Thanks for the help. Dealing with comcast customer support right now, they think it might be a modem issue.
This is what I get when I type the same commands.
nslookup -q=ns cloud. a.root-servers.net.
shows:
Server: a.root-servers.net.
Address: 2001:503:ba3e::2:30#53
Non-authoritative answer:
cloud nameserver = ns2.uniregistry.info.
cloud nameserver = ns3.uniregistry.net.
cloud nameserver = ns4.uniregistry.info.
cloud nameserver = ns1.uniregistry.net.
Authoritative answers can be found from:
ns1.uniregistry.net internet address = 64.96.1.1
nslookup -q=ns doranix.cloud. ns1.uniregistry.net.
shows:
Server: ns1.uniregistry.net.
Address: 2620:57:4000:1::1#53
Non-authoritative answer:
*** Can't find doranix.cloud.: No answer
Authoritative answers can be found from:
nslookup -q=a doranix.cloud. dns1.registrar-servers.com.
shows:
Server: dns1.registrar-servers.com.
Address: 2610:a1:1024::200#53
Non-authoritative answer:
Name: doranix.cloud
Address: 104.225.12.42
Name: doranix.cloud
Address: 104.225.12.29