Looks very interesting. I occasionally have DNS problems with my ISP and can't access sites without changing my HOSTS file.

Does anyone know how the ads are served or where they appear? I'd just like to know that. (From here --- How Can OpenDNS be Free?.)

-Renegade (February 01, 2008, 04:22 PM)

You can see the full experience if you go to http://guide.opendns.com/ (or with an example: http://guide.opendns.com/?url=www.ulevitch.commo )

You get that when you visit a domain name that no longer exists or is severely broken.  Rather than the browser "host can not be found" page.

-david

and it's used for certain kinds of traffic for people who choose to use opendns.

Could you please elaborate on this or link to a source that does, David?

-nosh (February 01, 2008, 02:17 PM)

http://blog.opendns.com/2007/05/22/google-turns-the-page/

And since you're here, on a slightly different note - I believe you guys have options for people with accounts to block certain IPs marked unsafe. Is this blocking applied by default for people without accounts? Are certain IPs inaccessible while using OpenDNS that I may be able to access using my ISPs DNS? I'm asking this with regard to bittorrent activity and the effect OpenDNS may have on it. Thanks.

-nosh (February 01, 2008, 02:17 PM)

Just phishing is turned on by default.  Nothing else.  So that will let your bittorrent work flawlessly.  You can create an account and block all kinds of categories of sites and individual domains too.  We also let you fully whitelist sites as well, so even if it's a phishing site you can make an exception for it.  That's more common with certain adult sites than phishing sites, obviously. 

Our goal is to put the network administrator in control of their DNS.

Oh, just remembered, we also correct .cm to .com automatically.  You can create a (free) account and turn that off if you don't like it though.  Nobody does.  Real .cm domains continue to work just fine, only the ones which are wildcarded to a page full of ads get redirected.