shell:$ nslookup -timeout=2 -retry=1 'asia.pool.ntp.org'
Server: 1.1.1.1
Address: 1.1.1.1#53
Non-authoritative answer:
Name: asia.pool.ntp.org
Address: 162.159.200.123
Name: asia.pool.ntp.org
Address: 103.186.118.223
Name: asia.pool.ntp.org
Address: 103.152.101.249
Name: asia.pool.ntp.org
Address: 103.186.118.217
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