Blacklists Compared

8 May 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
213204(total number of IP addresses tested, including 178 at SDSC)
209492(union of most IP zones)
196871b.barracudacentral.org
196799zen.spamhaus.org (union of all results)
182875l2.apews.org
160804cbl.abuseat.org
160800zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
154326bl.mailspike.net (union of all results)
144661psbl.surriel.com
144412dnsbl-2.uceprotect.net
141295hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
140298dnsbl-1.uceprotect.net
136961dnsbl-3.uceprotect.net
128946dnsbl.sorbs.net (union of all results)
119432zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
111396bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
104463ubl.unsubscore.com
101839bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
94026bl.spameatingmonkey.net
92133hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
88596dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
56217spam.dnsbl.sorbs.net
55318dnsbl.sorbs.net (result 127.0.0.10 = dialup)
55308blackholes.five-ten-sg.com (union of all results)
51090bl.tiopan.com
49471blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
45507bl.spamcop.net
40241db.wpbl.info
38870bl.score.senderscore.com
38640zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
29932no-more-funn.moensted.dk (union of all results)
27152ix.dnsbl.manitu.net
22462no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
18978bl.mailspike.net (result 127.0.0.12 = bad reputation)
18590mail-abuse.blacklist.jippg.org
13555dnsbl.inps.de
10828bl.mailspike.net (result 127.0.0.11 = very bad reputation)
10506hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
6970dnsbl.sorbs.net (result 127.0.0.6 = spam source)
6840no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
6519korea.services.net
6391bl.spamcannibal.org
5117dnsbl.ahbl.org (union of all results)
4684spamsources.fabel.dk
4507blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4426list.dnswl.org (not a blacklist!)
4022ips.backscatterer.org
3874dnsbl.ahbl.org (result 127.0.0.4 = spam source)
3024hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2732wl.mailspike.net (union of all results) (not a blacklist!)
2334tr.countries.nerd.dk
2163dnsbl.njabl.org (union of all results)
2086hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1911dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1388hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1302blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1243dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1219wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
822wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
689wl.mailspike.net (result 127.0.0.19 = very good reputation) (not a blacklist!)
535accredit.habeas.com (not a blacklist!)
452query.bondedsender.org (not a blacklist!)
452zen.spamhaus.org (union of SBL and SBLCSS results)
433zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
432aspews.ext.sorbs.net
365no-more-funn.moensted.dk (result 127.0.0.9 = misc)
331no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
180dnsbl.njabl.org (result 127.0.0.2 = open relay)
140tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
140tor.dnsbl.sectoor.de (union of all results)
119iadb2.isipp.com (not a blacklist!)
93no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
89iadb.isipp.com (not a blacklist!)
80hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
72dnsbl.njabl.org (result 127.0.0.4 = spam source)
48bl.deadbeef.com
27blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
22dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
20dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
19zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
15spamguard.leadmon.net (union of all results)
12dnsbl-0.uceprotect.net
12multi.surbl.org
9multi.uribl.com (result 127.0.0.2 = spam resource)
9hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
9multi.uribl.com (union of all results)
8zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
6spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
5spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
4spamguard.leadmon.net (result 127.0.0.8 = open proxy)
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2wl.mailspike.net (result 127.0.0.20 = excellent reputation) (not a blacklist!)
2blackholes.brainerd.net
2l2.bbfh.ext.sorbs.net
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)

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
213204(total number of IP addresses whose names were tested, including 178 at SDSC)
139135hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
128635hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
120274(union of most domain zones)
102796l1.apews.org
95395abuse.rfc-ignorant.org
42439whois.rfc-ignorant.org (union of all results)
40883dynamic.rhs.mailpolice.com
30252whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
13884hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
12187whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
6098webmail.rhs.mailpolice.com
3273hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2281hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
915adv.rhs.mailpolice.com
437hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
350hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
347urired.spameatingmonkey.net
203dbl.spamhaus.org
137hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
68hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
63bulk.rhs.mailpolice.com
53postmaster.rfc-ignorant.org
46rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
46rhsbl.sorbs.net (union of all results)
39dsn.rfc-ignorant.org (zone not intended for this use)
35rhsbl.ahbl.org
30fresh.spameatingmonkey.net
30bogusmx.rfc-ignorant.org
27dob.sibl.support-intelligence.net
25multi.surbl.org
22multi.uribl.com (result 127.0.0.2 = spam resource)
22multi.uribl.com (union of all results)
15porn.rhs.mailpolice.com
3bl.deadbeef.com
1hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)

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
65477(total number of domains tested, including 159 at SDSC)
63478hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
10768(union of most domain zones)
6471hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
3291whois.rfc-ignorant.org (union of all results)
3060whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3002hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
2906urired.spameatingmonkey.net
2754abuse.rfc-ignorant.org
1971hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1654postmaster.rfc-ignorant.org
1178l1.apews.org
993bogusmx.rfc-ignorant.org
828hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
724dbl.spamhaus.org
671multi.surbl.org
658multi.uribl.com (union of all results)
649multi.uribl.com (result 127.0.0.2 = spam resource)
550webmail.rhs.mailpolice.com
415hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
314dsn.rfc-ignorant.org
274adv.rhs.mailpolice.com
231whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
152porn.rhs.mailpolice.com
49bulk.rhs.mailpolice.com
35rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
35rhsbl.sorbs.net (union of all results)
33hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
22hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
22hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
17rhsbl.ahbl.org
12ex.dnsbl.org
9multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
6dynamic.rhs.mailpolice.com
5hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
4fresh.spameatingmonkey.net
2bl.deadbeef.com
1fraud.rhs.mailpolice.com
1hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 14 May 2010.