Blacklists Compared

14 August 2010

[ Fighting Spam | Dialup Zones | Blacklists Compared | Current Blacklist Comparison | Sendmail Configuration ]

Survey results for all known public IP-based DNS blacklists. Lookups were done on connecting IP addresses. The "union of most IP zones" line excludes the hostkarma.junkemailfilter.com (all results but 127.0.0.2, 127.0.0.3, and 127.0.0.4), exemptions.ahbl.org, query.bondedsender.org, list.dnswl.org, accredit.habeas.com, iadb.isipp.com, iadb2.isipp.com, and wl.mailspike.net zones because they are not blacklists. Because it is too aggressive to be widely useful the l2.apews.org zone is also excluded from the union.

HitsDNS Zone
198926(total number of IP addresses tested, including 174 at SDSC)
195989(union of most IP zones)
184086zen.spamhaus.org (union of all results)
172002b.barracudacentral.org
167351cbl.abuseat.org
167317zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
164961l2.apews.org
142938hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
140280psbl.surriel.com
139374dnsbl-1.uceprotect.net
135039bl.spameatingmonkey.net
128858dnsbl-2.uceprotect.net
126545dnsbl-3.uceprotect.net
122920ubl.unsubscore.com
108029zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
107310bl.mailspike.net (union of all results)
98377dnsbl.sorbs.net (union of all results)
88138bl.tiopan.com
87252hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
77221spam.dnsbl.sorbs.net
64439dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
62601bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
59585blackholes.five-ten-sg.com (union of all results)
49804blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
48575dnsbl.sorbs.net (result 127.0.0.10 = dialup)
47685bl.score.senderscore.com
46222bl.spamcop.net
42868db.wpbl.info
38244bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
38022zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
29316ix.dnsbl.manitu.net
24640no-more-funn.moensted.dk (union of all results)
21855dnsbl.inps.de
21790mail-abuse.blacklist.jippg.org
20506bl.mailspike.net (result 127.0.0.11 = very bad reputation)
18746no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
18543bl.mailspike.net (result 127.0.0.12 = bad reputation)
11993hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
8507blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
7551dnsbl.ahbl.org (union of all results)
6366dnsbl.ahbl.org (result 127.0.0.4 = spam source)
5889dnsbl.sorbs.net (result 127.0.0.6 = spam source)
5574no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5285ips.backscatterer.org
5207korea.services.net
4941bl.spamcannibal.org
4157list.dnswl.org (not a blacklist!)
4078spamsources.fabel.dk
3664hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2874wl.mailspike.net (union of all results) (not a blacklist!)
2229tr.countries.nerd.dk
1900hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1866dnsbl.njabl.org (union of all results)
1761wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
1648dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1244blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1122dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1066wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
846hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
514accredit.habeas.com (not a blacklist!)
491l2.bbfh.ext.sorbs.net
446aspews.ext.sorbs.net
441zen.spamhaus.org (union of SBL and SBLCSS results)
433zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
412query.bondedsender.org (not a blacklist!)
276no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
246l1.bbfh.ext.sorbs.net
139dnsbl.njabl.org (result 127.0.0.2 = open relay)
136tor.dnsbl.sectoor.de (union of all results)
135tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
134iadb2.isipp.com (not a blacklist!)
125no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
104iadb.isipp.com (not a blacklist!)
98hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
79dnsbl.njabl.org (result 127.0.0.4 = spam source)
64no-more-funn.moensted.dk (result 127.0.0.9 = misc)
63dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
56bl.deadbeef.com
47wl.mailspike.net (result 127.0.0.19 = very good reputation) (not a blacklist!)
29blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
29spamguard.leadmon.net (union of all results)
27spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
12dnsbl-0.uceprotect.net
12multi.surbl.org
11zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
8zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
6multi.uribl.com (result 127.0.0.2 = spam resource)
6multi.uribl.com (union of all results)
4hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
2spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
Survey results for all known public domain-name-based DNS blacklists. Lookups were done on the domain names of connecting IP addresses. The "union of most domain zones" line includes data from the hostkarma.junkemailfilter.com zone only when the results are 127.0.0.2, 127.0.0.3, or 127.0.0.4 because other results are not blacklists.

HitsDNS Zone
198926(total number of IP addresses whose names were tested, including 174 at SDSC)
123134hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
111481hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
96040(union of most domain zones)
84417l1.apews.org
78192abuse.rfc-ignorant.org
34629whois.rfc-ignorant.org (union of all results)
24642whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
13026hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
9987whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
4302hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
4279hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
565hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
559dbl.spamhaus.org
491urired.spameatingmonkey.net
347hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
307hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
130hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
89rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
89rhsbl.sorbs.net (union of all results)
65postmaster.rfc-ignorant.org
47rhsbl.ahbl.org
36multi.surbl.org
36dsn.rfc-ignorant.org (zone not intended for this use)
36bogusmx.rfc-ignorant.org
31multi.uribl.com (result 127.0.0.2 = spam resource)
31multi.uribl.com (union of all results)
26dob.sibl.support-intelligence.net
20fresh.spameatingmonkey.net
16hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
3bl.deadbeef.com
Survey results for all known public domain-name-based DNS blacklists. Lookups were done on SMTP sender domains. The "union of most domain zones" line includes data from the hostkarma.junkemailfilter.com zone only when the results are 127.0.0.2, 127.0.0.3, or 127.0.0.4 because other results are not blacklists.

HitsDNS Zone
61949(total number of domains tested, including 155 at SDSC)
58710hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
11694(union of most domain zones)
6254hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
4348whois.rfc-ignorant.org (union of all results)
4072whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3019abuse.rfc-ignorant.org
2998hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2801hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
2496urired.spameatingmonkey.net
1776postmaster.rfc-ignorant.org
1297dbl.spamhaus.org
1244hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1095l1.apews.org
978multi.surbl.org
821hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
774bogusmx.rfc-ignorant.org
731multi.uribl.com (union of all results)
721multi.uribl.com (result 127.0.0.2 = spam resource)
661hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
314dsn.rfc-ignorant.org
276whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
29hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
26hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
22rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
22rhsbl.sorbs.net (union of all results)
17hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
16rhsbl.ahbl.org
15dob.sibl.support-intelligence.net
11ex.dnsbl.org
10multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
4fresh.spameatingmonkey.net
1bl.deadbeef.com
This document was last updated by Jeff Makey <jeff@sdsc.edu> on 19 August 2010.