Blacklists Compared

29 September 2007

[ 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
235606(total number of IP addresses tested, including 524 at SDSC)
222714(union of most IP zones)
200837l2.apews.org
180379zen.spamhaus.org (union of all results)
171262t1.dnsbl.net.au
137679pbl.spamhaus.org (union of all results)
131267dnsbl.sorbs.net (union of all results)
128983sbl-xbl.spamhaus.org (union of all results)
128590xbl.spamhaus.org (union of all results)
128474cbl.abuseat.org
128403zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
128401xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
128400sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
118688dnsbl.tqmcube.com (union of all results)
110496zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
110496pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
108001dnsbl-3.uceprotect.net
103133dnsbl-1.uceprotect.net
97666dnsbl.sorbs.net (result 127.0.0.10 = dialup)
97665no-more-funn.moensted.dk (union of all results)
88429blackholes.five-ten-sg.com (union of all results)
87654psbl.surriel.com
82931dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
82104blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
81344no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
78633dnsbl-2.uceprotect.net
56643ubl.unsubscore.com
54426bl.spamcop.net
46467hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
36798dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
35505dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
34545db.wpbl.info
33560zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
33560pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
28850ix.dnsbl.manitu.net
18859ips.backscatterer.org
15111unconfirmed.dsbl.org
14890list.dsbl.org
14888dsbl.dnsbl.net.au
14051mail-abuse.blacklist.jippg.org
13496no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
10116countries.blackholes.us (result 127.0.7.6 = Brazil)
9266countries.blackholes.us (result 127.6.4.3 = Russia)
9184tr.countries.nerd.dk
8997countries.blackholes.us (result 127.7.9.2 = Turkey)
8503dnsbl.tqmcube.com (result 127.0.0.5 = China)
8351countries.blackholes.us (result 127.1.5.6 = China)
6296korea.services.net
6144dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
6077bl.spamcannibal.org
5868countries.blackholes.us (result 127.4.1.0 = Korea)
5792countries.blackholes.us (result 127.4.8.4 = Mexico)
5476rmst.dnsbl.net.au
5088blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4676list.dnswl.org (not a blacklist!)
4383dnsbl.njabl.org (union of all results)
4180countries.blackholes.us (result 127.0.3.2 = Argentina)
4096dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3041spamsources.fabel.dk
2991dnsbl.ahbl.org (union of all results)
2866countries.blackholes.us (result 127.3.9.2 = Japan)
2855probes.dnsbl.net.au
2829dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2350countries.blackholes.us (result 127.7.6.4 = Thailand)
2072hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1973hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
1794no-more-funn.moensted.dk (result 127.0.0.9 = misc)
1508countries.blackholes.us (result 127.4.5.8 = Malaysia)
1473bl.csma.biz
1362countries.blackholes.us (result 127.1.5.8 = Taiwan)
1143blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
829zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
829xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
829sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
724countries.blackholes.us (result 127.3.4.4 = Hong Kong)
678zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
678sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
678sbl.spamhaus.org
662no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
477no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
447aspews.ext.sorbs.net
389countries.blackholes.us (result 127.7.0.2 = Singapore)
383work.drbl.croco.net
300dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
280dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
279blackholes.uceb.org (union of all results)
261multi.surbl.org
212blackholes.uceb.org (result 127.0.0.6 = spam haven)
177query.bondedsender.org (not a blacklist!)
175dnsbl.njabl.org (result 127.0.0.4 = spam source)
170multihop.dsbl.org
157iadb2.isipp.com (not a blacklist!)
157iadb.isipp.com (not a blacklist!)
155accredit.habeas.com (not a blacklist!)
149multi.uribl.com (result 127.0.0.2 = spam resource)
149multi.uribl.com (union of all results)
115blackholes.uceb.org (result 127.0.0.3 = spam source)
112relays.nether.net
112bl.deadbeef.com
111dnsbl.njabl.org (result 127.0.0.2 = open relay)
95dnsbl.ahbl.org (result 127.0.0.4 = spam source)
65spam.wytnij.to
63hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
45blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
45blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
41blackholes.uceb.org (result 127.0.0.2 = open relay)
39exemptions.ahbl.org (not a blacklist!)
32rdts.dnsbl.net.au
30spamguard.leadmon.net (union of all results)
29dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
28dnsbl.ahbl.org (result 127.0.0.15 = open relay)
25dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
24countries.blackholes.us (result 127.5.6.6 = Nigeria)
22dnsbl.sorbs.net (result 127.0.0.6 = spam source)
19spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
17blackholes.brainerd.net
12blackholes.uceb.org (result 127.0.0.5 = dialup)
10spamguard.leadmon.net (result 127.0.0.3 = spam source)
9ohps.dnsbl.net.au
5dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
5dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
4spamsites.dnsbl.net.au
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
3osrs.dnsbl.net.au
3no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
3dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
2owps.dnsbl.net.au
2osps.dnsbl.net.au
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1omrs.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
1dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)


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

HitsDNS Zone
235606(total number of IP addresses whose names were tested, including 524 at SDSC)
159472(union of all domain zones)
140782l1.apews.org
107633rddn.dnsbl.net.au
107104abuse.rfc-ignorant.org
63544dynamic.rhs.mailpolice.com
57770whois.rfc-ignorant.org (union of all results)
38719whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
19053whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
12485webmail.rhs.mailpolice.com
760multi.uribl.com (union of all results)
757multi.uribl.com (result 127.0.0.2 = spam resource)
755multi.surbl.org
520adv.rhs.mailpolice.com
149postmaster.rfc-ignorant.org
123bulk.rhs.mailpolice.com
114bl.deadbeef.com
112dsn.rfc-ignorant.org (zone not intended for this use)
112rhsbl.ahbl.org
106bogusmx.rfc-ignorant.org
27porn.rhs.mailpolice.com
14rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
14rhsbl.sorbs.net (union of all results)
5blackhole.securitysage.com
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2ex.dnsbl.org
1multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
1fraud.rhs.mailpolice.com


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

HitsDNS Zone
199536(total number of domains tested, including 479 at SDSC)
42927(union of all domain zones)
26001whois.rfc-ignorant.org (union of all results)
25272whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
5625abuse.rfc-ignorant.org
4372bogusmx.rfc-ignorant.org
3385multi.surbl.org
2896multi.uribl.com (union of all results)
2836multi.uribl.com (result 127.0.0.2 = spam resource)
2434l1.apews.org
2135webmail.rhs.mailpolice.com
2052postmaster.rfc-ignorant.org
1118dsn.rfc-ignorant.org
881porn.rhs.mailpolice.com
729whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
499rhsbl.ahbl.org
472bulk.rhs.mailpolice.com
217adv.rhs.mailpolice.com
180blackhole.securitysage.com
172rddn.dnsbl.net.au (zone not intended for this use)
137dynamic.rhs.mailpolice.com
97rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
97rhsbl.sorbs.net (union of all results)
54multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
13ex.dnsbl.org
6multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
3fraud.rhs.mailpolice.com
3bl.deadbeef.com
1cart00ney.surriel.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 5 October 2007.