shell:$ nslookup -timeout=2 -retry=1 'www.f2pool.com'
Server: 1.1.1.1
Address: 1.1.1.1#53
Non-authoritative answer:
www.f2pool.com canonical name = www.f2pool.com.cdn.cloudflare.net.
Name: www.f2pool.com.cdn.cloudflare.net
Address: 104.18.41.100
Name: www.f2pool.com.cdn.cloudflare.net
Address: 172.64.146.156
Name: www.f2pool.com.cdn.cloudflare.net
Address: 2a06:98c1:3101::ac40:929c
Name: www.f2pool.com.cdn.cloudflare.net
Address: 2a06:98c1:3103::6812:2964
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