Anybody have experience with .ong and .gno TLDs

I have registered the domain http://www.bel.ong and http://www.bel.gno and trying to set it up on my multisite but I'm not having any luck. I've configured my dns the same as I have all my others but I just keep getting the "server not found" message. The usual DNS testing tools like Pingdom.com and Whatsmydns.net just come up blank when trying to look at these DNSs. Has anyone had any luck with getting these to work and do I need to handle them different from any other TLD.