Blacklists Compared

1 November 2003

[ 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 query.bondedsender.org zone because it is not a blacklist, and because they are too aggressive to be widely useful the xbl.selwerd.cx and block.blars.org zones are also excluded.

HitsDNS Zone
15434(total number of IP addresses tested, including 378 at SDSC)
11489(union of most IP zones)
7864t1.bl.reynolds.net.au
6051xbl.selwerd.cx
5511block.blars.org
5402blackholes.five-ten-sg.com (union of all results)
4433blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
4161dynablock.easynet.nl (result 127.0.0.2 = dialup)
4161wdl.bl.reynolds.net.au
4161dynablock.easynet.nl (union of all results)
4038cbl.abuseat.org
3324dnsbl.sorbs.net (union of all results)
3223unconfirmed.dsbl.org
2943list.dsbl.org
2941dsbl.bl.reynolds.net.au
2796wpb.bl.reynolds.net.au
2794blackholes.easynet.nl
2319dnsbl.njabl.org (union of all results)
1951psbl.surriel.com
1946cn-kr.blackholes.us (union of all results)
1689bl.spamcop.net
1587proxies.blackholes.easynet.nl
1537ipwhois.rfc-ignorant.org
1473l2.spews.dnsbl.sorbs.net
1387ricn.bl.reynolds.net.au
1305unsure.nether.net
1284bl.csma.biz
1232cn-kr.blackholes.us (result 127.0.0.2 = China)
1232china.blackholes.us
1155dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1078l1.spews.dnsbl.sorbs.net
1078spews.bl.reynolds.net.au
1054dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1003dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1001no-more-funn.moensted.dk (union of all results)
965sbl.spamhaus.org
734pss.spambusters.org.ar
714cn-kr.blackholes.us (result 127.0.0.3 = Korea)
714korea.blackholes.us
706korea.services.net
705spamsources.fabel.dk
674blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
655ybl.megacity.org
590pdl.bl.reynolds.net.au
586spam.wytnij.to
513rmst.bl.reynolds.net.au
499no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
496cw.blackholes.us
496dnsbl.sorbs.net (result 127.0.0.10 = dialup)
458dnsbl.njabl.org (result 127.0.0.4 = spam source)
456dnsbl.njabl.org (result 127.0.0.3 = dialup)
424no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
419blacklist.spambag.org
403spamguard.leadmon.net (union of all results)
390spamguard.leadmon.net (result 127.0.0.2 = dialup)
390work.drbl.croco.net
366opm.blitzed.org
364comcast.blackholes.us
362dnsbl.sorbs.net (result 127.0.0.6 = spam source)
358sbbl.they.com
333blackholes.intersil.net
322rr.blackholes.us
316brazil.blackholes.us
262taiwan.blackholes.us
260dnsbl.njabl.org (result 127.0.0.2 = source or relay)
259level3.blackholes.us
232multihop.dsbl.org
212blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
209relays.visi.com
167relays.ordb.org
160japan.blackholes.us
148russia.blackholes.us
145dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
1453y.spam.mrs.kithrup.com
132mail-abuse.blacklist.jippg.org
130verio.blackholes.us
130qwest.blackholes.us
126relays.bl.kundenserver.de
125charter.blackholes.us
124dialups.visi.com
114ohps.bl.reynolds.net.au
110xo.blackholes.us
107wanadoo-fr.blackholes.us
104osrs.bl.reynolds.net.au
102mexico.blackholes.us
102argentina.blackholes.us
97osps.bl.reynolds.net.au
93internap.blackholes.us
92dialup.blacklist.jippg.org (union of all results)
91query.bondedsender.org (not a blacklist!)
90dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
87blackholes.brainerd.net
83flowgoaway.com
79relays.nether.net
69rogers.blackholes.us
69blackholes.uceb.org (union of all results)
67tr.countries.nerd.dk
66turkey.blackholes.us
65interbusiness.blackholes.us
65dun.dnsrbl.net
63dnsbl.antispam.or.id
60he.blackholes.us
60probes.bl.reynolds.net.au
53rdts.bl.reynolds.net.au
49bellsouth.blackholes.us
47hongkong.blackholes.us
44nigeria.blackholes.us
44relaywatcher.n13mbl.com
43inflow.blackholes.us
42a2000.blackholes.us
40no-more-funn.moensted.dk (result 127.0.0.9 = misc)
39vox.schpider.com
37telstra.blackholes.us
36singapore.blackholes.us
36spam.exsilia.net (union of all results)
35above.blackholes.us
35blackholes.uceb.org (result 127.0.0.3 = spam source)
31dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
30blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
27blackholes.uceb.org (result 127.0.0.2 = open relay)
26cybercon.blackholes.us
26satos.rbl.cluecentral.net
25eli.blackholes.us
23rackspace.blackholes.us
23malaysia.blackholes.us
23covad.blackholes.us
23spam.exsilia.net (result 127.0.0.2 = spam source)
23ph.rbl.cluecentral.net
22thailand.blackholes.us
22no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
18blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
18bl.deadbeef.com
17t3direct.bl.reynolds.net.au
16yipes.blackholes.us
16blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
15blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
13spam.exsilia.net (result 127.0.0.3 = virus source)
12spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
12no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
9broadwing.blackholes.us
7olm.blackholes.us
7burst.blackholes.us
7dev.null.dk
6maxim.blackholes.us
6affinity.blackholes.us
5spamsources.yamta.org (result 127.0.0.2 = spam source)
5dnsbl.sorbs.net (result 127.0.0.5 = open relay)
4pajo.blackholes.us
4epoch.blackholes.us
4blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
4blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
3blackholes.uceb.org (result 127.0.0.4 = spam source network)
3no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
2navisite.blackholes.us
2infolink.blackholes.us
2owps.bl.reynolds.net.au
2spamsites.bl.reynolds.net.au
2dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
1valuenet.blackholes.us
1ciberlynx.blackholes.us
1dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
1omrs.bl.reynolds.net.au
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
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
15434(total number of IP addresses whose names were tested, including 378 at SDSC)
7095(union of all domain zones)
4677abuse.rfc-ignorant.org
3007rddn.bl.reynolds.net.au
1241whois.rfc-ignorant.org (union of all results)
684whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
608bulk.rhs.mailpolice.com
568endn.bl.reynolds.net.au
557whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
538spamdomains.blackholes.easynet.nl
338blackhole.securitysage.com
161bl.deadbeef.com
61porn.rhs.mailpolice.com
12postmaster.rfc-ignorant.org
11dsn.rfc-ignorant.org (zone not intended for this use)

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

HitsDNS Zone
9081(total number of domains tested, including 221 at SDSC)
3299(union of all domain zones)
1111bulk.rhs.mailpolice.com
998abuse.rfc-ignorant.org
874whois.rfc-ignorant.org (union of all results)
745endn.bl.reynolds.net.au
744blackhole.securitysage.com
728whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
478spamdomains.blackholes.easynet.nl
433postmaster.rfc-ignorant.org
380dsn.rfc-ignorant.org
156rddn.bl.reynolds.net.au (zone not intended for this use)
146whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
64bl.deadbeef.com
49porn.rhs.mailpolice.com
42ex.dnsbl.org (union of all results)
33ex.dnsbl.org (result 127.0.0.2 = spamsites)
9ex.dnsbl.org (result 127.0.0.3 = spam source)
1rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
1rhsbl.sorbs.net (union of all results)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 8 November 2003.