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: 103.186.118.222
Name: asia.pool.ntp.org
Address: 119.28.206.193
Name: asia.pool.ntp.org
Address: 103.186.118.221
Name: asia.pool.ntp.org
Address: 103.186.118.215
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