diff --git a/src/commands/registration/port.js b/src/commands/registration/port.js
index a183a74..063cbac 100644
--- a/src/commands/registration/port.js
+++ b/src/commands/registration/port.js
@@ -9,7 +9,7 @@ module.exports = {
     const rawConnection = _.get(command, 'arg', '').split(',');
     if (rawConnection.length !== 6) return this.reply(425);
 
-    const ip = rawConnection.slice(0, 4).join('.');
+    const ip = rawConnection.slice(0, 4).map((b) => parseInt(b)).join('.');
     const portBytes = rawConnection.slice(4).map((p) => parseInt(p));
     const port = portBytes[0] * 256 + portBytes[1];