diff --git a/data/interfaces/default/js/script.js b/data/interfaces/default/js/script.js
index 15f6417d..014b7174 100644
--- a/data/interfaces/default/js/script.js
+++ b/data/interfaces/default/js/script.js
@@ -281,22 +281,7 @@ function isPrivateIP(ip_address) {
 
     if (ipaddr.isValid(ip_address)) {
         var addr = ipaddr.process(ip_address);
-
-        var rangeList = [];
-        if (addr.kind() === 'ipv4') {
-            rangeList = [
-                ipaddr.parseCIDR('127.0.0.0/8'),
-                ipaddr.parseCIDR('10.0.0.0/8'),
-                ipaddr.parseCIDR('172.16.0.0/12'),
-                ipaddr.parseCIDR('192.168.0.0/16')
-            ];
-        } else {
-            rangeList = [
-                ipaddr.parseCIDR('fd00::/8')
-            ];
-        }
-
-        if (ipaddr.subnetMatch(addr, rangeList, -1) >= 0) {
+        if (addr.range() === 'loopback' || addr.range() === 'private') {
             defer.resolve();
         } else {
             defer.reject();