Blacklists Compared

18 September 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
149619(total number of IP addresses tested, including 180 at SDSC)
146434(union of most IP zones)
137323b.barracudacentral.org
134920zen.spamhaus.org (union of all results)
124148cbl.abuseat.org
124078zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
123438l2.apews.org
113119hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
110797dnsbl-1.uceprotect.net
96538bl.spameatingmonkey.net
96020psbl.surriel.com
94009dnsbl-2.uceprotect.net
93031dnsbl-3.uceprotect.net
83106zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
80640bl.mailspike.net (union of all results)
80496dnsbl.sorbs.net (union of all results)
78186bl.tiopan.com
69864hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
57320dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
56974spam.dnsbl.sorbs.net
47208bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
45799bl.score.senderscore.com
42378blackholes.five-ten-sg.com (union of all results)
33826db.wpbl.info
33501dnsbl.sorbs.net (result 127.0.0.10 = dialup)
33209bl.spamcop.net
32242blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
29272bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
24377zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
23219ubl.unsubscore.com
21608bl.mailspike.net (result 127.0.0.11 = very bad reputation)
18003ix.dnsbl.manitu.net
17799no-more-funn.moensted.dk (union of all results)
17002mail-abuse.blacklist.jippg.org
16390dnsbl.inps.de
15302bl.mailspike.net (result 127.0.0.12 = bad reputation)
13452no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
10440hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
8797blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
6088ips.backscatterer.org
4806wl.mailspike.net (union of all results) (not a blacklist!)
4441dnsbl.ahbl.org (union of all results)
4392list.dnswl.org (not a blacklist!)
4233dnsbl.sorbs.net (result 127.0.0.6 = spam source)
3706no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
3703dnsbl.ahbl.org (result 127.0.0.4 = spam source)
3611bl.spamcannibal.org
3410hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2948korea.services.net
2623spamsources.fabel.dk
2215hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1968wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
1871wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
1404dnsbl.njabl.org (union of all results)
1313blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1205tr.countries.nerd.dk
1191dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1020hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
967wl.mailspike.net (result 127.0.0.19 = very good reputation) (not a blacklist!)
948l2.bbfh.ext.sorbs.net
665dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
566accredit.habeas.com (not a blacklist!)
487aspews.ext.sorbs.net
478query.bondedsender.org (not a blacklist!)
452l1.bbfh.ext.sorbs.net
357no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
298no-more-funn.moensted.dk (result 127.0.0.9 = misc)
283zen.spamhaus.org (union of SBL and SBLCSS results)
278zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
149iadb2.isipp.com (not a blacklist!)
128iadb.isipp.com (not a blacklist!)
127dnsbl.njabl.org (result 127.0.0.2 = open relay)
120tor.dnsbl.sectoor.de (union of all results)
119tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
98no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
86dnsbl.njabl.org (result 127.0.0.4 = spam source)
83hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
73dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
48bl.deadbeef.com
26blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
19spamguard.leadmon.net (union of all results)
14spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
12zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
12dnsbl-0.uceprotect.net
7multi.surbl.org
5zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
4multi.uribl.com (result 127.0.0.2 = spam resource)
4multi.uribl.com (union of all results)
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
3spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
3hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
2spamguard.leadmon.net (result 127.0.0.8 = open proxy)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
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
149619(total number of IP addresses whose names were tested, including 180 at SDSC)
94742hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
82838hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
72987(union of most domain zones)
62971l1.apews.org
59580abuse.rfc-ignorant.org
25811whois.rfc-ignorant.org (union of all results)
18536whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
9197hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
7275whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3974hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2750hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
650hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
549urired.spameatingmonkey.net
428dbl.spamhaus.org
304hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
237hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
98dob.sibl.support-intelligence.net
93hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
73rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
73rhsbl.sorbs.net (union of all results)
49postmaster.rfc-ignorant.org
43rhsbl.ahbl.org
41fresh.spameatingmonkey.net
40multi.surbl.org
37dsn.rfc-ignorant.org (zone not intended for this use)
32bogusmx.rfc-ignorant.org
28multi.uribl.com (result 127.0.0.2 = spam resource)
28multi.uribl.com (union of all results)
17hostkarma.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
47641(total number of domains tested, including 167 at SDSC)
35105hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
16095(union of most domain zones)
11745hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
8466abuse.rfc-ignorant.org
6102l1.apews.org
5983whois.rfc-ignorant.org (union of all results)
5217whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3412hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
3361hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
2779hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1614urired.spameatingmonkey.net
1610hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1517postmaster.rfc-ignorant.org
1504dbl.spamhaus.org
1010multi.surbl.org
766whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
574multi.uribl.com (union of all results)
565multi.uribl.com (result 127.0.0.2 = spam resource)
535bogusmx.rfc-ignorant.org
377hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
290dsn.rfc-ignorant.org
138fresh.spameatingmonkey.net
77hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
42dob.sibl.support-intelligence.net
33hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
27rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
27rhsbl.sorbs.net (union of all results)
23rhsbl.ahbl.org
19hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
11ex.dnsbl.org
7multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
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 22 September 2010.