diff --git a/ipaddresses.php b/ipaddresses.php
index 03dfa2f..0160180 100644
--- a/ipaddresses.php
+++ b/ipaddresses.php
@@ -118,6 +118,11 @@ class ipaddresses
       }
       return implode (":", $ipnew);
     }
+    elseif (substr_count ($ip, ".") === 31)
+    {
+      // Full IPv6 with dots
+      return $ip;
+    }
     elseif (substr_count ($ip, ".") === 3)
     {
       // IPv4