Blacklists Compared

16 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
119098(total number of IP addresses tested, including 159 at SDSC)
115701(union of most IP zones)
107469b.barracudacentral.org
105127zen.spamhaus.org (union of all results)
97229cbl.abuseat.org
97204zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
87359hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
81433dnsbl-1.uceprotect.net
73627bl.tiopan.com
70380bl.mailspike.net (union of all results)
69512dnsbl-2.uceprotect.net
68106dnsbl-3.uceprotect.net
66180zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
65686psbl.surriel.com
62635bl.spameatingmonkey.net
59602hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
43844bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
36182blackholes.five-ten-sg.com (union of all results)
34010bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
33474bl.score.senderscore.com
31249spam.dnsbl.sorbs.net
27617dnsbl.sorbs.net (union of all results)
27468db.wpbl.info
27225bl.spamcop.net
25167blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
22408dnsbl.sorbs.net (result 127.0.0.10 = dialup)
17414ubl.unsubscore.com
17232zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
16909ix.dnsbl.manitu.net
15777bl.mailspike.net (result 127.0.0.11 = very bad reputation)
14758mail-abuse.blacklist.jippg.org
13674dnsbl.inps.de
13417no-more-funn.moensted.dk (union of all results)
9635blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
9526no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
9523bl.mailspike.net (result 127.0.0.12 = bad reputation)
4609wl.mailspike.net (union of all results) (not a blacklist!)
4312hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
4139list.dnswl.org (not a blacklist!)
3729ips.backscatterer.org
3501dnsbl.ahbl.org (union of all results)
3433dnsbl.sorbs.net (result 127.0.0.6 = spam source)
3418no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
3361hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
3099wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
3023bl.spamcannibal.org
2999dnsbl.ahbl.org (result 127.0.0.4 = spam source)
2596korea.services.net
2330hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
2197spamsources.fabel.dk
1928dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
1429wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
1350blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1128dnsbl.njabl.org (union of all results)
1069hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1013tr.countries.nerd.dk
923dnsbl.njabl.org (result 127.0.0.9 = open proxy)
774l2.bbfh.ext.sorbs.net
639aspews.ext.sorbs.net
605accredit.habeas.com (not a blacklist!)
532query.bondedsender.org (not a blacklist!)
415dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
346l1.bbfh.ext.sorbs.net
309no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
278zen.spamhaus.org (union of SBL and SBLCSS results)
277zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
198dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
198dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
198dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
151no-more-funn.moensted.dk (result 127.0.0.9 = misc)
118iadb2.isipp.com (not a blacklist!)
104dnsbl.njabl.org (result 127.0.0.2 = open relay)
103tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
103tor.dnsbl.sectoor.de (union of all results)
101dnsbl.njabl.org (result 127.0.0.4 = spam source)
92iadb.isipp.com (not a blacklist!)
87dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
81no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
80wl.mailspike.net (result 127.0.0.19 = very good reputation) (not a blacklist!)
61hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
32bl.deadbeef.com
29blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
16multi.surbl.org
15zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
15swl.spamhaus.org (union of all results) (not a blacklist!)
10dnsbl-0.uceprotect.net
10swl.spamhaus.org (result 127.0.2.103 = sends transactions - temporary listing) (not a blacklist!)
6spamguard.leadmon.net (union of all results)
5swl.spamhaus.org (result 127.0.2.2 = sends individual mail) (not a blacklist!)
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
3spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
2multi.uribl.com (result 127.0.0.2 = spam resource)
2spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
2multi.uribl.com (union of all results)
1zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
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 127.0.0.8 = open proxy)
1hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
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
119098(total number of IP addresses whose names were tested, including 159 at SDSC)
73357hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
64699hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
55468(union of most domain zones)
49062abuse.rfc-ignorant.org
19204whois.rfc-ignorant.org (union of all results)
14289whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
6766hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
4916whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3901hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2266hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
564hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
514urired.spameatingmonkey.net
465dbl.spamhaus.org
320hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
213hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
63postmaster.rfc-ignorant.org
61hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
45multi.uribl.com (result 127.0.0.2 = spam resource)
45multi.uribl.com (union of all results)
44rhsbl.ahbl.org
40bogusmx.rfc-ignorant.org
37fresh.spameatingmonkey.net
36dsn.rfc-ignorant.org (zone not intended for this use)
36dob.sibl.support-intelligence.net
33hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
17multi.surbl.org
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
64487(total number of domains tested, including 122 at SDSC)
60625hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
10995(union of most domain zones)
6308hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
3841urired.spameatingmonkey.net
3241abuse.rfc-ignorant.org
2774hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2733whois.rfc-ignorant.org (union of all results)
2568hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
2488whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1624hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
1504postmaster.rfc-ignorant.org
1326dbl.spamhaus.org
1312multi.surbl.org
1031hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
756multi.uribl.com (union of all results)
745multi.uribl.com (result 127.0.0.2 = spam resource)
504bogusmx.rfc-ignorant.org
420hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
289dsn.rfc-ignorant.org
245whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
50dob.sibl.support-intelligence.net
44fresh.spameatingmonkey.net
22hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
21rhsbl.ahbl.org
19hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
11multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
11hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
11ex.dnsbl.org
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 21 October 2010.