from my perspective
host -a ns1.allenintech.com
Trying "ns1.allenintech.com"
Host ns1.allenintech.com not found: 2(SERVFAIL)
And if it were visible to the world wide web, the NS port is filtered so it isn't talking to the world.
PORT STATE SERVICE VERSION
53/tcp filtered domain
Additionally NS1 doesn't exist. BUT the ip is resolvable in a way.
Name: 99-93-25-17.uvs.knvltn.sbcglobal.net
Address: 99.93.25.17
Does exist.
Unless someone else here has any other input or ideas, I'm afraid you will have to contact your upstream provider to unravel this one.
Please Advise.