I’d be curious to see some DNS query results from anyone experiencing problems. Running four sample queries would probably be enough to be illuminating:
nslookup 192-168-0-10.aaaaaaaabbbbbbbbccccccccdddddddd.plex.direct
nslookup 192-168-0-10.aaaaaaaabbbbbbbbccccccccdddddddd.plex.direct 8.8.8.8
nslookup 1-2-3-4.aaaaaaaabbbbbbbbccccccccdddddddd.plex.direct
nslookup 1-2-3-4.aaaaaaaabbbbbbbbccccccccdddddddd.plex.direct 8.8.8.8
Run each of those and copy/paste the full results. For example, I get:
[Fri 13:18:04] sullman@mbp: ~
$ nslookup 192-168-0-10.aaaaaaaabbbbbbbbccccccccdddddddd.plex.direct
Server: 75.75.75.75
Address: 75.75.75.75#53
Non-authoritative answer:
Name: 192-168-0-10.aaaaaaaabbbbbbbbccccccccdddddddd.plex.direct
Address: 192.168.0.10
[Fri 13:18:11] sullman@mbp: ~
$ nslookup 192-168-0-10.aaaaaaaabbbbbbbbccccccccdddddddd.plex.direct 8.8.8.8
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
Name: 192-168-0-10.aaaaaaaabbbbbbbbccccccccdddddddd.plex.direct
Address: 192.168.0.10
[Fri 13:18:13] sullman@mbp: ~
$ nslookup 1-2-3-4.aaaaaaaabbbbbbbbccccccccdddddddd.plex.direct
Server: 75.75.75.75
Address: 75.75.75.75#53
Non-authoritative answer:
Name: 1-2-3-4.aaaaaaaabbbbbbbbccccccccdddddddd.plex.direct
Address: 1.2.3.4
[Fri 13:18:30] sullman@mbp: ~
$ nslookup 1-2-3-4.aaaaaaaabbbbbbbbccccccccdddddddd.plex.direct 8.8.8.8
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
Name: 1-2-3-4.aaaaaaaabbbbbbbbccccccccdddddddd.plex.direct
Address: 1.2.3.4