diff --git a/Netdisco/Changes b/Netdisco/Changes
index b3ea66bc..61348991 100644
--- a/Netdisco/Changes
+++ b/Netdisco/Changes
@@ -4,6 +4,7 @@
 
   * Add IP Phones discovered through LLDP/CDP report
   * Add device/node/vlan/port specific search from Navbar
+  * Add Undiscovered Neighbors admin report
   * [#3] [#47] Device Neighbor Map can have max depth and VLAN filter
   * [#31] get_community now supported
   * [#19] Ask for Reason when changing Port up/down Status, or VLAN
diff --git a/Netdisco/lib/App/Netdisco/DB/Result/Virtual/UndiscoveredNeighbors.pm b/Netdisco/lib/App/Netdisco/DB/Result/Virtual/UndiscoveredNeighbors.pm
new file mode 100644
index 00000000..94d14c18
--- /dev/null
+++ b/Netdisco/lib/App/Netdisco/DB/Result/Virtual/UndiscoveredNeighbors.pm
@@ -0,0 +1,58 @@
+package App::Netdisco::DB::Result::Virtual::UndiscoveredNeighbors;
+
+use strict;
+use warnings;
+
+use utf8;
+use base 'DBIx::Class::Core';
+
+__PACKAGE__->table_class('DBIx::Class::ResultSource::View');
+
+__PACKAGE__->table('undiscovered_neighbors');
+__PACKAGE__->result_source_instance->is_virtual(1);
+__PACKAGE__->result_source_instance->view_definition(<<'ENDSQL');
+    SELECT DISTINCT ON (p.remote_ip) d.ip,
+                                     d.name,
+                                     d.dns,
+                                     p.port,
+                                     p.remote_ip,
+                                     p.remote_id,
+                                     p.remote_type,
+                                     p.remote_port,
+                                     a.log,
+                                     a.finished
+    FROM device_port p
+    JOIN device d ON d.ip = p.ip
+    JOIN ADMIN a ON p.remote_ip = a.device
+    WHERE p.remote_ip NOT IN
+        (SELECT ALIAS
+         FROM device_ip)
+      AND a.action = 'discover'
+    ORDER BY p.remote_ip,
+             a.finished DESC
+ENDSQL
+
+__PACKAGE__->add_columns(
+  "ip",
+  { data_type => "inet", is_nullable => 0 },
+  "name",
+  { data_type => "text", is_nullable => 1 },
+  "dns",
+  { data_type => "text", is_nullable => 1 },
+  "port",
+  { data_type => "text", is_nullable => 0 },
+  "remote_ip",
+  { data_type => "inet", is_nullable => 1 },
+  "remote_port",
+  { data_type => "text", is_nullable => 1 },
+  "remote_type",
+  { data_type => "text", is_nullable => 1 },
+  "remote_id",
+  { data_type => "text", is_nullable => 1 },
+  "log",
+  { data_type => "text", is_nullable => 1 },
+  "finished",
+  { data_type => "timestamp", is_nullable => 1 },
+);
+
+1;
diff --git a/Netdisco/lib/App/Netdisco/Web/Plugin/AdminTask/UndiscoveredNeighbors.pm b/Netdisco/lib/App/Netdisco/Web/Plugin/AdminTask/UndiscoveredNeighbors.pm
new file mode 100644
index 00000000..36c10667
--- /dev/null
+++ b/Netdisco/lib/App/Netdisco/Web/Plugin/AdminTask/UndiscoveredNeighbors.pm
@@ -0,0 +1,47 @@
+package App::Netdisco::Web::Plugin::AdminTask::UndiscoveredNeighbors;
+
+use strict;
+use warnings;
+use Dancer ':syntax';
+use Dancer::Plugin::DBIC;
+use Dancer::Plugin::Auth::Extensible;
+use App::Netdisco::Util::Device qw/is_discoverable/;
+
+use App::Netdisco::Web::Plugin;
+
+register_admin_task(
+    {   tag          => 'undiscoveredneighbors',
+        label        => 'Undiscovered Neighbors',
+        provides_csv => 1,
+    }
+);
+
+get '/ajax/content/admin/undiscoveredneighbors' => require_role admin => sub {
+    my @devices
+        = schema('netdisco')->resultset('Virtual::UndiscoveredNeighbors')
+        ->order_by('ip')->hri->all;
+
+    return unless scalar @devices;
+
+    # Don't include devices excluded from discovery by config
+    my @results = grep {
+        is_discoverable( $_->{'ports'}->{remote_ip},
+            $_->{'ports'}->{'remote_type'} )
+    } @devices;
+
+    return unless scalar @results;
+
+    if ( request->is_ajax ) {
+        template 'ajax/admintask/undiscoveredneighbors.tt',
+            { results => \@results, },
+            { layout  => undef };
+    }
+    else {
+        header( 'Content-Type' => 'text/comma-separated-values' );
+        template 'ajax/admintask/undiscoveredneighbors_csv.tt',
+            { results => \@results, },
+            { layout  => undef };
+    }
+};
+
+1;
diff --git a/Netdisco/share/config.yml b/Netdisco/share/config.yml
index 9a4efaaa..9616402f 100644
--- a/Netdisco/share/config.yml
+++ b/Netdisco/share/config.yml
@@ -59,6 +59,7 @@ web_plugins:
   - AdminTask::UserLog
   - AdminTask::Users
   - AdminTask::PortLog
+  - AdminTask::UndiscoveredNeighbors
   - Search::Device
   - Search::Node
   - Search::VLAN
diff --git a/Netdisco/share/views/ajax/admintask/undiscoveredneighbors.tt b/Netdisco/share/views/ajax/admintask/undiscoveredneighbors.tt
new file mode 100644
index 00000000..e3322589
--- /dev/null
+++ b/Netdisco/share/views/ajax/admintask/undiscoveredneighbors.tt
@@ -0,0 +1,26 @@
+<table class="table table-bordered table-condensed table-striped nd_floatinghead">
+  <thead>
+    <tr>
+      <th>Device Location Triggering<br>Last Discovery Attempt</th>
+      <th>Undiscovered Neighbor</th> 
+      <th class="nd_center-cell">Last Discovery Attempt</th>
+      <th class="nd_center-cell">Last Discovery Log</th>
+    </tr>
+  </thead>
+  </tbody>
+    [% FOREACH row IN results %]
+    <tr>
+      <td><a href="[% device_ports %]&q=[% row.dns || row.ip | uri %]&f=[% row.port | uri %]">
+               [% row.dns || row.name || row.ip | html_entity %] ( [% row.port | html_entity %] ) </a></td>
+      <td><a href="[% search_node %]&q=[% row.remote_ip | uri %]">
+                                 [% row.remote_ip | html_entity %]</a>
+                                 ([% row.remote_port | html_entity %])
+                                 [% ' id: '_ row.remote_id IF row.remote_id %]
+                                 [% ' type: '_ row.remote_type IF row.remote_type %]</td>
+      <td class="nd_center-cell">[% row.finished | html_entity %]</td>
+      <td class="nd_center-cell">[% row.log | html_entity %]</td>
+    </tr>
+    [% END %]
+  </tbody>
+</table>
+
diff --git a/Netdisco/share/views/ajax/admintask/undiscoveredneighbors_csv.tt b/Netdisco/share/views/ajax/admintask/undiscoveredneighbors_csv.tt
new file mode 100644
index 00000000..78cef5fb
--- /dev/null
+++ b/Netdisco/share/views/ajax/admintask/undiscoveredneighbors_csv.tt
@@ -0,0 +1,18 @@
+[% USE CSV -%]
+[% CSV.dump([ 'Device Triggering Last Discovery Attempt' 'Device Port'
+              'Remote IP' 'Remote Port' 'Remote ID' 'Remote Type'
+              'Last Discovery Attempt' 'Discovery Log']) %]
+
+[% FOREACH row IN results %]
+  [% mylist = [] %]
+  [% mylist.push(row.dns || row.name || row.ip) %]
+  [% mylist.push(row.port) %]
+  [% mylist.push(row.remote_ip) %]
+  [% mylist.push(row.remote_port) %]
+  [% mylist.push(row.remote_id) %]
+  [% mylist.push(row.remote_type) %]
+  [% mylist.push(row.finished) %]
+  [% mylist.push(row.log) %]
+  [% CSV.dump(mylist) %]
+
+[% END %]