To access the internet you need a proper and speedy DNS server that can quickly translate domain names (like google.com) into IP addresses (like 209.85.135.103). Depending on how quick the DNS server is, your internet browsing experience can be snappy or dreadful.
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Test Your DNS Servers - RouterSecurity.org
Wrapping Up: Best DNS Servers. All in all, each DNS service shared here has its own advantages and geared to a specific use case. If you need basic security and speed, choose CloudFare DNS. For parental control, speed, and basic security choose OpenDNS or SafeDNS (Paid).
IANA — Root Servers
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