Blacklists Compared

19 June 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
196971(total number of IP addresses tested, including 236 at SDSC)
193744(union of most IP zones)
183478b.barracudacentral.org
180721zen.spamhaus.org (union of all results)
166619l2.apews.org
149856zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
149711cbl.abuseat.org
144876bl.mailspike.net (union of all results)
144548hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
138022psbl.surriel.com
137831dnsbl-1.uceprotect.net
131209dnsbl-2.uceprotect.net
127967bl.spameatingmonkey.net
125860dnsbl-3.uceprotect.net
116088bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
108762zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
106868dnsbl.sorbs.net (union of all results)
93414ubl.unsubscore.com
86400hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
71730dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
70152bl.tiopan.com
62912bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
53604blackholes.five-ten-sg.com (union of all results)
52435spam.dnsbl.sorbs.net
49723dnsbl.sorbs.net (result 127.0.0.10 = dialup)
46099bl.spamcop.net
45607blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
43067bl.score.senderscore.com
42073db.wpbl.info
34331zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
28249ix.dnsbl.manitu.net
26950no-more-funn.moensted.dk (union of all results)
20112mail-abuse.blacklist.jippg.org
19798no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
17242dnsbl.inps.de
14983bl.mailspike.net (result 127.0.0.12 = bad reputation)
13501hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
7676bl.mailspike.net (result 127.0.0.11 = very bad reputation)
6904no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
6651blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
5903korea.services.net
5551dnsbl.ahbl.org (union of all results)
5344bl.spamcannibal.org
4245spamsources.fabel.dk
4194list.dnswl.org (not a blacklist!)
3452dnsbl.ahbl.org (result 127.0.0.4 = spam source)
3434ips.backscatterer.org
3003hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2636wl.mailspike.net (union of all results) (not a blacklist!)
2054wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
2042dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1999hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1954dnsbl.njabl.org (union of all results)
1831tr.countries.nerd.dk
1711dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1319blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1273hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
752dnsbl.sorbs.net (result 127.0.0.6 = spam source)
536wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
518accredit.habeas.com (not a blacklist!)
434query.bondedsender.org (not a blacklist!)
418aspews.ext.sorbs.net
265zen.spamhaus.org (union of SBL and SBLCSS results)
254zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
240no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
162l2.bbfh.ext.sorbs.net
154dnsbl.njabl.org (result 127.0.0.2 = open relay)
149iadb2.isipp.com (not a blacklist!)
121tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
121tor.dnsbl.sectoor.de (union of all results)
118iadb.isipp.com (not a blacklist!)
117hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
107no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
104no-more-funn.moensted.dk (result 127.0.0.9 = misc)
91l1.bbfh.ext.sorbs.net
89dnsbl.njabl.org (result 127.0.0.4 = spam source)
59bl.deadbeef.com
56dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
46wl.mailspike.net (result 127.0.0.19 = very good reputation) (not a blacklist!)
29dnsbl-0.uceprotect.net
27blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
16zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
11zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
11spamguard.leadmon.net (union of all results)
10multi.surbl.org
8spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
5multi.uribl.com (result 127.0.0.2 = spam resource)
5hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
5multi.uribl.com (union of all results)
3spamguard.leadmon.net (result 127.0.0.8 = open proxy)
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)

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
196971(total number of IP addresses whose names were tested, including 236 at SDSC)
127854hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
117834hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
99489(union of most domain zones)
91651l1.apews.org
84832abuse.rfc-ignorant.org
37455whois.rfc-ignorant.org (union of all results)
27595whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
11994hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
9860whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3148hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2649hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
545hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
437urired.spameatingmonkey.net
431hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
219dbl.spamhaus.org
151hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
76hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
70postmaster.rfc-ignorant.org
50dsn.rfc-ignorant.org (zone not intended for this use)
46rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
46rhsbl.sorbs.net (union of all results)
42rhsbl.ahbl.org
41bogusmx.rfc-ignorant.org
20dob.sibl.support-intelligence.net
17multi.surbl.org
15fresh.spameatingmonkey.net
13multi.uribl.com (result 127.0.0.2 = spam resource)
13multi.uribl.com (union of all results)
3hostkarma.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
64374(total number of domains tested, including 228 at SDSC)
62074hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
9352(union of most domain zones)
6048hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
2909hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
2771abuse.rfc-ignorant.org
2634whois.rfc-ignorant.org (union of all results)
2407whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2385urired.spameatingmonkey.net
2005hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1648postmaster.rfc-ignorant.org
1135l1.apews.org
972hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
757bogusmx.rfc-ignorant.org
755dbl.spamhaus.org
719multi.surbl.org
631multi.uribl.com (union of all results)
624multi.uribl.com (result 127.0.0.2 = spam resource)
509hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
304dsn.rfc-ignorant.org
227whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
169hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
27rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
27rhsbl.sorbs.net (union of all results)
24dob.sibl.support-intelligence.net
22hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
19fresh.spameatingmonkey.net
19hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
13ex.dnsbl.org
13rhsbl.ahbl.org
7multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
2bl.deadbeef.com
1hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
1hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 24 June 2010.