Blacklists Compared

23 October 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, swl.spamhaus.org, and wl.mailspike.net zones because they are not blacklists. Because they are too aggressive to be widely useful the spam.dnsbl.sorbs.net and l2.apews.org zones are also excluded from the union.

HitsDNS Zone
135248(total number of IP addresses tested, including 159 at SDSC)
131665(union of most IP zones)
122979b.barracudacentral.org
120589zen.spamhaus.org (union of all results)
107226zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
107189cbl.abuseat.org
93312hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
88458dnsbl-1.uceprotect.net
84917bl.tiopan.com
82661bl.mailspike.net (union of all results)
80331dnsbl-2.uceprotect.net
79167psbl.surriel.com
79037dnsbl-3.uceprotect.net
74860zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
73167bl.spameatingmonkey.net
68570l2.apews.org
57932hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
46595spam.dnsbl.sorbs.net
46393bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
43187bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
40371blackholes.five-ten-sg.com (union of all results)
38063bl.score.senderscore.com
35130dnsbl.sorbs.net (union of all results)
33388ubl.unsubscore.com
30083db.wpbl.info
29205bl.spamcop.net
28370blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
26410dnsbl.sorbs.net (result 127.0.0.10 = dialup)
20949zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
19184ix.dnsbl.manitu.net
18301bl.mailspike.net (result 127.0.0.11 = very bad reputation)
16085mail-abuse.blacklist.jippg.org
15990dnsbl.inps.de
15100no-more-funn.moensted.dk (union of all results)
11023no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
10598blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
10036bl.mailspike.net (result 127.0.0.12 = bad reputation)
6983hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
6346dnsbl.sorbs.net (result 127.0.0.6 = spam source)
4789wl.mailspike.net (union of all results) (not a blacklist!)
4395list.dnswl.org (not a blacklist!)
4036dnsbl.ahbl.org (union of all results)
3696wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
3653ips.backscatterer.org
3579no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
3519dnsbl.ahbl.org (result 127.0.0.4 = spam source)
3389hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
3304bl.spamcannibal.org
2826dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
2767korea.services.net
2615spamsources.fabel.dk
2234hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1379blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1180dnsbl.njabl.org (union of all results)
1110tr.countries.nerd.dk
1030wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
1008hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
968dnsbl.njabl.org (result 127.0.0.9 = open proxy)
708l2.bbfh.ext.sorbs.net
579accredit.habeas.com (not a blacklist!)
513query.bondedsender.org (not a blacklist!)
499aspews.ext.sorbs.net
435dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
338l1.bbfh.ext.sorbs.net
337zen.spamhaus.org (union of SBL and SBLCSS results)
336zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
319no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
166dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
166dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
166dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
152iadb2.isipp.com (not a blacklist!)
150no-more-funn.moensted.dk (result 127.0.0.9 = misc)
126dnsbl.njabl.org (result 127.0.0.2 = open relay)
122iadb.isipp.com (not a blacklist!)
114tor.dnsbl.sectoor.de (union of all results)
113tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
86dnsbl.njabl.org (result 127.0.0.4 = spam source)
86no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
82dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
62wl.mailspike.net (result 127.0.0.19 = very good reputation) (not a blacklist!)
58hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
32bl.deadbeef.com
23blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
13zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
13swl.spamhaus.org (union of all results) (not a blacklist!)
11multi.surbl.org
8swl.spamhaus.org (result 127.0.2.103 = sends transactions - temporary listing) (not a blacklist!)
5dnsbl-0.uceprotect.net
5swl.spamhaus.org (result 127.0.2.2 = sends individual mail) (not a blacklist!)
5spamguard.leadmon.net (union of all results)
4hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
3spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
1zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
1multi.uribl.com (result 127.0.0.2 = spam resource)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1wl.mailspike.net (result 127.0.0.20 = excellent reputation) (not a blacklist!)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1multi.uribl.com (union of all results)
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
135248(total number of IP addresses whose names were tested, including 159 at SDSC)
83290hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
73004hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
63304(union of most domain zones)
55948abuse.rfc-ignorant.org
29506l1.apews.org
21406whois.rfc-ignorant.org (union of all results)
15583whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
7865hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
5824whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
4671hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2769hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
537hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
497dbl.spamhaus.org
448urired.spameatingmonkey.net
290hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
222hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
77postmaster.rfc-ignorant.org
54hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
49fresh.spameatingmonkey.net
49dob.sibl.support-intelligence.net
47dsn.rfc-ignorant.org (zone not intended for this use)
45bogusmx.rfc-ignorant.org
45rhsbl.ahbl.org
34multi.surbl.org
33multi.uribl.com (union of all results)
32multi.uribl.com (result 127.0.0.2 = spam resource)
27hostkarma.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
63277(total number of domains tested, including 125 at SDSC)
57339hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
12612(union of most domain zones)
7099hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
4001abuse.rfc-ignorant.org
3201urired.spameatingmonkey.net
3112whois.rfc-ignorant.org (union of all results)
3050hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2907hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
2808whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2116dbl.spamhaus.org
1969l1.apews.org
1802hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1619postmaster.rfc-ignorant.org
1238hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
1150multi.surbl.org
599bogusmx.rfc-ignorant.org
588multi.uribl.com (union of all results)
576multi.uribl.com (result 127.0.0.2 = spam resource)
450hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
304whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
303dsn.rfc-ignorant.org
54fresh.spameatingmonkey.net
46dob.sibl.support-intelligence.net
21rhsbl.ahbl.org
19hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
16hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
11hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
10ex.dnsbl.org
9multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
3multi.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 29 October 2010.