shell:$ nslookup -timeout=2 -retry=1 'asia.pool.ntp.org'
Server: 75.98.161.224
Address: 75.98.161.224#53
Non-authoritative answer:
Name: asia.pool.ntp.org
Address: 103.186.118.217
Name: asia.pool.ntp.org
Address: 51.16.235.6
Name: asia.pool.ntp.org
Address: 165.154.232.19
Name: asia.pool.ntp.org
Address: 103.186.118.216
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