Vista - KMS Server not listening on port 1688

I have setup a KMS on a 2008 server.
Please find the output for command slmgr -dlv

C:\Windows\system32>cscript slmgr.vbs -dlv
Microsoft (R) Windows Script Host Version 5.7
Copyright (C) Microsoft Corporation. All rights reserved.

Software licensing service version: 6.0.6001.18000
Name: Windows Server(R), ServerStandard edition
Description: Windows Operating System - Windows Server(R), VOLUME_MAK_B channel
Activation ID: bb1d27c4-959d-4f82-b0fd-c02a7be54732
Application ID: 55c92734-d682-4d71-983e-d6ec3f16059f
Extended PID: 55041-00152-105-000223-03-1033-6001.0000-0692009
Installation ID: 002130865256169333834956235054808772776524749346796335
Processor Certificate URL: http://go.microsoft.com/fwlink/?LinkID=48189
Machine Certificate URL: http://go.microsoft.com/fwlink/?LinkID=48190
Use License URL: http://go.microsoft.com/fwlink/?LinkID=48192
Product Key Certificate URL: http://go.microsoft.com/fwlink/?LinkID=48191
Partial Product Key: TKGGM
License Status: Licensed

I then run:
netstat -a -n -o > c:\ports.txt
Open it in notepad and search for 1688.
There is nothing listening on TCP 1688... Yes I have opened up the incoming firewall rule for 1688 TCP for the Key Management Service in Windows Firewall.
Additionally the script also did not create an SRV record in DNS for _VLMCS._TCP.ourdomain.local, this I can manually do.. but first I need to know why the KMS is not listening on 1688?
Can someone please provide some assistance?
Thanks.
Sreehari