The World's Largest Internet Security Network

Trusted by millions of homes, businesses and schools, it’s the easiest way to control
your Internet experience.

Cloud-delivered network security for any device, anywhere, anytime.

The safest, smartest, fastest and most reliable DNS on the planet.

The most trusted brands choose OpenDNS

  • BP
  • Nvidia
  • Xerox
  • Romanos Macaroni Grill
  • George Washington University
  • Underwriters Laboratories
  • Specialized
  • Coldwell Banker Prime Properties
  • Eastern Mountain Sports

New at OpenDNS

  • Extend FireEye’s threat protection


    Learn how the integration of FireEye with OpenDNS extends Advanced Threat Protection beyond the network perimeter.

  • Predictive security everywhere

    Secure every device on and off
    the network from emerging threats.

  • Rethinking Cyber-Security in the Age of Relentless Attacks

    Learn why prevention is no match for persistence and how to take a more pragmatic approach to security.

OpenDNS Blog

  • Adrienne Merrick

    22 Jul

    Spoiler Alert! You Are Under Attack

    by Adrienne Merrick

    You may have heard that targeted attacks are on the rise—businesses are constantly under attack. The challenge that security professionals … face is too much noise, and at the end of the day, it’s pretty hard to determine…

    Read More
  • Chris Frost

    16 Jul

    What Is the Difference between Authoritative and Recursive DNS Nameservers?

    by Chris Frost

    DNS Overview The Domain Name System (DNS) is one of the most essential parts of the Internet’s infrastructure. By … using DNS, you can connect to a website like without having to know the website’s IP address. (After…

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  • Ashley Williams

    11 Jul

    Creating a Culture of Security Awareness

    by Ashley Williams

    If you follow cyber security news these days, you’ll find that there’s a lot to keep up on. Threats exist … everywhere. Just in 2014 alone, we’ve heard about the Heartbleed vulnerability in OpenSSL, the proliferation of…

    Read More
  • Barry Fisher

    8 Jul

    Targeted Attacks by Penguins, Cyborgs and Athletes

    by Barry Fisher

    It’s All About The Data Today, data defines our personal identities, companies’ intellectual property, and businesses’ reputations. Your credit ratings, … a company’s competitive advantage, and even stock prices are damaged…

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  • Kara Drapala

    20 Jun

    You Keep Using That Word. I Do Not Think It Means What You Think It Means.

    by Kara Drapala

    Buzzwords are the worst, and unfortunately the security industry is rife with jargon—terms that either don’t mean anything in the … first place or try ineffectively to dress up un-sexy verbiage for marketing purposes. You’ll…

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  • Barry Fisher

    12 Jun

    Why Ads and Security Don’t Mix

    by Barry Fisher

    Our CEO and founder, David Ulevitch, recently announced that OpenDNS would be turning off ads. The main reason is because, … as David says, “ads and security don’t mix”. In the last few years, “Malvertising” (malicious…

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