv4Addr, isIPv6Addr, isDNSAddr :: SSHRemoteAddr -> Bool
+isIPv4Addr (RemoteV4 _) = True
+isIPv4Addr (RemoteV4Port _ _) = True
+isIPv4Addr _ = False
+isIPv6Addr (RemoteV6 _) = True
+isIPv6Addr (RemoteV6Port _ _) = True
+isIPv6Addr _ = False
+isDNSAddr (RemoteDNS _) = True
+isDNSAddr (RemoteDNSPort _ _) = True
+isDNSAddr _ = False
diff --git a/ssh-known-hosts.cabal b/ssh-known-hosts.cabal
--- a/ssh-known-hosts.cabal
+++ b/ssh-known-hosts.cabal
@@ -1,5 +1,5 @@
 name:                ssh-known-hosts
-version:             0.1.1.0
+version:             0.2.0.0
 synopsis:            Read and interpret the SSH known-hosts file
 
 description: