Blacklists Compared

21 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
183391(total number of IP addresses tested, including 165 at SDSC)
180521(union of most IP zones)
169036zen.spamhaus.org (union of all results)
160140b.barracudacentral.org
156807cbl.abuseat.org
156802zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
151827l2.apews.org
136572hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
132889dnsbl-1.uceprotect.net
118684psbl.surriel.com
118492dnsbl-2.uceprotect.net
115155dnsbl-3.uceprotect.net
110630ubl.unsubscore.com
103784bl.spameatingmonkey.net
98704zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
96807bl.mailspike.net (union of all results)
93103dnsbl.sorbs.net (union of all results)
83878bl.tiopan.com
83862hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
69837spam.dnsbl.sorbs.net
62800dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
56640bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
55522blackholes.five-ten-sg.com (union of all results)
46162blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
45982bl.score.senderscore.com
43371dnsbl.sorbs.net (result 127.0.0.10 = dialup)
41934bl.spamcop.net
41023db.wpbl.info
36933bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
34186zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
23946ix.dnsbl.manitu.net
22664no-more-funn.moensted.dk (union of all results)
20946mail-abuse.blacklist.jippg.org
20208dnsbl.inps.de
20076bl.mailspike.net (result 127.0.0.11 = very bad reputation)
18700bl.mailspike.net (result 127.0.0.12 = bad reputation)
16978no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
12345hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
8048blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
7159dnsbl.ahbl.org (union of all results)
6135dnsbl.ahbl.org (result 127.0.0.4 = spam source)
5819ips.backscatterer.org
5337no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5317dnsbl.sorbs.net (result 127.0.0.6 = spam source)
5058korea.services.net
4593bl.spamcannibal.org
4202wl.mailspike.net (union of all results) (not a blacklist!)
4178list.dnswl.org (not a blacklist!)
3760hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
3711spamsources.fabel.dk
2083tr.countries.nerd.dk
1869hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1717dnsbl.njabl.org (union of all results)
1618wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
1489dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1419wl.mailspike.net (result 127.0.0.19 = very good reputation) (not a blacklist!)
1284blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
979dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
967l2.bbfh.ext.sorbs.net
849hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
814wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
575l1.bbfh.ext.sorbs.net
543accredit.habeas.com (not a blacklist!)
436query.bondedsender.org (not a blacklist!)
435aspews.ext.sorbs.net
351wl.mailspike.net (result 127.0.0.20 = excellent reputation) (not a blacklist!)
302zen.spamhaus.org (union of SBL and SBLCSS results)
291zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
265no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
166tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
166tor.dnsbl.sectoor.de (union of all results)
145dnsbl.njabl.org (result 127.0.0.2 = open relay)
143iadb2.isipp.com (not a blacklist!)
137no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
113iadb.isipp.com (not a blacklist!)
109hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
83dnsbl.njabl.org (result 127.0.0.4 = spam source)
68no-more-funn.moensted.dk (result 127.0.0.9 = misc)
49bl.deadbeef.com
45dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
31spamguard.leadmon.net (union of all results)
28spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
27blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
15dnsbl-0.uceprotect.net
12zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
11zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
5hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
4multi.uribl.com (result 127.0.0.2 = spam resource)
4multi.surbl.org
4multi.uribl.com (union of all results)
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
3spamguard.leadmon.net (result 127.0.0.8 = open proxy)
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
183391(total number of IP addresses whose names were tested, including 165 at SDSC)
113251hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
102623hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
88230(union of most domain zones)
76570l1.apews.org
71820abuse.rfc-ignorant.org
32158whois.rfc-ignorant.org (union of all results)
23221whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
11831hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
8937whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3967hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
3528hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
551hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
445dbl.spamhaus.org
434urired.spameatingmonkey.net
328hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
321hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
130hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
78rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
78rhsbl.sorbs.net (union of all results)
67postmaster.rfc-ignorant.org
57rhsbl.ahbl.org
40fresh.spameatingmonkey.net
37dsn.rfc-ignorant.org (zone not intended for this use)
37dob.sibl.support-intelligence.net
35bogusmx.rfc-ignorant.org
24multi.uribl.com (result 127.0.0.2 = spam resource)
24multi.surbl.org
24multi.uribl.com (union of all results)
11hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
1bl.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
48632(total number of domains tested, including 142 at SDSC)
45212hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
10410(union of most domain zones)
6072hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
3888whois.rfc-ignorant.org (union of all results)
3625whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2818hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2729abuse.rfc-ignorant.org
2607hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1800urired.spameatingmonkey.net
1661postmaster.rfc-ignorant.org
1514hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1314dbl.spamhaus.org
1077l1.apews.org
1042multi.surbl.org
1040hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
645multi.uribl.com (union of all results)
638multi.uribl.com (result 127.0.0.2 = spam resource)
615bogusmx.rfc-ignorant.org
530hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
313dsn.rfc-ignorant.org
263whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
23hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
22rhsbl.ahbl.org
20hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
16rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
16fresh.spameatingmonkey.net
16rhsbl.sorbs.net (union of all results)
14dob.sibl.support-intelligence.net
12ex.dnsbl.org
10hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
7multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
1hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)
1bl.deadbeef.com
This document was last updated by Jeff Makey <jeff@sdsc.edu> on 26 August 2010.