shell:$ nslookup -timeout=2 -retry=1 'cellcdns.duckdns.org'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
Name:	cellcdns.duckdns.org
Address: 43.251.180.254
;; communications error to 127.0.0.53#53: timed out
;; no servers could be reached