Use badge template tag for numeric values

netbox/templates/ipam/iprange/base.html

@@ -18,7 +18,7 @@
   {% if perms.ipam.view_ipaddress %}
     <li role="presentation" class="nav-item">
       <a class="nav-link{% if active_tab == 'ip-addresses' %} active{% endif %}" href="{% url 'ipam:iprange_ipaddresses' pk=object.pk %}">
-        IP Addresses <span class="badge bg-primary">{{ object.get_child_ips.count }}</span>
+        IP Addresses {% badge object.get_child_ips.count %}
       </a>
     </li>
   {% endif %}