shell:$ nslookup -timeout=2 -retry=1 'neir.btrc.gov.bd'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	neir.btrc.gov.bd
Address: 182.252.71.246
Name:	neir.btrc.gov.bd
Address: 182.252.71.118