Blacklists Compared

23 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
32519(total number of IP addresses tested, including 430 at SDSC)
27583(union of most IP zones)
18888t1.dnsbl.net.au
17728blackholes.five-ten-sg.com (union of all results)
16940blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
14380sbl-xbl.spamhaus.org (union of all results)
13630dnsbl.sorbs.net (union of all results)
12676xbl.spamhaus.org (union of all results)
11730xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11729sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11705cbl.abuseat.org
9107dnsbl.sorbs.net (result 127.0.0.10 = dialup)
9105cn-kr.blackholes.us (union of all results)
8267unconfirmed.dsbl.org
8165list.dsbl.org
8162dsbl.dnsbl.net.au
8014no-more-funn.moensted.dk (union of all results)
7302rmst.dnsbl.net.au
6980dynablock.njabl.org
6301psbl.surriel.com
5550sbl.csma.biz
5245no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5127combined-hib.dnsiplists.completewhois.com (union of all results)
5113combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
4794cn-kr.blackholes.us (result 127.0.0.3 = Korea)
4794korea.blackholes.us
4783korea.services.net
4311cn-kr.blackholes.us (result 127.0.0.2 = China)
4311china.blackholes.us
4243bl.spamcop.net
3832dnsbl.njabl.org (union of all results)
3558l2.spews.dnsbl.sorbs.net
3407blacklist.spambag.org
3241bl.csma.biz
3148l1.spews.dnsbl.sorbs.net
3128dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3042spews.dnsbl.net.au
2969xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2969opm.blitzed.org
2963sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2919dnsbl.ahbl.org (union of all results)
2615wpbl.dnsbl.net.au
2409sbl.spamhaus.org
2402sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
2251spamsources.fabel.dk
2152dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
1987dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1885ricn.dnsbl.net.au
1821xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1817sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1722dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1699spam.wytnij.to
1540dnsbl.antispam.or.id
1501dnsbl.regedit64.net
1433dnsbl.rangers.eu.org (union of all results)
1361no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1293dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1269dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
1244dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1158pdl.blackholes.us
1081unsure.nether.net
999comcast.blackholes.us
996bl.spamcannibal.org
954brazil.blackholes.us
870dnsbl.ahbl.org (result 127.0.0.4 = spam source)
800no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
706probes.dnsbl.net.au
585japan.blackholes.us
488dnsbl.njabl.org (result 127.0.0.3 = dialup)
449no-more-funn.moensted.dk (result 127.0.0.9 = misc)
447blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
432russia.blackholes.us
427taiwan.blackholes.us
385mci.blackholes.us
284rr.blackholes.us
267cw.blackholes.us
264mexico.blackholes.us
258level3.blackholes.us
255argentina.blackholes.us
247blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
234charter.blackholes.us
228ybl.megacity.org
228mail-abuse.blacklist.jippg.org
207blackholes.intersil.net
174interbusiness.blackholes.us
174query.bondedsender.org (not a blacklist!)
173tr.countries.nerd.dk
170turkey.blackholes.us
169no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
152dnsbl.njabl.org (result 127.0.0.2 = source or relay)
145qwest.blackholes.us
145ohps.dnsbl.net.au
137thailand.blackholes.us
133hongkong.blackholes.us
122dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
116yipes.blackholes.us
115relays.ordb.org
114verio.blackholes.us
114singapore.blackholes.us
114internap.blackholes.us
103wanadoo-fr.blackholes.us
96xo.blackholes.us
93malaysia.blackholes.us
92dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
92multihop.dsbl.org
85flowgoaway.com
74osps.dnsbl.net.au
72dnsbl.njabl.org (result 127.0.0.4 = spam source)
69cybercon.blackholes.us
62bellsouth.blackholes.us
60dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
58above.blackholes.us
58dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
57dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
49rogers.blackholes.us
48he.blackholes.us
47lauderdale.blackholes.us
44blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
30a2000.blackholes.us
30osrs.dnsbl.net.au
29covad.blackholes.us
28inflow.blackholes.us
28relays.nether.net
28blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
26telstra.blackholes.us
25rdts.dnsbl.net.au
22exemptions.ahbl.org (not a blacklist!)
19eli.blackholes.us
18infolink.blackholes.us
15rackspace.blackholes.us
14dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
14combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
13dnsbl.sorbs.net (result 127.0.0.5 = open relay)
13blackholes.uceb.org (union of all results)
12blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
11burst.blackholes.us
10broadwing.blackholes.us
10affinity.blackholes.us
10blackholes.uceb.org (result 127.0.0.3 = spam source)
10blackholes.brainerd.net
9swbell.blackholes.us
9spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
9hil.habeas.com
9blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
9spamguard.leadmon.net (union of all results)
8nigeria.blackholes.us
8maxim.blackholes.us
7navisite.blackholes.us
6olm.blackholes.us
6epoch.blackholes.us
5owps.dnsbl.net.au
5dialup.blacklist.jippg.org (union of all results)
4dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
3pajo.blackholes.us
3blackholes.uceb.org (result 127.0.0.2 = open relay)
3omrs.dnsbl.net.au
3bl.deadbeef.com
3dnsbl.ahbl.org (result 127.0.0.15 = open relay)
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1ciberlynx.blackholes.us
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1dnsbl.ahbl.org (result 127.0.0.18 = virus source)
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
32519(total number of IP addresses whose names were tested, including 430 at SDSC)
14231(union of all domain zones)
10780abuse.rfc-ignorant.org
6215rddn.dnsbl.net.au
3699whois.rfc-ignorant.org (union of all results)
3165dynamic.rhs.mailpolice.com
2614whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1466webmail.rhs.mailpolice.com
1087whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
669rhsbl.ahbl.org
596bulk.rhs.mailpolice.com
349adv.rhs.mailpolice.com
264bl.deadbeef.com
20postmaster.rfc-ignorant.org
10dsn.rfc-ignorant.org (zone not intended for this use)
4blackhole.securitysage.com
3bogusmx.rfc-ignorant.org
3porn.rhs.mailpolice.com

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

HitsDNS Zone
23221(total number of domains tested, including 352 at SDSC)
6232(union of all domain zones)
2522whois.rfc-ignorant.org (union of all results)
2114whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1915abuse.rfc-ignorant.org
951webmail.rhs.mailpolice.com
891postmaster.rfc-ignorant.org
852rhsbl.ahbl.org
679dsn.rfc-ignorant.org
445bulk.rhs.mailpolice.com
408whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
310bogusmx.rfc-ignorant.org
213blackhole.securitysage.com
186adv.rhs.mailpolice.com
156bl.deadbeef.com
63porn.rhs.mailpolice.com
38rddn.dnsbl.net.au (zone not intended for this use)
34rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
34rhsbl.sorbs.net (union of all results)
16ex.dnsbl.org
13dynamic.rhs.mailpolice.com
3cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 3 May 2005.