General Topics
Summary Status: Shut down Background S.O.R.B.S., also known as The Spam and Open Relay Blocking System (SORBS), has been providing DNS based spam blocking services since 1992. In it’s infancy, it served as a small daemon that parsed through emails send via open relays and proxy’s, which in turn would add those IP addresses to…
[Read More]Summary Status: Active Terms: Free Zones: 1 Website: www.usenix.org.uk/content/rbl.html Lookup or Removal: www.usenix.org.uk/content/rblremove Contact: www.usenix.org.uk/content/rblremovehelp Background The list is an aggregate of abusive hosts and spam sources. We take the view that de-listing should be a simple matter once the activity ceases and rely on the end users to notify us once the activity has…
[Read More]Summary Status: Offline as of 3/1/2013 Terms: Free with no charge mailing list membership. Zones: 4 Website: www.njabl.org [Offline] Lookup: www.njabl.org/lookup.html [Offline] Removal: www.njabl.org/remove.html [Offline] Contact: www.njabl.org/faq.html [Offline] Background NJABL, or Not Just Another Bogus List is a DNS based blacklist. NJABL.org started out of frustration with the amount of spam coming into the networks…
[Read More]Summary Status: Offline as of 2016 Terms: Free Zones: 1 Website: www.megarbl.net Lookup www.megarbl.net/check Removal www.megarbl.net/account/inscription.php FAQ: www.megarbl.net/faq.php Background MegaRBL is a DNS based blacklist. It’s a French website whose goal is to offer its service for free to filter the spam that can be received every day. It proposes an RBL (Real-time Blackhole List)…
[Read More]Summary Status: Active Terms: Free Zones: 1 Website: wiki.junkemailfilter.com/index.php/Spam_DNS_Lists Removal: ipadmin.junkemailfilter.com/remove.php Lookup: ipadmin.junkemailfilter.com/remove.php Background Different lists have different criteria for listing that to a large extent reflects the personality of the people behind the list. Some lists are angry lists where they list everything and if you got on their list it’s your fault. There…
[Read More]Summary Status: Offline as of 1/1/2013 Terms: Free Zones: 13 Website: www.five-ten-sg.com/blackhole.php Background Information on blackholes.five-ten-sg.com is slightly sparse. According to independent research, blackholes.five-ten-sg.com has been run by the 510 Software Group since February of 2001. This DNS blacklist is a culmination of 13 total sub lists, all operating under the same zone, each returning…
[Read More]Summary Status: Offline Terms: Free by request Zones: 1 Website: Removal: Reporting: Background bl.emailbasura.org appears to be very similar to other DNS based blacklists, with one exception. bl.emailbasura.org allows any end user to report spam directly to their website. The website does not list if that report will immediately generate the listing of the offending…
[Read More]Summary Status: Active Terms: Free Zones: 1 Website: cbl.abuseat.org Removal: cbl.abuseat.org/lookup.cgi Lookup: cbl.abuseat.org/lookup.cgi Background The CBL, otherwise known as The Composite Blocking List is a DNS based blacklist similar to the majority of other DNS based blacklists. The CBL does not list URL’s or URI’s, and like other DNSBL’s lists large quantities of IP addresses.…
[Read More]Summary Status: Active Terms: Free Zones: 3 Website: www.team-cymru.org/bogon-reference.html Background bogons.cymru.com is several things, one of which is a DNS based blacklist. Before you can use bogons.cymru.com as a DNS blacklist, it is important to understand what a “bogon” actually is. A bogon is in internet address prefix that should never appear in an IP…
[Read More]Summary Status: Active Terms: Free by request Zones: 1 Website: www.barracudacentral.org/rbl Lookup: www.barracudacentral.org/lookups Removal: www.barracudacentral.org/rbl/removal-request Contact: www.barracudacentral.org/contact/feedback Background The Barracuda Reputation Block List, also known as The BRBL, has been in public deployment since 2008. Barracuda Networks is a manufacturer of a hardware anti-spam appliances. Reports have been made that The BRBL is highly accurate,…
[Read More]Summary Status: Active Terms: Free Zones: 1 Website: www.backscatterer.org Lookup: www.backscatterer.org/?target=test Removal: www.backscatterer.org/?target=test Contact: www.backscatterer.org/?target=contact Background The Backscatterer List at ips.backscatter.org, working in cooperation with uceprotect.net is different than most DNS based blacklists. The Backscatterer List does not maintain a list of IP addresses that have been seen spamming, sending email to honeypots, spamtraps, or…
[Read More]Summary Status: Active Terms: Free Zones: 2 Website: www.apews.org Lookup www.apews.org FAQ: www.apews.org/?page=faq Background Most spam advisory and blocking systems work after the fact. There is a time lag between the spammer setting up shop, spamming millions, and getting netblocks listed by these systems. APEWS identifies known spammers and spam operations, listing them as soon…
[Read More]Summary Status: Offline as of late 2014 Terms: Free Zones: 1 Website: ahbl.org Lookup or Removal: ahbl.org/lktool FAQ: ahbl.org/documents Contact: ahbl.org/aboutus Background dnsbl.ahbl.org, otherwise known as The Abusive Hosts Blocking List is a DNS based blacklist. The AHBL started in 2003, and is a division of the Summit Open Source Development Group. According to The…
[Read More]You don’t have to worry about VPN protocols if you’re researching VPNs for basic safety and security. The default protocol should work perfectly fine for you.
[Read More]There are a variety of geolocation database providers that can help determine a user’s location. Geolocation Fields ComparisonGeolocation Accuracy Comparison IP2Location IP2Location provides services focused on IP geolocation, enabling businesses to identify the geographic location of an IP address, including details like country, city, and coordinates. They also offer proxy and VPN detection to help…
[Read More]Domain Name System Blacklists, also known as DNSBL’s or DNS Blacklists, are spam blocking lists. They allow a website administrator to block messages from specific systems that have a history of sending spam. These lists are based on the Internet’s Domain Name System, or DNS. It converts numerical IP addresses such as 140.239.191.10 into domain…
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