pi@raspberrypi:~ $ dig +short -t txt versions.pi-hole.net @ns1.pi-hole.net
dig: couldn't get address for 'ns1.pi-hole.net': failure

pi@raspberrypi:~ $ nslookup ns1.pi-hole.net
;; connection timed out; no servers could be reached

pi@raspberrypi:~ $ nslookup ns1.pi-hole.net 1.1.1.1
;; connection timed out; no servers could be reached