SmartViper
http://www.markosweb.com/free-dns/
IPv4 DNS Server:
208.76.50.50
208.76.51.51
SmartViper is a web mining company dedicated to analyze web pages. They let anyone use their DNS servers for free. They log personal information with their website but it’s not clear what they log with their DNS service. They don’t share that information with third parties. See more in the SmartViper Public DNS.
Public DNS Server
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