Blacklists Compared

22 May 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
193586(total number of IP addresses tested, including 196 at SDSC)
190259(union of most IP zones)
179132b.barracudacentral.org
178257zen.spamhaus.org (union of all results)
166242l2.apews.org
150967zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
150926cbl.abuseat.org
138435hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
138006bl.mailspike.net (union of all results)
133872dnsbl-1.uceprotect.net
130901dnsbl-2.uceprotect.net
123752dnsbl-3.uceprotect.net
116800bl.spameatingmonkey.net
110221psbl.surriel.com
109782bl.mailspike.net (result 127.0.0.10 = worst possible reputation)
105203zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
97572dnsbl.sorbs.net (union of all results)
91060hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
64749spam.dnsbl.sorbs.net
57575dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
56577bl.mailspike.net (result 127.0.0.2 = distributed spam wave participant)
50578dnsbl.sorbs.net (result 127.0.0.10 = dialup)
50146bl.tiopan.com
49079blackholes.five-ten-sg.com (union of all results)
43837bl.spamcop.net
43796blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
40860bl.score.senderscore.com
36243zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
34871db.wpbl.info
26656ix.dnsbl.manitu.net
26197no-more-funn.moensted.dk (union of all results)
23444ubl.unsubscore.com
19918no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
16686bl.mailspike.net (result 127.0.0.12 = bad reputation)
16453mail-abuse.blacklist.jippg.org
13525dnsbl.inps.de
8483hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
8244bl.mailspike.net (result 127.0.0.11 = very bad reputation)
6908dnsbl.sorbs.net (result 127.0.0.6 = spam source)
5870no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5682bl.spamcannibal.org
5232korea.services.net
5032dnsbl.ahbl.org (union of all results)
4204list.dnswl.org (not a blacklist!)
3962blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
3940spamsources.fabel.dk
3507ips.backscatterer.org
3086dnsbl.ahbl.org (result 127.0.0.4 = spam source)
2919hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2265tr.countries.nerd.dk
2122hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
2000dnsbl.njabl.org (union of all results)
1944dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1681dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1635wl.mailspike.net (union of all results) (not a blacklist!)
1450wl.mailspike.net (result 127.0.0.17 = possible legitimate sender) (not a blacklist!)
1297hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
1294blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
491accredit.habeas.com (not a blacklist!)
431aspews.ext.sorbs.net
408query.bondedsender.org (not a blacklist!)
349zen.spamhaus.org (union of SBL and SBLCSS results)
325zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
246no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
228no-more-funn.moensted.dk (result 127.0.0.9 = misc)
194dnsbl.njabl.org (result 127.0.0.2 = open relay)
145wl.mailspike.net (result 127.0.0.18 = good reputation) (not a blacklist!)
144iadb2.isipp.com (not a blacklist!)
135tor.dnsbl.sectoor.de (union of all results)
134tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
125dnsbl.njabl.org (result 127.0.0.4 = spam source)
116iadb.isipp.com (not a blacklist!)
104hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
100no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
47bl.deadbeef.com
40wl.mailspike.net (result 127.0.0.19 = very good reputation) (not a blacklist!)
25blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
24zen.spamhaus.org (result 127.0.0.3 = Spamhaus SBLCSS)
17dnsbl-0.uceprotect.net
9spamguard.leadmon.net (union of all results)
7multi.surbl.org
6zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
6multi.uribl.com (result 127.0.0.2 = spam resource)
6multi.uribl.com (union of all results)
5hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
5l2.bbfh.ext.sorbs.net
4spamguard.leadmon.net (result 127.0.0.9 = abused DNS server)
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
3spamguard.leadmon.net (result 127.0.0.8 = open proxy)
2spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
2dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)

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
193586(total number of IP addresses whose names were tested, including 196 at SDSC)
128225hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
118351hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
110132(union of most domain zones)
94689l1.apews.org
85801abuse.rfc-ignorant.org
37784whois.rfc-ignorant.org (union of all results)
35822dynamic.rhs.mailpolice.com
27735whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
12538hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
10049whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
5662webmail.rhs.mailpolice.com
3304hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2346hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
899adv.rhs.mailpolice.com
471hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
334urired.spameatingmonkey.net
330hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
200dbl.spamhaus.org
100hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
62hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
58postmaster.rfc-ignorant.org
51rhsbl.ahbl.org
41rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
41rhsbl.sorbs.net (union of all results)
34dsn.rfc-ignorant.org (zone not intended for this use)
28bulk.rhs.mailpolice.com
26bogusmx.rfc-ignorant.org
25multi.uribl.com (result 127.0.0.2 = spam resource)
25multi.uribl.com (union of all results)
19porn.rhs.mailpolice.com
17multi.surbl.org
13fresh.spameatingmonkey.net
13dob.sibl.support-intelligence.net
4bl.deadbeef.com
2hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)

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
49017(total number of domains tested, including 170 at SDSC)
46687hostkarma.junkemailfilter.com (result 127.0.2.3 = domain first seen more than 7 days ago)
9996(union of most domain zones)
6289hostkarma.junkemailfilter.com (result 127.0.1.1 = MTA sends QUIT)
3184whois.rfc-ignorant.org (union of all results)
3016hostkarma.junkemailfilter.com (result 127.0.0.5 = do not blacklist)
2931whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2925abuse.rfc-ignorant.org
2153urired.spameatingmonkey.net
2010hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1780postmaster.rfc-ignorant.org
1182l1.apews.org
890hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
815bogusmx.rfc-ignorant.org
754dbl.spamhaus.org
737multi.surbl.org
656webmail.rhs.mailpolice.com
632multi.uribl.com (union of all results)
621multi.uribl.com (result 127.0.0.2 = spam resource)
475hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
343dsn.rfc-ignorant.org
278adv.rhs.mailpolice.com
253whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
135porn.rhs.mailpolice.com
56hostkarma.junkemailfilter.com (result 127.0.2.2 = domain first seen in last 7 days)
44bulk.rhs.mailpolice.com
34hostkarma.junkemailfilter.com (result 127.0.1.2 = MTA does not send QUIT)
26rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
26rhsbl.sorbs.net (union of all results)
23rhsbl.ahbl.org
22hostkarma.junkemailfilter.com (result 127.0.1.4 = no verify host)
10dynamic.rhs.mailpolice.com
10ex.dnsbl.org
9multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
5fresh.spameatingmonkey.net
5dob.sibl.support-intelligence.net
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2fraud.rhs.mailpolice.com
2hostkarma.junkemailfilter.com (result 127.0.2.1 = domain first seen today)
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 27 May 2010.