Blacklists Compared

29 January 2005

[ 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.

HitsDNS Zone
35261(total number of IP addresses tested, including 438 at SDSC)
29992(union of most IP zones)
24336t1.dnsbl.net.au
21192blackholes.five-ten-sg.com (union of all results)
20378blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
16556dnsbl.sorbs.net (union of all results)
13815sbl-xbl.spamhaus.org (union of all results)
12637cn-kr.blackholes.us (union of all results)
12540xbl.spamhaus.org (union of all results)
12480no-more-funn.moensted.dk (union of all results)
11762xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11762sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11759cbl.abuseat.org
11453dnsbl.sorbs.net (result 127.0.0.10 = dialup)
9748dynablock.njabl.org
9731cn-kr.blackholes.us (result 127.0.0.3 = Korea)
9731korea.blackholes.us
9723korea.services.net
9252no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
8995unconfirmed.dsbl.org
8879list.dsbl.org
8877dsbl.dnsbl.net.au
8048rmst.dnsbl.net.au
7785combined-hib.dnsiplists.completewhois.com (union of all results)
7758combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
6400sbl.csma.biz
5010psbl.surriel.com
4559ricn.dnsbl.net.au
4135bl.csma.biz
3761blacklist.spambag.org
3753bl.spamcop.net
3727dnsbl.njabl.org (union of all results)
3351wpbl.dnsbl.net.au
3240dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2906cn-kr.blackholes.us (result 127.0.0.2 = China)
2906china.blackholes.us
2590dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2582dnsbl.ahbl.org (union of all results)
2476spamsources.fabel.dk
2436l2.spews.dnsbl.sorbs.net
2404sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2402xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2345opm.blitzed.org
2118spews.dnsbl.net.au
2051l1.spews.dnsbl.sorbs.net
2034dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1892spam.wytnij.to
1721pdl.blackholes.us
1683dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1532no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1448sbl.spamhaus.org
1427sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1306dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1271dnsbl.regedit64.net
1157dnsbl.rangers.eu.org (union of all results)
1153probes.dnsbl.net.au
1128bl.spamcannibal.org
1057dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
949unsure.nether.net
946no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
939dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
913dnsbl.njabl.org (result 127.0.0.3 = dialup)
868dnsbl.ahbl.org (result 127.0.0.4 = spam source)
852brazil.blackholes.us
742dnsbl.antispam.or.id
572japan.blackholes.us
515no-more-funn.moensted.dk (result 127.0.0.9 = misc)
514level3.blackholes.us
497ybl.megacity.org
489blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
476taiwan.blackholes.us
369comcast.blackholes.us
314cw.blackholes.us
283mexico.blackholes.us
280charter.blackholes.us
271rr.blackholes.us
254no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
247russia.blackholes.us
233qwest.blackholes.us
227blackholes.intersil.net
217blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
211mail-abuse.blacklist.jippg.org
210interbusiness.blackholes.us
181argentina.blackholes.us
176hongkong.blackholes.us
153query.bondedsender.org (not a blacklist!)
149tr.countries.nerd.dk
148xo.blackholes.us
148turkey.blackholes.us
139dialup.blacklist.jippg.org (union of all results)
138dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
129dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
122dnsbl.njabl.org (result 127.0.0.4 = spam source)
117above.blackholes.us
116dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
114dnsbl.njabl.org (result 127.0.0.2 = source or relay)
113verio.blackholes.us
111wanadoo-fr.blackholes.us
104malaysia.blackholes.us
103ohps.dnsbl.net.au
100multihop.dsbl.org
94internap.blackholes.us
94relays.ordb.org
91singapore.blackholes.us
90thailand.blackholes.us
89flowgoaway.com
66dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
61cybercon.blackholes.us
56blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
55osps.dnsbl.net.au
50bellsouth.blackholes.us
49he.blackholes.us
45covad.blackholes.us
45ph.rbl.cluecentral.net
37nigeria.blackholes.us
36inflow.blackholes.us
35rogers.blackholes.us
34osrs.dnsbl.net.au
34blackholes.uceb.org (union of all results)
33relays.nether.net
32telstra.blackholes.us
30blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
27rdts.dnsbl.net.au
27combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
27dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
25a2000.blackholes.us
25dnsbl.ahbl.org (result 127.0.0.15 = open relay)
23epoch.blackholes.us
22dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
21yipes.blackholes.us
20blackholes.uceb.org (result 127.0.0.3 = spam source)
20blackholes.brainerd.net
19rackspace.blackholes.us
19dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
18infolink.blackholes.us
18eli.blackholes.us
18exemptions.ahbl.org (not a blacklist!)
17maxim.blackholes.us
17blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
16dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
14blackholes.uceb.org (result 127.0.0.2 = open relay)
12olm.blackholes.us
11dnsbl.sorbs.net (result 127.0.0.5 = open relay)
10spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
10satos.rbl.cluecentral.net
10spamguard.leadmon.net (union of all results)
9navisite.blackholes.us
9broadwing.blackholes.us
9affinity.blackholes.us
8swbell.blackholes.us
8hil.habeas.com
6pajo.blackholes.us
5owps.dnsbl.net.au
5blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
4media3.blackholes.us
3work.drbl.croco.net
3bl.deadbeef.com
3dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
2burst.blackholes.us
2owfs.dnsbl.net.au
1ciberlynx.blackholes.us
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1omrs.dnsbl.net.au
1relays.bl.kundenserver.de
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
1no-more-funn.moensted.dk (result 127.0.0.5 = relay output)

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
35261(total number of IP addresses whose names were tested, including 438 at SDSC)
13038(union of all domain zones)
9368abuse.rfc-ignorant.org
6586rddn.dnsbl.net.au
3432whois.rfc-ignorant.org (union of all results)
3030dynamic.rhs.mailpolice.com
2402whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1514webmail.rhs.mailpolice.com
1031whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
550bulk.rhs.mailpolice.com
465rhsbl.ahbl.org
331adv.rhs.mailpolice.com
257bl.deadbeef.com
24dsn.rfc-ignorant.org (zone not intended for this use)
22postmaster.rfc-ignorant.org
11porn.rhs.mailpolice.com
6fraud.rhs.mailpolice.com
4cart00ney.surriel.com
1blackhole.securitysage.com
1bogusmx.rfc-ignorant.org

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

HitsDNS Zone
25352(total number of domains tested, including 301 at SDSC)
7456(union of all domain zones)
2797whois.rfc-ignorant.org (union of all results)
2413abuse.rfc-ignorant.org
2319whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1220postmaster.rfc-ignorant.org
1058dsn.rfc-ignorant.org
1030webmail.rhs.mailpolice.com
834bulk.rhs.mailpolice.com
749rhsbl.ahbl.org
478whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
375bogusmx.rfc-ignorant.org
252blackhole.securitysage.com
199adv.rhs.mailpolice.com
190bl.deadbeef.com
110rddn.dnsbl.net.au (zone not intended for this use)
106porn.rhs.mailpolice.com
59rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
59rhsbl.sorbs.net (union of all results)
47dynamic.rhs.mailpolice.com
17ex.dnsbl.org
2cart00ney.surriel.com
1fraud.rhs.mailpolice.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 11 February 2005.