Blacklists Compared

15 November 2008

[ 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 (127.0.0.1 result), 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
106684(total number of IP addresses tested, including 478 at SDSC)
101262(union of most IP zones)
83908zen.spamhaus.org (union of all results)
69478t1.dnsbl.net.au
66028b.barracudacentral.org
52777zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
49736cbl.abuseat.org
49615zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
42533dnsbl-3.uceprotect.net
39929dnsbl.sorbs.net (union of all results)
38700dnsbl-2.uceprotect.net
33600dnsbl.sorbs.net (result 127.0.0.10 = dialup)
33118dnsbl-1.uceprotect.net
32325no-more-funn.moensted.dk (union of all results)
31799psbl.surriel.com
28053blackholes.five-ten-sg.com (union of all results)
27965hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
25334ubl.unsubscore.com
24254blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
22883no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
16168zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
9215spam.dnsbl.sorbs.net
8482db.wpbl.info
8330no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
8149bl.spamcop.net
7052countries.blackholes.us (result 127.1.5.6 = China)
6241dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
6056bl.spamcannibal.org
5892dnsbl.inps.de
5628ix.dnsbl.manitu.net
5035countries.blackholes.us (result 127.6.4.3 = Russia)
4128tr.countries.nerd.dk
4057countries.blackholes.us (result 127.0.7.6 = Brazil)
3999list.dnswl.org (not a blacklist!)
3105spamsources.fabel.dk
2983korea.services.net
2882countries.blackholes.us (result 127.7.9.2 = Turkey)
2795hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2679blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2621ips.backscatterer.org
2397countries.blackholes.us (result 127.4.1.0 = Korea)
2337hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1889dnsbl.njabl.org (union of all results)
1826rmst.dnsbl.net.au
1422dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1196countries.blackholes.us (result 127.7.6.4 = Thailand)
1140countries.blackholes.us (result 127.0.3.2 = Argentina)
1096blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
951aspews.ext.sorbs.net
857mail-abuse.blacklist.jippg.org
585countries.blackholes.us (result 127.1.5.8 = Taiwan)
559countries.blackholes.us (result 127.3.9.2 = Japan)
531no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
499no-more-funn.moensted.dk (result 127.0.0.9 = misc)
416dnsbl.njabl.org (result 127.0.0.4 = spam source)
362countries.blackholes.us (result 127.4.8.4 = Mexico)
326zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
294query.bondedsender.org (not a blacklist!)
200hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
191accredit.habeas.com (not a blacklist!)
190countries.blackholes.us (result 127.3.4.4 = Hong Kong)
180zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
169countries.blackholes.us (result 127.7.0.2 = Singapore)
161iadb2.isipp.com (not a blacklist!)
123no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
120countries.blackholes.us (result 127.4.5.8 = Malaysia)
120work.drbl.croco.net
117iadb.isipp.com (not a blacklist!)
78dnsbl.sorbs.net (result 127.0.0.6 = spam source)
76tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
76probes.dnsbl.net.au
76tor.dnsbl.sectoor.de (union of all results)
62bl.deadbeef.com
52l2.bbfh.ext.sorbs.net
51dnsbl.njabl.org (result 127.0.0.2 = open relay)
33dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
32multi.surbl.org
25sbl.csma.biz
24bl.csma.biz
22dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
21dnsbl-0.uceprotect.net
20l2.apews.org
15exemptions.ahbl.org (not a blacklist!)
13blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
11blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
7countries.blackholes.us (result 127.5.6.6 = Nigeria)
6dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
6multi.uribl.com (union of all results)
6spamguard.leadmon.net (union of all results)
5multi.uribl.com (result 127.0.0.2 = spam resource)
5rdts.dnsbl.net.au
4dnsbl.sorbs.net (result 127.0.0.5 = open relay)
3spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
2spam.wytnij.to
2spamguard.leadmon.net (result 127.0.0.8 = open proxy)
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1dob.sibl.support-intelligence.net


Survey results for all known public domain-name-based DNS blacklists. Lookups were done on the domain names of connecting IP addresses.

HitsDNS Zone
106684(total number of IP addresses whose names were tested, including 478 at SDSC)
58792(union of all domain zones)
40335abuse.rfc-ignorant.org
37746rddn.dnsbl.net.au
24379dynamic.rhs.mailpolice.com
21890whois.rfc-ignorant.org (union of all results)
16759l1.apews.org
12588whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
9302whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3752webmail.rhs.mailpolice.com
743adv.rhs.mailpolice.com
186bl.deadbeef.com
124multi.surbl.org
116multi.uribl.com (union of all results)
115multi.uribl.com (result 127.0.0.2 = spam resource)
61postmaster.rfc-ignorant.org
53bogusmx.rfc-ignorant.org
46dsn.rfc-ignorant.org (zone not intended for this use)
41bulk.rhs.mailpolice.com
22rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
22rhsbl.sorbs.net (union of all results)
8dob.sibl.support-intelligence.net
6porn.rhs.mailpolice.com
1multi.uribl.com (result 127.0.0.4 = opt-out spam resource)


Survey results for all known public domain-name-based DNS blacklists. Lookups were done on SMTP sender domains.

HitsDNS Zone
60387(total number of domains tested, including 438 at SDSC)
14028(union of all domain zones)
6329whois.rfc-ignorant.org (union of all results)
5850whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2918abuse.rfc-ignorant.org
2528bogusmx.rfc-ignorant.org
1649postmaster.rfc-ignorant.org
1231multi.surbl.org
999multi.uribl.com (union of all results)
953multi.uribl.com (result 127.0.0.2 = spam resource)
874webmail.rhs.mailpolice.com
594dsn.rfc-ignorant.org
479whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
305adv.rhs.mailpolice.com
239porn.rhs.mailpolice.com
107bulk.rhs.mailpolice.com
44multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
35rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
35rhsbl.sorbs.net (union of all results)
21dob.sibl.support-intelligence.net
17rddn.dnsbl.net.au (zone not intended for this use)
16ex.dnsbl.org
11dynamic.rhs.mailpolice.com
9l1.apews.org
3fraud.rhs.mailpolice.com
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2bl.deadbeef.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 21 November 2008.