Does ns.ardc.org have an access policy restricting traffic to only IPs with a DNS entry (i.e. Intra-AMPRNet only)?

That differs from what I've been told, so I wish ask.

I'm having a difficult time with one of my valid AMPRNet IPs and have been struggling for days. I only have success with IPS having DNS entries.

73,

Lynwood

KB3VWG