Blacklists Compared

22 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
67608(total number of IP addresses tested, including 470 at SDSC)
61422(union of most IP zones)
46321zen.spamhaus.org (union of all results)
42376t1.dnsbl.net.au
38048cbl.abuseat.org
38008zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
36198b.barracudacentral.org
30410zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
26559dnsbl-1.uceprotect.net
24204dnsbl-3.uceprotect.net
21710ubl.unsubscore.com
21563dnsbl-2.uceprotect.net
21184hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
19295blackholes.five-ten-sg.com (union of all results)
18099no-more-funn.moensted.dk (union of all results)
17894dnsbl.sorbs.net (union of all results)
15704blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
15646psbl.surriel.com
13416dnsbl.sorbs.net (result 127.0.0.10 = dialup)
9764no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
7636no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
7062countries.blackholes.us (result 127.1.5.6 = China)
6647bl.spamcop.net
6045spam.dnsbl.sorbs.net
5827zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
4701ips.backscatterer.org
4468list.dnswl.org (not a blacklist!)
4427bl.spamcannibal.org
4380ix.dnsbl.manitu.net
4365dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
4066db.wpbl.info
2922hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2770countries.blackholes.us (result 127.6.4.3 = Russia)
2652countries.blackholes.us (result 127.0.7.6 = Brazil)
2599spamsources.fabel.dk
2541dnsbl.inps.de
2363blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2315tr.countries.nerd.dk
2223korea.services.net
2213hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1763countries.blackholes.us (result 127.4.1.0 = Korea)
1621countries.blackholes.us (result 127.7.9.2 = Turkey)
1402dnsbl.njabl.org (union of all results)
1182blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1142rmst.dnsbl.net.au
1035dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1012aspews.ext.sorbs.net
748countries.blackholes.us (result 127.3.9.2 = Japan)
727countries.blackholes.us (result 127.7.6.4 = Thailand)
605countries.blackholes.us (result 127.0.3.2 = Argentina)
476mail-abuse.blacklist.jippg.org
471countries.blackholes.us (result 127.1.5.8 = Taiwan)
410no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
331zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
315query.bondedsender.org (not a blacklist!)
309dnsbl.njabl.org (result 127.0.0.4 = spam source)
232countries.blackholes.us (result 127.4.8.4 = Mexico)
232hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
221countries.blackholes.us (result 127.3.4.4 = Hong Kong)
198accredit.habeas.com (not a blacklist!)
180no-more-funn.moensted.dk (result 127.0.0.9 = misc)
175iadb2.isipp.com (not a blacklist!)
147zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
134no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
130tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
130tor.dnsbl.sectoor.de (union of all results)
127iadb.isipp.com (not a blacklist!)
116countries.blackholes.us (result 127.7.0.2 = Singapore)
107work.drbl.croco.net
95countries.blackholes.us (result 127.4.5.8 = Malaysia)
90dnsbl.sorbs.net (result 127.0.0.6 = spam source)
58dnsbl.njabl.org (result 127.0.0.2 = open relay)
52l2.bbfh.ext.sorbs.net
51bl.deadbeef.com
37probes.dnsbl.net.au
32dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
28multi.surbl.org
26dnsbl.ahbl.org (union of all results)
25blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
24dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
24dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
22l2.apews.org
21blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
12dnsbl-0.uceprotect.net
8countries.blackholes.us (result 127.5.6.6 = Nigeria)
5dnsbl.sorbs.net (result 127.0.0.5 = open relay)
4dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
4spamguard.leadmon.net (union of all results)
3spam.wytnij.to
3blackholes.brainerd.net
2multi.uribl.com (result 127.0.0.2 = spam resource)
2rdts.dnsbl.net.au
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
2dnsbl.ahbl.org (result 127.0.0.4 = spam source)
2multi.uribl.com (union of all results)
1ricn.dnsbl.net.au
1spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)
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
67608(total number of IP addresses whose names were tested, including 470 at SDSC)
29277(union of all domain zones)
21288abuse.rfc-ignorant.org
15365rddn.dnsbl.net.au
12670whois.rfc-ignorant.org (union of all results)
10480dynamic.rhs.mailpolice.com
8014whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
5482l1.apews.org
4657whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1921webmail.rhs.mailpolice.com
755adv.rhs.mailpolice.com
121bl.deadbeef.com
115multi.uribl.com (result 127.0.0.2 = spam resource)
115multi.surbl.org
115multi.uribl.com (union of all results)
76postmaster.rfc-ignorant.org
65bogusmx.rfc-ignorant.org
60dsn.rfc-ignorant.org (zone not intended for this use)
41bulk.rhs.mailpolice.com
23rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
23rhsbl.sorbs.net (union of all results)
13porn.rhs.mailpolice.com
5dob.sibl.support-intelligence.net
1rhsbl.ahbl.org


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

HitsDNS Zone
40604(total number of domains tested, including 430 at SDSC)
9921(union of all domain zones)
3925whois.rfc-ignorant.org (union of all results)
3518whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2247abuse.rfc-ignorant.org
1744bogusmx.rfc-ignorant.org
1290postmaster.rfc-ignorant.org
1042multi.surbl.org
964multi.uribl.com (union of all results)
929multi.uribl.com (result 127.0.0.2 = spam resource)
677webmail.rhs.mailpolice.com
461dsn.rfc-ignorant.org
407whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
285adv.rhs.mailpolice.com
151porn.rhs.mailpolice.com
87bulk.rhs.mailpolice.com
31multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
28rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
28rhsbl.sorbs.net (union of all results)
20rddn.dnsbl.net.au (zone not intended for this use)
12dob.sibl.support-intelligence.net
11ex.dnsbl.org
8dynamic.rhs.mailpolice.com
8l1.apews.org
4multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
3fraud.rhs.mailpolice.com
3bl.deadbeef.com
1rhsbl.ahbl.org


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 28 November 2008.