Several organizations maintain and publish blocklists a. Many of these lists are available for free; some have usage restrictions:. The lists differ in format, goals, and data-collection methodology. Be sure to read about the list before making use of it. Did you notice any blocklist sources that should be on this list, but are missing? Sign up for my newsletter if you'd like to receive a note from me whenever I publish an article or embark on a project. Lenny Zeltser is a seasoned business and technology leader with extensive information security experience.
Lenny frequently speaks at industry events, writes articles and has co-authored books. Many of these lists are available for free; some have usage restrictions: Free; registration required by contacting Arbor Blackweb Project: Free; registration required; optimized for Bro Certly Guard: Free; programmatic access; restrictions apply hpHosts File: Free; limited automation on request Malc0de Database: Free Malware Domain Blocklist: Free for non-commercial use MalwareDomainList.
Commercial service; free licensing options may be available OpenPhish: Phishing sites; free for non-commercial use PhishTank Phish Archive: Free; registration required to view more than 25 IPs Risk Discovery: Free programmatic access, based on HoneyPy data Scumware. Free; registration and approval required Squidblacklist. Paid and free options available VoIP Blacklist: Free The lists differ in format, goals, and data-collection methodology.
Updated November 10, Did you like this? Follow me for more of the good stuff. About the Author Lenny Zeltser is a seasoned business and technology leader with extensive information security experience.More...