Blacklists Compared

21 January 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
74191(total number of IP addresses tested, including 485 at SDSC)
65982(union of most IP zones)
46989block.blars.org
42239dnsbl.sorbs.net (union of all results)
36139t1.dnsbl.net.au
35910blackholes.five-ten-sg.com (union of all results)
34987blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
34057dnsbl.sorbs.net (result 127.0.0.10 = dialup)
29195sbl-xbl.spamhaus.org (union of all results)
27267xbl.spamhaus.org (union of all results)
25669xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
25668sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
25487cbl.abuseat.org
23807dynablock.njabl.org
23701psbl.surriel.com
20241no-more-funn.moensted.dk (union of all results)
13950cn-kr.blackholes.us (result 127.0.0.2 = China)
13950cn-kr.blackholes.us (union of all results)
13394sbl.csma.biz
12725unconfirmed.dsbl.org
12644dsbl.dnsbl.net.au
12644list.dsbl.org
11384blacklist.spambag.org
11007no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
10411bl.spamcop.net
9305china.blackholes.us
7117dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
6608bl.csma.biz
6603l2.spews.dnsbl.sorbs.net
6456combined-hib.dnsiplists.completewhois.com (union of all results)
6446combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
6035l1.spews.dnsbl.sorbs.net
6033spews.dnsbl.net.au
5635dnsbl.sorbs.net (result 127.0.0.6 = spam source)
5044unsure.nether.net
4645korea.blackholes.us
4611wpbl.dnsbl.net.au
4600korea.services.net
4588dnsbl.rangers.eu.org (union of all results)
4429no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
4211dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
4098no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
3797dnsbl.njabl.org (union of all results)
3366dnsbl.ahbl.org (union of all results)
3232rmst.dnsbl.net.au
2603ricn.dnsbl.net.au
2590dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2450spamsources.fabel.dk
2291sbl.spamhaus.org
2280sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
2164dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2135opm.blitzed.org
2134xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2129sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2004brazil.blackholes.us
1850japan.blackholes.us
1557spam.wytnij.to
1507russia.blackholes.us
1468sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1467xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1364dnsbl.antispam.or.id
1297dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1217dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1190dnsbl.ahbl.org (result 127.0.0.4 = spam source)
1157taiwan.blackholes.us
1003bl.spamcannibal.org
975turkey.blackholes.us
966dnsbl.njabl.org (result 127.0.0.3 = dialup)
951probes.dnsbl.net.au
918mexico.blackholes.us
909tr.countries.nerd.dk
871mail-abuse.blacklist.jippg.org
480argentina.blackholes.us
463malaysia.blackholes.us
405hongkong.blackholes.us
373no-more-funn.moensted.dk (result 127.0.0.9 = misc)
364blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
349blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
346no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
341thailand.blackholes.us
292dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
189query.bondedsender.org (not a blacklist!)
186singapore.blackholes.us
160blackholes.intersil.net
160blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
149relays.ordb.org
148dnsbl.njabl.org (result 127.0.0.2 = open relay)
110dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
105dnsbl.njabl.org (result 127.0.0.4 = spam source)
103ohps.dnsbl.net.au
96flowgoaway.com
67dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
66dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
62multihop.dsbl.org
61dnsbl.regedit64.net
38blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
31osps.dnsbl.net.au
21relays.nether.net
20rdts.dnsbl.net.au
20blackholes.uceb.org (union of all results)
18nigeria.blackholes.us
17dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
16spamguard.leadmon.net (union of all results)
15tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
15osrs.dnsbl.net.au
15hil.habeas.com
15tor.dnsbl.sectoor.de (union of all results)
13spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
13dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
13exemptions.ahbl.org (not a blacklist!)
11dnsbl.sorbs.net (result 127.0.0.5 = open relay)
10blackholes.uceb.org (result 127.0.0.6 = spam haven)
10combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
10blackholes.brainerd.net
5blackholes.uceb.org (result 127.0.0.3 = spam source)
5blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
5dnsbl.ahbl.org (result 127.0.0.15 = open relay)
3blackholes.uceb.org (result 127.0.0.2 = open relay)
3owps.dnsbl.net.au
3blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
3blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
3bl.deadbeef.com
2blackholes.uceb.org (result 127.0.0.5 = dialup)
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2spamsites.dnsbl.net.au
2spamguard.leadmon.net (result 127.0.0.8 = open proxy)
1blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1omrs.dnsbl.net.au
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)

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
74191(total number of IP addresses whose names were tested, including 485 at SDSC)
42629(union of all domain zones)
28541rddn.dnsbl.net.au
27391abuse.rfc-ignorant.org
20840whois.rfc-ignorant.org (union of all results)
17239whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
12004dynamic.rhs.mailpolice.com
3601whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2577webmail.rhs.mailpolice.com
1380rhsbl.ahbl.org
855bl.deadbeef.com
487adv.rhs.mailpolice.com
388bulk.rhs.mailpolice.com
297postmaster.rfc-ignorant.org
123bogusmx.rfc-ignorant.org
113dsn.rfc-ignorant.org (zone not intended for this use)
3blackhole.securitysage.com
2porn.rhs.mailpolice.com
1cart00ney.surriel.com

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

HitsDNS Zone
37698(total number of domains tested, including 443 at SDSC)
8199(union of all domain zones)
2889whois.rfc-ignorant.org (union of all results)
2634abuse.rfc-ignorant.org
2349whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1370rhsbl.ahbl.org
1301postmaster.rfc-ignorant.org
1029webmail.rhs.mailpolice.com
873dsn.rfc-ignorant.org
642bogusmx.rfc-ignorant.org
540whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
425bulk.rhs.mailpolice.com
205adv.rhs.mailpolice.com
141blackhole.securitysage.com
136porn.rhs.mailpolice.com
126bl.deadbeef.com
112rddn.dnsbl.net.au (zone not intended for this use)
52dynamic.rhs.mailpolice.com
28rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
28rhsbl.sorbs.net (union of all results)
14ex.dnsbl.org
2fraud.rhs.mailpolice.com
1cart00ney.surriel.com

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