shell:$ nslookup -timeout=2 -retry=1 'debian.pool.ntp.org'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
Name:	debian.pool.ntp.org
Address: 54.39.104.183
Name:	debian.pool.ntp.org
Address: 23.132.28.58
Name:	debian.pool.ntp.org
Address: 216.232.132.18
Name:	debian.pool.ntp.org
Address: 146.190.241.218