The DNS servers for plex.direct appear to be unreachable via IPv6.
$ dig +noall +answer plex.direct. NS
plex.direct. 268 IN NS ns-plexdirect.plex.tv.
plex.direct. 268 IN NS ns1-plexdirect.plex.bz.
plex.direct. 268 IN NS ns2-plexdirect.plex.bz.
plex.direct. 268 IN NS ns1-plexdirect.plex.tv.
$ dig +noall +answer ns-plexdirect.plex.tv. AAAA
ns-plexdirect.plex.tv. 60 IN AAAA 2a05:d018:8af:2306::155e
ns-plexdirect.plex.tv. 60 IN AAAA 2a05:d018:8af:2307::26c5
$ dig +noall +answer ns1-plexdirect.plex.tv. AAAA
ns1-plexdirect.plex.tv. 60 IN AAAA 2600:1f18:5538:480b::3195
ns1-plexdirect.plex.tv. 60 IN AAAA 2600:1f18:5538:480a::9263
$ dig +noall +answer ns1-plexdirect.plex.bz. AAAA
ns1-plexdirect.plex.bz. 60 IN AAAA 2600:1f18:5538:480b::3195
ns1-plexdirect.plex.bz. 60 IN AAAA 2600:1f18:5538:480a::9263
$ dig +noall +answer ns2-plexdirect.plex.bz. AAAA
ns2-plexdirect.plex.bz. 60 IN AAAA 2a05:d018:8af:2306::155e
ns2-plexdirect.plex.bz. 60 IN AAAA 2a05:d018:8af:2307::26c5
$ dig -6 plex.direct. SOA @ns-plexdirect.plex.tv.
;; communications error to 2a05:d018:8af:2306::155e#53: timed out
;; communications error to 2a05:d018:8af:2306::155e#53: timed out
;; communications error to 2a05:d018:8af:2306::155e#53: timed out
;; communications error to 2a05:d018:8af:2307::26c5#53: timed out
; <<>> DiG 9.18.39-0ubuntu0.24.04.3-Ubuntu <<>> -6 plex.direct. SOA @ns-plexdirect.plex.tv.
;; global options: +cmd
;; no servers could be reached
$ dig -6 plex.direct. SOA @ns1-plexdirect.plex.tv.
;; communications error to 2600:1f18:5538:480b::3195#53: timed out
;; communications error to 2600:1f18:5538:480b::3195#53: timed out
;; communications error to 2600:1f18:5538:480b::3195#53: timed out
;; communications error to 2600:1f18:5538:480a::9263#53: timed out
; <<>> DiG 9.18.39-0ubuntu0.24.04.3-Ubuntu <<>> -6 plex.direct. SOA @ns1-plexdirect.plex.tv.
;; global options: +cmd
;; no servers could be reached
Currently, resolution via IPv4 seems to work fine.
$ dig -4 plex.direct. SOA @ns-plexdirect.plex.tv.
; <<>> DiG 9.18.39-0ubuntu0.24.04.3-Ubuntu <<>> -4 plex.direct. SOA @ns-plexdirect.plex.tv.
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43125
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;plex.direct. IN SOA
;; AUTHORITY SECTION:
plex.direct. 300 IN SOA ns-plexdirect.plex.tv. dns-admin.plex.tv. 0 172800 7200 1209600 3600
;; Query time: 154 msec
;; SERVER: 18.202.136.15#53(ns-plexdirect.plex.tv.) (UDP)
;; WHEN: Wed Apr 08 16:32:05 PDT 2026
;; MSG SIZE rcvd: 114