Blacklists Compared

6 March 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
25093(total number of IP addresses tested, including 386 at SDSC)
18905(union of most IP zones)
13484t1.dnsbl.net.au
11150block.blars.org
10888blackholes.five-ten-sg.com (union of all results)
10470dnsbl.sorbs.net (union of all results)
9839blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
9723sbl-xbl.spamhaus.org (union of all results)
8466cbl.abuseat.org
8406xbl.spamhaus.org
8403sbl-xbl.spamhaus.org (result 127.0.0.4 = Spamhaus XBL)
7711unconfirmed.dsbl.org
7531list.dsbl.org
7530dsbl.dnsbl.net.au
6713dynablock.njabl.org
6612dnsbl.sorbs.net (result 127.0.0.10 = dialup)
5418dnsbl.njabl.org (union of all results)
4928no-more-funn.moensted.dk (union of all results)
4049sbl.csma.biz
3811bl.spamcop.net
3698dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3644cn-kr.blackholes.us (union of all results)
3396dnsbl.ahbl.org (union of all results)
2948l2.spews.dnsbl.sorbs.net
2874ipwhois.rfc-ignorant.org
2706psbl.surriel.com
2615spews.dnsbl.net.au
2603dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2554no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
2550l1.spews.dnsbl.sorbs.net
2417spam.wytnij.to
2260dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
2219unsure.nether.net
2180dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
2147cn-kr.blackholes.us (result 127.0.0.2 = China)
2147china.blackholes.us
1848pdl.blackholes.us
1771no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1654bl.csma.biz
1497cn-kr.blackholes.us (result 127.0.0.3 = Korea)
1497korea.blackholes.us
1484sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1484sbl.spamhaus.org
1450korea.services.net
1421rmst.dnsbl.net.au
1326spamsources.fabel.dk
1189wpbl.dnsbl.net.au
1101relays.visi.com
1038dnsbl.njabl.org (result 127.0.0.3 = dialup)
937comcast.blackholes.us
852dnsbl.sorbs.net (result 127.0.0.6 = spam source)
785dnsbl.ahbl.org (result 127.0.0.4 = spam source)
754ybl.megacity.org
717blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
703opm.blitzed.org
689blacklist.spambag.org
649ricn.dnsbl.net.au
596spamguard.leadmon.net (union of all results)
587spamguard.leadmon.net (result 127.0.0.2 = dialup)
548pss.spambusters.org.ar
510brazil.blackholes.us
475cw.blackholes.us
454dnsbl.njabl.org (result 127.0.0.4 = spam source)
451taiwan.blackholes.us
385level3.blackholes.us
383probes.dnsbl.net.au
374work.drbl.croco.net
366rr.blackholes.us
319blackholes.intersil.net
303hil.habeas.com
302no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
300rbl.rangers.eu.org (union of all results)
264japan.blackholes.us
249dnsbl.njabl.org (result 127.0.0.2 = source or relay)
233blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
224no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
217charter.blackholes.us
213dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
204mexico.blackholes.us
199dnsbl.antispam.or.id
194hongkong.blackholes.us
186wanadoo-fr.blackholes.us
178qwest.blackholes.us
170relays.ordb.org
169multihop.dsbl.org
160osps.dnsbl.net.au
150interbusiness.blackholes.us
149russia.blackholes.us
133no-more-funn.moensted.dk (result 127.0.0.9 = misc)
131rbl.rangers.eu.org (result 127.0.0.4 = dialup)
130ohps.dnsbl.net.au
128verio.blackholes.us
128dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
128dialup.blacklist.jippg.org (union of all results)
119turkey.blackholes.us
119tr.countries.nerd.dk
117mail-abuse.blacklist.jippg.org
116argentina.blackholes.us
113dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
106osrs.dnsbl.net.au
95xo.blackholes.us
92internap.blackholes.us
89relays.nether.net
88dun.dnsrbl.net
84rbl.rangers.eu.org (result 127.0.0.3 = spam haven)
82query.bondedsender.org (not a blacklist!)
75flowgoaway.com
63telstra.blackholes.us
63singapore.blackholes.us
61he.blackholes.us
61sbbl.they.com
60infolink.blackholes.us
54dnsbl.sorbs.net (result 127.0.0.5 = open relay)
52blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
51rogers.blackholes.us
50dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
483y.spam.mrs.kithrup.com
47inflow.blackholes.us
47bellsouth.blackholes.us
47spam.exsilia.net (union of all results)
46a2000.blackholes.us
44rdts.dnsbl.net.au
44ph.rbl.cluecentral.net
43malaysia.blackholes.us
42rbl.rangers.eu.org (result 127.0.0.2 = spam source)
39thailand.blackholes.us
38covad.blackholes.us
37yipes.blackholes.us
36blackholes.brainerd.net
35broadwing.blackholes.us
35above.blackholes.us
35spam.exsilia.net (result 127.0.0.2 = spam source)
35blackholes.uceb.org (union of all results)
33nigeria.blackholes.us
32cybercon.blackholes.us
31rbl.rangers.eu.org (result 127.0.0.10 = virus notices)
28swbell.blackholes.us
24blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
23rackspace.blackholes.us
21exemptions.ahbl.org (not a blacklist!)
19satos.rbl.cluecentral.net
18eli.blackholes.us
18blackholes.uceb.org (result 127.0.0.2 = open relay)
14spamsources.yamta.org (result 127.0.0.2 = spam source)
14blackholes.uceb.org (result 127.0.0.3 = spam source)
14owps.dnsbl.net.au
14bl.deadbeef.com
13affinity.blackholes.us
12maxim.blackholes.us
12spam.exsilia.net (result 127.0.0.3 = virus source)
10olm.blackholes.us
10burst.blackholes.us
10blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
9pajo.blackholes.us
9spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
9relays.bl.kundenserver.de
8blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
7dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
6navisite.blackholes.us
6epoch.blackholes.us
6rbl.rangers.eu.org (result 127.0.0.1 = misc)
5no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
4blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
3blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
3rbl.rangers.eu.org (result 127.0.0.9 = virus source)
2rbl.rangers.eu.org (result 127.0.0.5 = relay output)
2dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
2no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
1ciberlynx.blackholes.us
1rbl.rangers.eu.org (result 127.0.0.8 = source or relay)
1spamsites.dnsbl.net.au
1dev.null.dk
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1dnsbl.ahbl.org (result 127.0.0.15 = open relay)
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
25093(total number of IP addresses whose names were tested, including 386 at SDSC)
11215(union of all domain zones)
7614abuse.rfc-ignorant.org
6284rddn.dnsbl.net.au
3477whois.rfc-ignorant.org (union of all results)
2314whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1163whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
809bulk.rhs.mailpolice.com
447rhsbl.ahbl.org
416blackhole.securitysage.com
275bl.deadbeef.com
54porn.rhs.mailpolice.com
20postmaster.rfc-ignorant.org
13dsn.rfc-ignorant.org (zone not intended for this use)
11bogusmx.rfc-ignorant.org

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

HitsDNS Zone
17839(total number of domains tested, including 366 at SDSC)
5501(union of all domain zones)
2062whois.rfc-ignorant.org (union of all results)
1774whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1663abuse.rfc-ignorant.org
1395bulk.rhs.mailpolice.com
908rhsbl.ahbl.org
821blackhole.securitysage.com
736postmaster.rfc-ignorant.org
647dsn.rfc-ignorant.org
288whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
143bogusmx.rfc-ignorant.org
89bl.deadbeef.com
65porn.rhs.mailpolice.com
19rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
19rhsbl.sorbs.net (union of all results)
18rddn.dnsbl.net.au (zone not intended for this use)
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 21 March 2004.