shell:$ nslookup -timeout=2 -retry=1 'bd.airtel.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
Name:	bd.airtel.com
Address: 202.134.12.146
;; communications error to 127.0.0.53#53: timed out
;; no servers could be reached