last updated: Thu, 26 Nov 2020 15:36:06 GMT last validated: Fri, 27 Nov 2020 12:05:59 3559 ad server hostnames; 8866 IP addresses
PATREON: patreon.com/blocklist
main: [ about the list | how it works | four easy steps | latest news | submit hostnames | ways to use the list | lookup ]
tools: [ hosts file -> BIND converter | BIND zone file creator | miscellaneous scripts | software archive | links ]
more: [ main page | site news | list of formats | policy | RSS: updates, news | other bits and pieces | email ]
Ad server domain list - which hostnames are included and why
Domains 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 servers that enable these technologies
  • Other nasty hostnames are included such as some malware domains etc.
  • 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
  • tracking servers - any server that is dedicated to recording users' actions or enabling it
  • malware servers - servers contacted by viruses, spyware, or other nasty things that routinely attack and/or hijack your computer and its resources
  • anti-adblock servers - servers dedicated to blocking adblock technologies
  • spam servers - occassionally I'll add a server that is causing a huge amount of spam, but very rarely
  • other nasty stuff - at my discretion, anything else that negatively impacts users
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 6 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)).