http://www.websiteoptimization.com/
https://bobcares.com/blog/how-to-increase-your-server-speed/2/
https://www.webpagetest.org/forums/showthread.php?tid=14652
https://www.ultratools.com/tools/dnsHostingSpeedResult
https://code.google.com/archive/p/namebench/
http://www.tcpiputils.com/
http://www.dnsperf.com/
https://www.blogsynthesis.com/
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