Blacklists Compared

18 July 2009

[ 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, and iadb2.isipp.com 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
175803(total number of IP addresses tested, including 198 at SDSC)
171865(union of most IP zones)
158402zen.spamhaus.org (union of all results)
153308l2.apews.org
123510cbl.abuseat.org
123395zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
117516b.barracudacentral.org
116968hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
110144dnsbl-2.uceprotect.net
108449dnsbl-3.uceprotect.net
101871dnsbl-1.uceprotect.net
97686zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
65323ubl.unsubscore.com
60380psbl.surriel.com
53356hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
46118no-more-funn.moensted.dk (union of all results)
44500blackholes.five-ten-sg.com (union of all results)
40426blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
40062bl.spameatingmonkey.net
37331bl.spamcop.net
30244no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
29667zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
27275db.wpbl.info
20397ix.dnsbl.manitu.net
16226mail-abuse.blacklist.jippg.org
14001no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
12123korea.services.net
11093hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
10788dnsbl.inps.de
8546bl.spamcannibal.org
8291tr.countries.nerd.dk
5941ips.backscatterer.org
5767spamsources.fabel.dk
3621list.dnswl.org (not a blacklist!)
3134hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
3012blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2664dnsbl.njabl.org (union of all results)
2327dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1771hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1303hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
1258hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1089no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1047blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
730no-more-funn.moensted.dk (result 127.0.0.9 = misc)
386query.bondedsender.org (not a blacklist!)
307accredit.habeas.com (not a blacklist!)
218zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
206dnsbl.njabl.org (result 127.0.0.4 = spam source)
166iadb2.isipp.com (not a blacklist!)
156dnsbl.ahbl.org (union of all results)
131dnsbl.njabl.org (result 127.0.0.2 = open relay)
128dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
127iadb.isipp.com (not a blacklist!)
110no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
103tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
103tor.dnsbl.sectoor.de (union of all results)
71bl.deadbeef.com
28dnsbl.ahbl.org (result 127.0.0.4 = spam source)
24zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
17multi.uribl.com (union of all results)
15multi.uribl.com (result 127.0.0.2 = spam resource)
15blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
14spamguard.leadmon.net (union of all results)
12spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
8hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
6dnsbl-0.uceprotect.net
6multi.surbl.org
4blackholes.brainerd.net
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)

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
175803(total number of IP addresses whose names were tested, including 198 at SDSC)
100863hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
90944hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
83774(union of most domain zones)
74719l1.apews.org
66190abuse.rfc-ignorant.org
32116dynamic.rhs.mailpolice.com
29573whois.rfc-ignorant.org (union of all results)
17535whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
12038whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
9347hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
4277webmail.rhs.mailpolice.com
3485hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1766urired.spameatingmonkey.net
1023hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
829rhsbl.ahbl.org
766adv.rhs.mailpolice.com
305hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
282hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
235hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
70postmaster.rfc-ignorant.org
57multi.surbl.org
51multi.uribl.com (union of all results)
50multi.uribl.com (result 127.0.0.2 = spam resource)
47dsn.rfc-ignorant.org (zone not intended for this use)
45bogusmx.rfc-ignorant.org
38bulk.rhs.mailpolice.com
37dob.sibl.support-intelligence.net
36fresh.spameatingmonkey.net
17bl.deadbeef.com
12hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)

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
60377(total number of domains tested, including 187 at SDSC)
50239hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
16306(union of most domain zones)
8664hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
7025whois.rfc-ignorant.org (union of all results)
6216whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
5596hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
4902abuse.rfc-ignorant.org
3022l1.apews.org
2754hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2421hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
1951hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1803urired.spameatingmonkey.net
1529bogusmx.rfc-ignorant.org
1428postmaster.rfc-ignorant.org
1227multi.surbl.org
1171multi.uribl.com (union of all results)
1151multi.uribl.com (result 127.0.0.2 = spam resource)
1069webmail.rhs.mailpolice.com
809whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
733hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
454dsn.rfc-ignorant.org
384dynamic.rhs.mailpolice.com
321adv.rhs.mailpolice.com
177porn.rhs.mailpolice.com
130hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
116rhsbl.ahbl.org
95bulk.rhs.mailpolice.com
54hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
32dob.sibl.support-intelligence.net
14multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
13ex.dnsbl.org
6multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
6fresh.spameatingmonkey.net
3bl.deadbeef.com
2hostkarma.junkemailfilter.com (result 127.0.1.3 = MTA somtimes sends QUIT)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 23 July 2009.