diff --git a/netbox/ipam/views.py b/netbox/ipam/views.py
index 3a4c36173..0ba9903b8 100644
--- a/netbox/ipam/views.py
+++ b/netbox/ipam/views.py
@@ -504,8 +504,9 @@ class PrefixPrefixesView(View):
         ).annotate_depth(limit=0)
 
         # Annotate available prefixes
-        if child_prefixes:
-            child_prefixes = add_available_prefixes(prefix.prefix, child_prefixes)
+        if request.GET.get('show_available', None):
+            if child_prefixes:
+                child_prefixes = add_available_prefixes(prefix.prefix, child_prefixes)
 
         prefix_table = tables.PrefixDetailTable(child_prefixes)
         if request.user.has_perm('ipam.change_prefix') or request.user.has_perm('ipam.delete_prefix'):
@@ -544,7 +545,8 @@ class PrefixIPAddressesView(View):
         ipaddresses = prefix.get_child_ips().select_related(
             'vrf', 'interface__device', 'primary_ip4_for', 'primary_ip6_for'
         )
-        ipaddresses = add_available_ipaddresses(prefix.prefix, ipaddresses, prefix.is_pool)
+        if request.GET.get('show_available', None):
+            ipaddresses = add_available_ipaddresses(prefix.prefix, ipaddresses, prefix.is_pool)
 
         ip_table = tables.IPAddressTable(ipaddresses)
         if request.user.has_perm('ipam.change_ipaddress') or request.user.has_perm('ipam.delete_ipaddress'):
diff --git a/netbox/templates/ipam/prefix.html b/netbox/templates/ipam/prefix.html
index 0e3aff6b0..5f8431d89 100644
--- a/netbox/templates/ipam/prefix.html
+++ b/netbox/templates/ipam/prefix.html
@@ -52,6 +52,12 @@
     </div>
     <h1>{% block title %}{{ prefix }}{% endblock %}</h1>
     {% include 'inc/created_updated.html' with obj=prefix %}
+    <div class="pull-right">
+        <div class="btn-group" role="group">
+            <a href="{{ request.path }}{% querystring request show_available=None %}" class="btn btn-default{% if not request.GET.show_available %} active{% endif %}">Hide available</a>
+            <a href="{{ request.path }}{% querystring request show_available='on' %}" class="btn btn-default{% if request.GET.show_available %} active{% endif %}">Show available</a>
+        </div>
+    </div>
     <ul class="nav nav-tabs" style="margin-bottom: 20px">
         <li role="presentation"{% if not active_tab %} class="active"{% endif %}>
             <a href="{% url 'ipam:prefix' pk=prefix.pk %}">Prefix</a>