shell:$ nslookup -timeout=2 -retry=1 'debian.pool.ntp.org'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	debian.pool.ntp.org
Address: 144.202.62.209
Name:	debian.pool.ntp.org
Address: 38.134.40.65
Name:	debian.pool.ntp.org
Address: 50.205.57.38
Name:	debian.pool.ntp.org
Address: 104.234.61.117