last updated: Thu, 02 Feb 2012 09:52:08 GMT last validated: Fri, 03 Feb 2012 12:12:59 2777 ad server hostnames; 10734 IP addresses

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Ad server hostname list - which hostnames are included and why

Hostnames included in the list are:

Highest level domains only (ie, doubleclick.net, not ad.doubleclick.net) Not only ad servers - spyware servers, hit tracking servers, and other nasty hostnames are included Checked by hand before being added when submitted by a user Automatically checked weekly to see if they're still valid

Types of servers that will be listed:

ad servers - servers dedicated to serving up ads (these make up the majority of entries) malware servers - servers contacted by viruses, spyware, or other nasty things that routinely attack your computer tracking servers - any server that is dedicated to recording user's actions spam servers - occassionally I'll add a server that is causing a huge amount of spam, but very rarely

List integrity: hostname validation + delisting

hostnames are checked automatically every Friday at 12:00 for validity entries that for some reason fail a DNS lookup are hidden from the list entries that fail DNS lookups for 12 consecutive checks are removed from the list permanently while I make every effort to ensure that all entries in the list meet the criteria detailed above, I am fallible: if I have made a mistake, please contact me: pgl@yoyo.org

If you have any questions, you can email me at pgl@yoyo.org. Please note that I may take a long time to get back to you: occasionally it will be months; my personal life dictates how much time I can spend on this project, and while it's easy to keep the list maintained it's a lot more time-consuming to look into and respond appropriately to all the emails I get regarding the list. However, I will respond eventually (unless I'm fatally involved in a low flying helicopter accident, or something! (Or perhaps my mail gets deleted, or it gets filtered into my junk mail folder, or... well, there's a lot of reasons why I might not get back to you, now I come to think about it. But, the point is, since at least 2001 I don't think I've ever not replied to a mail about the list)).