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General Topics

What is a Broadband Internet Connection?

What is Broadband?

Broadband Internet service truly is the most used form of Internet access because of its high access speeds; it is offered in four different forms, DSL (or Digital Subscriber Line), also fiber-optic, cable, and satellite. The old dial-up connection is the only non-broadband internet service available, and even though it is cheaper, most Internet users…

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Unsubscore / Lashback Details (ubl.unsubscore.com)

ubl.unsubscore.com Summary Status: Active Terms: Free Zones: 1 Website: blacklist.lashback.com/ Removal: blacklist.lashback.com/ Lookup: blacklist.lashback.com/ Background ubl.unsubscore.com, whose parent company is LashBack uses what is called an unsubscribe intelligence database for the creation and maintenance of it’s DNS blacklist. LashBack has been in operation since 2003. Spammers deploy what are known as suppression lists, also known…

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UCE Protect

Summary Status: Active Terms: Free Zones: 3 Website: www.uceprotect.net Removal: www.uceprotect.net/en/index.php?m=7&s=0 Lookup: www.uceprotect.net/en/rblcheck.php Contact: www.uceprotect.net/en/index.php?m=8&s=0 Background uceprotect.net is a DNS blacklisting service that is comprised of three distinct zones: dnsbl-1.uceprotect.net, dnsbl-2.uceprotect.net, and dnsbl-3.uceprotect.net. Each zone has different listing criteria, all of which are extremely important to understand before using any zone within the service. While…

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The Passive Spam Block List

Summary Status: Active Terms: Free Zones: 1 Website: psbl.org Lookup: psbl.org/listing Removal: psbl.org/remove FAQ: psbl.org/faq/ Background psbl.surriel.com, also known as The Passive Spam Block List, is a relatively new blacklist to the DNSBL scene. Like most other blacklists, pbsl.surriel.com uses spamtraps and honeypots to gather it’s listing criteria. pbsl.surriel.com is an IP address based block…

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The Spamhaus Project

Summary Status: Active Terms: Free Zones: 6 Website: www.spamhaus.org Lookup and Removal: www.spamhaus.org/lookup/ About: www.spamhaus.org/organization/ FAQ: www.spamhaus.org/faq/ Contact: www.spamhaus.org/organization/contacts/ Background The Spamhaus Project is one of the largest anti-spam DNS blacklist services known. Founded in 1998, Spamhaus has operations in Geneva, Switzerland, and London in addition to the 28 investigators and forensic specialists located in…

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The Spamcop Blacklist

Summary Status: Active Terms: Free Zones: 1 Website: www.spamcop.net Lookup: www.spamcop.net/bl.shtml Removal: www.spamcop.net/fom-serve/cache/298.html Contact: www.spamcop.net/fom-serve/cache/401.html Background Spamcop.net is one of the oldest DNSBL’s of the many that are offered today. Their services were first publicly offered in 1992, and continue on to this day. On January 4, 2007 IronPort agreed to become a division of…

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The Spam and Open Relay Blocking System (SORBS)

Summary Status: Active Terms: Free and Paid Services Zones: 17 Website: www.sorbs.net Removal: www.sorbs.net/overview.shtml Lookup: www.sorbs.net/lookup.shtml FAQ: www.sorbs.net/faq Contact: www.sorbs.net/cgi-bin/mail 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…

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S5H Blocking List

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…

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