Blacklists Compared

30 September 2006

[ 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 exemptions.ahbl.org and query.bondedsender.org zones because they are not blacklists, and because it is too aggressive to be widely useful the block.blars.org zone is also excluded.

HitsDNS Zone
96107(total number of IP addresses tested, including 510 at SDSC)
88717(union of most IP zones)
69578t1.dnsbl.net.au
59267block.blars.org
53683dnsbl.sorbs.net (union of all results)
48117psbl.surriel.com
47740zen.spamhaus.org (union of all results)
47525sbl-xbl.spamhaus.org (union of all results)
46715xbl.spamhaus.org (union of all results)
46049blackholes.five-ten-sg.com (union of all results)
45659cbl.abuseat.org
45614zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
45614sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
45612xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
44618blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
43628dnsbl.sorbs.net (result 127.0.0.10 = dialup)
42107dnsbl.tqmcube.com (union of all results)
40887no-more-funn.moensted.dk (union of all results)
30548dynablock.njabl.org
24793no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
22031dnsbl-2.uceprotect.net
20634dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
19884dnsbl-1.uceprotect.net
14813bl.spamcop.net
14467cn-kr.blackholes.us (result 127.0.0.2 = China)
14467cn-kr.blackholes.us (union of all results)
13173no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
10088unconfirmed.dsbl.org
9974bl.csma.biz
9963list.dsbl.org
9959dsbl.dnsbl.net.au
9716china.blackholes.us
9619dnsbl.tqmcube.com (result 127.0.0.5 = China)
9036dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
8753blacklist.spambag.org
7243dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
6010dnsbl.njabl.org (union of all results)
5703dnsbl-3.uceprotect.net
5336wpbl.dnsbl.net.au
4773dnsbl.sorbs.net (result 127.0.0.6 = spam source)
4742korea.blackholes.us
4613dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
4555dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3958korea.services.net
3709brazil.blackholes.us
3629unsure.nether.net
3495rmst.dnsbl.net.au
3336dnsbl.ahbl.org (union of all results)
3066zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
3066xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
3066sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
3046dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2955ubl.unsubscore.com
2788no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
2783spamsources.fabel.dk
2624mail-abuse.blacklist.jippg.org
1960dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1880tr.countries.nerd.dk
1867turkey.blackholes.us
1862combined-hib.dnsiplists.completewhois.com (union of all results)
1857combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
1761argentina.blackholes.us
1612dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1264probes.dnsbl.net.au
1217dnsbl.njabl.org (result 127.0.0.3 = dialup)
1146taiwan.blackholes.us
1113japan.blackholes.us
1054russia.blackholes.us
981sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
981sbl.spamhaus.org
979zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
866blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
824zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL)
803mexico.blackholes.us
637thailand.blackholes.us
525no-more-funn.moensted.dk (result 127.0.0.9 = misc)
503malaysia.blackholes.us
501l1.spews.dnsbl.sorbs.net
376l2.spews.dnsbl.sorbs.net
291singapore.blackholes.us
273hongkong.blackholes.us
271blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
271dnsbl.ahbl.org (result 127.0.0.4 = spam source)
255no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
213blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
190sbl.csma.biz
183spam.wytnij.to
178blackholes.uceb.org (union of all results)
155work.drbl.croco.net
132dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
132dnsbl.njabl.org (result 127.0.0.4 = spam source)
126query.bondedsender.org (not a blacklist!)
121blackholes.uceb.org (result 127.0.0.3 = spam source)
113dnsbl.njabl.org (result 127.0.0.2 = open relay)
96multihop.dsbl.org
73flowgoaway.com
73blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
69dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
66dnsbl.antispam.or.id
63relays.ordb.org
61ohps.dnsbl.net.au
49blackholes.uceb.org (result 127.0.0.5 = dialup)
44ricn.dnsbl.net.au
25spamguard.leadmon.net (union of all results)
23osps.dnsbl.net.au
22spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
21rdts.dnsbl.net.au
21bl.spamcannibal.org
18nigeria.blackholes.us
18tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
18tor.dnsbl.sectoor.de (union of all results)
17relays.nether.net
12multi.surbl.org
12dnsbl.sorbs.net (result 127.0.0.5 = open relay)
12exemptions.ahbl.org (not a blacklist!)
8blackholes.uceb.org (result 127.0.0.2 = open relay)
8dnsbl.ahbl.org (result 127.0.0.15 = open relay)
8dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
6dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
5blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
5combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
4owps.dnsbl.net.au
4hil.habeas.com
4blackholes.brainerd.net
3osrs.dnsbl.net.au
3spamguard.leadmon.net (result 127.0.0.3 = spam source)
3blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
2bl.deadbeef.com
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1dnsbl.ahbl.org (result 127.0.0.18 = virus source)
1dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)

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

HitsDNS Zone
96107(total number of IP addresses whose names were tested, including 510 at SDSC)
57269(union of all domain zones)
40516rddn.dnsbl.net.au
39874abuse.rfc-ignorant.org
28466dynamic.rhs.mailpolice.com
28123whois.rfc-ignorant.org (union of all results)
19243whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
8881whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2872webmail.rhs.mailpolice.com
542adv.rhs.mailpolice.com
401rhsbl.ahbl.org
394postmaster.rfc-ignorant.org
278multi.surbl.org
101bulk.rhs.mailpolice.com
82bogusmx.rfc-ignorant.org
73dsn.rfc-ignorant.org (zone not intended for this use)
5porn.rhs.mailpolice.com
1blackhole.securitysage.com

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

HitsDNS Zone
52918(total number of domains tested, including 434 at SDSC)
10465(union of all domain zones)
3331abuse.rfc-ignorant.org
3320whois.rfc-ignorant.org (union of all results)
2697whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2052multi.surbl.org
1535postmaster.rfc-ignorant.org
1211webmail.rhs.mailpolice.com
942dsn.rfc-ignorant.org
879bogusmx.rfc-ignorant.org
679rhsbl.ahbl.org
623whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
237bulk.rhs.mailpolice.com
208adv.rhs.mailpolice.com
192porn.rhs.mailpolice.com
147blackhole.securitysage.com
59rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
59rhsbl.sorbs.net (union of all results)
21rddn.dnsbl.net.au (zone not intended for this use)
21ex.dnsbl.org
7dynamic.rhs.mailpolice.com
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 6 October 2006.