Blacklists Compared

24 June 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
85100(total number of IP addresses tested, including 500 at SDSC)
77365(union of most IP zones)
54836block.blars.org
45826dnsbl.sorbs.net (union of all results)
40996dnsbl.tqmcube.com (union of all results)
38529t1.dnsbl.net.au
35762dnsbl.sorbs.net (result 127.0.0.10 = dialup)
33505blackholes.five-ten-sg.com (union of all results)
32377blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
31509sbl-xbl.spamhaus.org (union of all results)
30657xbl.spamhaus.org (union of all results)
28755cbl.abuseat.org
28589xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
28579sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
26991dynablock.njabl.org
26148psbl.surriel.com
23257cn-kr.blackholes.us (result 127.0.0.2 = China)
23257cn-kr.blackholes.us (union of all results)
22316dnsbl.tqmcube.com (result 127.0.0.5 = China)
18195sbl.csma.biz
17149china.blackholes.us
14475no-more-funn.moensted.dk (union of all results)
12202dnsbl-2.uceprotect.net
11910dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
11474unconfirmed.dsbl.org
11358list.dsbl.org
11356dsbl.dnsbl.net.au
11286dnsbl-1.uceprotect.net
10929bl.spamcop.net
9769blacklist.spambag.org
9732bl.csma.biz
8434combined-hib.dnsiplists.completewhois.com (union of all results)
8431combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
7945dnsbl.sorbs.net (result 127.0.0.6 = spam source)
7104dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
6646dnsbl.njabl.org (union of all results)
6506no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
6278wpbl.dnsbl.net.au
6269korea.services.net
6104korea.blackholes.us
5332dnsbl.njabl.org (result 127.0.0.9 = open proxy)
4273no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
4217l2.spews.dnsbl.sorbs.net
4194dnsbl.ahbl.org (union of all results)
4079xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
4079sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
3810dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
3788unsure.nether.net
3782spamsources.fabel.dk
3664dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
3406rmst.dnsbl.net.au
3199no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
3138l1.spews.dnsbl.sorbs.net
2940brazil.blackholes.us
2631spews.dnsbl.net.au
2517dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
2202ricn.dnsbl.net.au
1998mail-abuse.blacklist.jippg.org
1659dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1552taiwan.blackholes.us
1389tr.countries.nerd.dk
1384turkey.blackholes.us
1367japan.blackholes.us
1267dnsbl-3.uceprotect.net
1174bl.spamcannibal.org
1073sbl.spamhaus.org
1072sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
964dnsbl.njabl.org (result 127.0.0.3 = dialup)
880probes.dnsbl.net.au
776russia.blackholes.us
776mexico.blackholes.us
733argentina.blackholes.us
683blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
427malaysia.blackholes.us
372thailand.blackholes.us
368hongkong.blackholes.us
354dnsbl.ahbl.org (result 127.0.0.4 = spam source)
348dnsbl.antispam.or.id
290singapore.blackholes.us
242dnsbl.njabl.org (result 127.0.0.4 = spam source)
242no-more-funn.moensted.dk (result 127.0.0.9 = misc)
234no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
208blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
193ohps.dnsbl.net.au
170blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
149query.bondedsender.org (not a blacklist!)
148blackholes.intersil.net
142dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
132work.drbl.croco.net
122spam.wytnij.to
115dnsbl.njabl.org (result 127.0.0.2 = open relay)
102dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
86multihop.dsbl.org
82flowgoaway.com
65relays.ordb.org
51blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
35dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
29relays.nether.net
28osps.dnsbl.net.au
22no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
20rdts.dnsbl.net.au
20blackholes.uceb.org (union of all results)
19exemptions.ahbl.org (not a blacklist!)
17nigeria.blackholes.us
17spamguard.leadmon.net (union of all results)
16dnsbl.ahbl.org (result 127.0.0.15 = open relay)
15tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
15tor.dnsbl.sectoor.de (union of all results)
12spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
12hil.habeas.com
11blackholes.uceb.org (result 127.0.0.2 = open relay)
10dnsbl.sorbs.net (result 127.0.0.5 = open relay)
8owps.dnsbl.net.au
7blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
7blackholes.brainerd.net
6blackholes.uceb.org (result 127.0.0.3 = spam source)
6osrs.dnsbl.net.au
6blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
4spamguard.leadmon.net (result 127.0.0.3 = spam source)
3bl.deadbeef.com
3combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
2blackholes.uceb.org (result 127.0.0.5 = dialup)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
1omrs.dnsbl.net.au
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)

The blackholes.intersil.net zone "lists entrenched spammers, mainsleaze and mainsleaze wannabes who have pestered users at Intersil." The flowgoaway.com zone lists FloNetwork systems.

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

HitsDNS Zone
85100(total number of IP addresses whose names were tested, including 500 at SDSC)
43181(union of all domain zones)
33130abuse.rfc-ignorant.org
29357rddn.dnsbl.net.au
22321dynamic.rhs.mailpolice.com
21287whois.rfc-ignorant.org (union of all results)
16300whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
4991whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3042webmail.rhs.mailpolice.com
607rhsbl.ahbl.org
499adv.rhs.mailpolice.com
278postmaster.rfc-ignorant.org
105dsn.rfc-ignorant.org (zone not intended for this use)
102bogusmx.rfc-ignorant.org
76bulk.rhs.mailpolice.com
5porn.rhs.mailpolice.com
2cart00ney.surriel.com

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

HitsDNS Zone
46897(total number of domains tested, including 407 at SDSC)
9772(union of all domain zones)
3706whois.rfc-ignorant.org (union of all results)
3267abuse.rfc-ignorant.org
3082whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1614webmail.rhs.mailpolice.com
1585rhsbl.ahbl.org
1325postmaster.rfc-ignorant.org
1002dsn.rfc-ignorant.org
765bogusmx.rfc-ignorant.org
624whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
258porn.rhs.mailpolice.com
197adv.rhs.mailpolice.com
194bulk.rhs.mailpolice.com
186blackhole.securitysage.com
51rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
51rhsbl.sorbs.net (union of all results)
36rddn.dnsbl.net.au (zone not intended for this use)
19dynamic.rhs.mailpolice.com
17ex.dnsbl.org
1fraud.rhs.mailpolice.com
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 9 July 2006.