OpenDNS is the leading provider of security and infrastructure services that make the Internet safer through integrated Web content filtering, anti-phishing and DNS. OpenDNS services enable consumers and network administrators to secure their networks from online threats, reduce costs and enforce Internet-use policies. OpenDNS is used today by millions of users and organizations around the world. More info »
OpenDNS is many things but "more reliable" is not one of them. Use free DNSbench tool to verify this reality for yourself.
I can easily block unwanted website or domain with this service, too. But first you must create OpenDNS account for free.
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