126.96.36.199 it the Pathfinder traversal server and is what you should register to.
You can try to directly register 188.8.131.52 (actual Gatekeeper) see if it changes the message.
From: School Information Technology Discussion [mailto:[log in to unmask]] On Behalf Of Ben Leslie
Sent: Tuesday, December 9, 2014 11:53 AM
To: [log in to unmask]
Subject: Re: LNV Connection Issue
I don't have the LNV system setup right now but based on our old documentation the IP address we're using for the gatekeeper is either 184.108.40.206 or 220.127.116.11.
Is there a new/updated gatekeeper I should be using?