Blacklists Compared

2 April 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
33331(total number of IP addresses tested, including 425 at SDSC)
28266(union of most IP zones)
18906t1.dnsbl.net.au
18531blackholes.five-ten-sg.com (union of all results)
17760blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
14027dnsbl.sorbs.net (union of all results)
13620sbl-xbl.spamhaus.org (union of all results)
11973xbl.spamhaus.org (union of all results)
11233xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11230sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11206cbl.abuseat.org
10010cn-kr.blackholes.us (union of all results)
9623dnsbl.sorbs.net (result 127.0.0.10 = dialup)
9333no-more-funn.moensted.dk (union of all results)
7712rmst.dnsbl.net.au
7682dynablock.njabl.org
7493unconfirmed.dsbl.org
7398list.dsbl.org
7397dsbl.dnsbl.net.au
6357no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
6287psbl.surriel.com
6274cn-kr.blackholes.us (result 127.0.0.3 = Korea)
6274korea.blackholes.us
6269korea.services.net
5731combined-hib.dnsiplists.completewhois.com (union of all results)
5709combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
5612sbl.csma.biz
4090bl.spamcop.net
3736cn-kr.blackholes.us (result 127.0.0.2 = China)
3736china.blackholes.us
3578dnsbl.njabl.org (union of all results)
3524blacklist.spambag.org
3342l2.spews.dnsbl.sorbs.net
3185bl.csma.biz
2869dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2846l1.spews.dnsbl.sorbs.net
2832spews.dnsbl.net.au
2677wpbl.dnsbl.net.au
2663dnsbl.ahbl.org (union of all results)
2634opm.blitzed.org
2617xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2617sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2390sbl.spamhaus.org
2384sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
2345ricn.dnsbl.net.au
2241dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2103spamsources.fabel.dk
1899dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1814dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1773spam.wytnij.to
1658dnsbl.regedit64.net
1329no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1310dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1308dnsbl.antispam.or.id
1274dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1108dnsbl.rangers.eu.org (union of all results)
1078no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1043pdl.blackholes.us
1009bl.spamcannibal.org
960dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
948unsure.nether.net
905brazil.blackholes.us
803probes.dnsbl.net.au
800comcast.blackholes.us
754japan.blackholes.us
729dnsbl.ahbl.org (result 127.0.0.4 = spam source)
562dnsbl.njabl.org (result 127.0.0.3 = dialup)
466blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
445ybl.megacity.org
383mci.blackholes.us
370level3.blackholes.us
370no-more-funn.moensted.dk (result 127.0.0.9 = misc)
354russia.blackholes.us
354rr.blackholes.us
349taiwan.blackholes.us
281cw.blackholes.us
261charter.blackholes.us
256mexico.blackholes.us
246argentina.blackholes.us
246tr.countries.nerd.dk
243turkey.blackholes.us
229blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
213no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
188mail-abuse.blacklist.jippg.org
178blackholes.intersil.net
175hongkong.blackholes.us
165query.bondedsender.org (not a blacklist!)
160singapore.blackholes.us
160ohps.dnsbl.net.au
151verio.blackholes.us
144qwest.blackholes.us
140interbusiness.blackholes.us
126dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
124above.blackholes.us
122thailand.blackholes.us
108internap.blackholes.us
99wanadoo-fr.blackholes.us
92malaysia.blackholes.us
88dnsbl.njabl.org (result 127.0.0.4 = spam source)
85multihop.dsbl.org
82xo.blackholes.us
82flowgoaway.com
75osps.dnsbl.net.au
73dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
72dnsbl.njabl.org (result 127.0.0.2 = source or relay)
65cybercon.blackholes.us
61relays.ordb.org
60dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
44a2000.blackholes.us
40bellsouth.blackholes.us
39rogers.blackholes.us
39ph.rbl.cluecentral.net
37he.blackholes.us
35yipes.blackholes.us
33dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
31covad.blackholes.us
30inflow.blackholes.us
29telstra.blackholes.us
28blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
27blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
25relays.nether.net
24nigeria.blackholes.us
24lauderdale.blackholes.us
23infolink.blackholes.us
23eli.blackholes.us
22osrs.dnsbl.net.au
22combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
21blackholes.uceb.org (union of all results)
18exemptions.ahbl.org (not a blacklist!)
16blackholes.uceb.org (result 127.0.0.3 = spam source)
16rdts.dnsbl.net.au
16dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
15rackspace.blackholes.us
14dialup.blacklist.jippg.org (union of all results)
13dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
13hil.habeas.com
13blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
12dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
11burst.blackholes.us
11dnsbl.sorbs.net (result 127.0.0.5 = open relay)
10epoch.blackholes.us
9navisite.blackholes.us
9affinity.blackholes.us
9spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
9spamguard.leadmon.net (union of all results)
8olm.blackholes.us
8owps.dnsbl.net.au
7broadwing.blackholes.us
7satos.rbl.cluecentral.net
7dnsbl.ahbl.org (result 127.0.0.15 = open relay)
6swbell.blackholes.us
6blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
6bl.deadbeef.com
5pajo.blackholes.us
5maxim.blackholes.us
5blackholes.brainerd.net
4blackholes.uceb.org (result 127.0.0.2 = open relay)
4dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
3ciberlynx.blackholes.us
2dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
2no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
1dnsbl.ahbl.org (result 127.0.0.18 = virus source)
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)

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
33331(total number of IP addresses whose names were tested, including 425 at SDSC)
13871(union of all domain zones)
10611abuse.rfc-ignorant.org
5902rddn.dnsbl.net.au
3510whois.rfc-ignorant.org (union of all results)
2970dynamic.rhs.mailpolice.com
2522whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1620webmail.rhs.mailpolice.com
990whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
807rhsbl.ahbl.org
576bulk.rhs.mailpolice.com
328adv.rhs.mailpolice.com
166bl.deadbeef.com
21postmaster.rfc-ignorant.org
16dsn.rfc-ignorant.org (zone not intended for this use)
9blackhole.securitysage.com
6porn.rhs.mailpolice.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
21212(total number of domains tested, including 334 at SDSC)
5794(union of all domain zones)
2117whois.rfc-ignorant.org (union of all results)
1836abuse.rfc-ignorant.org
1716whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
863postmaster.rfc-ignorant.org
845webmail.rhs.mailpolice.com
824rhsbl.ahbl.org
686dsn.rfc-ignorant.org
579bulk.rhs.mailpolice.com
401whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
295blackhole.securitysage.com
246bogusmx.rfc-ignorant.org
181adv.rhs.mailpolice.com
115porn.rhs.mailpolice.com
115bl.deadbeef.com
54rddn.dnsbl.net.au (zone not intended for this use)
41rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
41rhsbl.sorbs.net (union of all results)
24dynamic.rhs.mailpolice.com
18ex.dnsbl.org
3cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 13 April 2005.