Blacklists Compared

7 August 2004

[ 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
29359(total number of IP addresses tested, including 414 at SDSC)
23768(union of most IP zones)
17927t1.dnsbl.net.au
17467block.blars.org
16166blackholes.five-ten-sg.com (union of all results)
15468blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
11875sbl-xbl.spamhaus.org (union of all results)
11539dnsbl.sorbs.net (union of all results)
10607xbl.spamhaus.org (union of all results)
10506cbl.abuseat.org
10501sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
10500xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
8783unconfirmed.dsbl.org
8679list.dsbl.org
8678dsbl.dnsbl.net.au
8257dynablock.njabl.org
8103no-more-funn.moensted.dk (union of all results)
7813dnsbl.sorbs.net (result 127.0.0.10 = dialup)
7321cn-kr.blackholes.us (union of all results)
4906sbl.csma.biz
4516cn-kr.blackholes.us (result 127.0.0.3 = Korea)
4516korea.blackholes.us
4510korea.services.net
4496ipwhois.rfc-ignorant.org
4447no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
4220bl.spamcop.net
4043dnsbl.njabl.org (union of all results)
3794rmst.dnsbl.net.au
3496psbl.surriel.com
3141dnsbl.ahbl.org (union of all results)
2805cn-kr.blackholes.us (result 127.0.0.2 = China)
2805china.blackholes.us
2729wpbl.dnsbl.net.au
2675blacklist.spambag.org
2458l2.spews.dnsbl.sorbs.net
2266dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2093ricn.dnsbl.net.au
2092l1.spews.dnsbl.sorbs.net
2090spews.dnsbl.net.au
1952dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1903no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1834unsure.nether.net
1828pdl.blackholes.us
1787spamsources.fabel.dk
1693dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1509dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1375bl.csma.biz
1352sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1352sbl.spamhaus.org
1299dnsbl.njabl.org (result 127.0.0.3 = dialup)
1243dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1220xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1219sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1215opm.blitzed.org
1155spam.wytnij.to
1070dnsbl.ahbl.org (result 127.0.0.4 = spam source)
972work.drbl.croco.net
847brazil.blackholes.us
815no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
811japan.blackholes.us
735no-more-funn.moensted.dk (result 127.0.0.9 = misc)
620level3.blackholes.us
616spamguard.leadmon.net (union of all results)
602probes.dnsbl.net.au
558spamguard.leadmon.net (result 127.0.0.2 = dialup)
538ybl.megacity.org
498dun.dnsrbl.net
485cw.blackholes.us
481taiwan.blackholes.us
423dnsbl.rangers.eu.org (union of all results)
420dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
407hongkong.blackholes.us
374blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
336blackholes.intersil.net
330comcast.blackholes.us
312dnsbl.antispam.or.id
306dnsbl.njabl.org (result 127.0.0.2 = source or relay)
298relays.ordb.org
285charter.blackholes.us
273mexico.blackholes.us
254rr.blackholes.us
243dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
232no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
231blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
217qwest.blackholes.us
205relays.visi.com
197dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
192interbusiness.blackholes.us
191dnsbl.njabl.org (result 127.0.0.4 = spam source)
171turkey.blackholes.us
171tr.countries.nerd.dk
164wanadoo-fr.blackholes.us
163russia.blackholes.us
143argentina.blackholes.us
137ohps.dnsbl.net.au
124flowgoaway.com
123verio.blackholes.us
120singapore.blackholes.us
116osps.dnsbl.net.au
114dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
113dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
96xo.blackholes.us
93dialup.blacklist.jippg.org (union of all results)
92multihop.dsbl.org
91dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
86infolink.blackholes.us
76osrs.dnsbl.net.au
70internap.blackholes.us
68ph.rbl.cluecentral.net
65he.blackholes.us
64relays.nether.net
63malaysia.blackholes.us
59bellsouth.blackholes.us
58spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
57dnsbl.sorbs.net (result 127.0.0.5 = open relay)
54above.blackholes.us
54mail-abuse.blacklist.jippg.org
51thailand.blackholes.us
51cybercon.blackholes.us
42blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
41covad.blackholes.us
41dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
40telstra.blackholes.us
40inflow.blackholes.us
40query.bondedsender.org (not a blacklist!)
36rdts.dnsbl.net.au
32blackholes.uceb.org (union of all results)
31yipes.blackholes.us
31blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
30swbell.blackholes.us
29blackholes.brainerd.net
24eli.blackholes.us
24dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
23rackspace.blackholes.us
22hil.habeas.com
21dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
20rogers.blackholes.us
18sbbl.they.com
17nigeria.blackholes.us
17exemptions.ahbl.org (not a blacklist!)
16blackholes.uceb.org (result 127.0.0.2 = open relay)
15a2000.blackholes.us
14blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
12satos.rbl.cluecentral.net
10olm.blackholes.us
10burst.blackholes.us
10broadwing.blackholes.us
10blackholes.uceb.org (result 127.0.0.3 = spam source)
10relays.bl.kundenserver.de
10dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
8owps.dnsbl.net.au
7navisite.blackholes.us
6maxim.blackholes.us
6epoch.blackholes.us
6affinity.blackholes.us
6bl.deadbeef.com
6dnsbl.ahbl.org (result 127.0.0.15 = open relay)
5pajo.blackholes.us
5blackholes.uceb.org (result 127.0.0.6 = spam haven)
5no-more-funn.moensted.dk (result 127.0.0.11 = repeated probes)
5blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
5spam.dnsrbl.net
4dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
3omrs.dnsbl.net.au
3no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
3no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
2ciberlynx.blackholes.us
2dev.null.dk
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
2no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
1blackholes.uceb.org (result 127.0.0.4 = spam source network)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)

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
29359(total number of IP addresses whose names were tested, including 414 at SDSC)
12398(union of all domain zones)
9057abuse.rfc-ignorant.org
6731rddn.dnsbl.net.au
3365whois.rfc-ignorant.org (union of all results)
2023whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1342whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
737bulk.rhs.mailpolice.com
680rhsbl.ahbl.org
249bl.deadbeef.com
196blackhole.securitysage.com
18postmaster.rfc-ignorant.org
13porn.rhs.mailpolice.com
11dsn.rfc-ignorant.org (zone not intended for this use)
3bogusmx.rfc-ignorant.org

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

HitsDNS Zone
26048(total number of domains tested, including 286 at SDSC)
8192(union of all domain zones)
3958whois.rfc-ignorant.org (union of all results)
3525whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2411abuse.rfc-ignorant.org
1283bulk.rhs.mailpolice.com
1048rhsbl.ahbl.org
1000postmaster.rfc-ignorant.org
800dsn.rfc-ignorant.org
433whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
348blackhole.securitysage.com
272bogusmx.rfc-ignorant.org
216bl.deadbeef.com
77porn.rhs.mailpolice.com
60ex.dnsbl.org (union of all results)
55ex.dnsbl.org (result 127.0.0.2 = spamsites)
40rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
40rhsbl.sorbs.net (union of all results)
21rddn.dnsbl.net.au (zone not intended for this use)
5ex.dnsbl.org (result 127.0.0.3 = spam source)
2rhsbl.sorbs.net (result 127.0.0.12 = domain does not send mail)
2cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 17 August 2004.