Blacklists Compared

19 February 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
38791(total number of IP addresses tested, including 444 at SDSC)
33504(union of most IP zones)
27012t1.dnsbl.net.au
24133blackholes.five-ten-sg.com (union of all results)
23346blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
18334dnsbl.sorbs.net (union of all results)
14586cn-kr.blackholes.us (union of all results)
13892no-more-funn.moensted.dk (union of all results)
13536sbl-xbl.spamhaus.org (union of all results)
12880dnsbl.sorbs.net (result 127.0.0.10 = dialup)
12272xbl.spamhaus.org (union of all results)
11253cbl.abuseat.org
11251cn-kr.blackholes.us (result 127.0.0.3 = Korea)
11250korea.blackholes.us
11239korea.services.net
11230xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11225sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
10824dynablock.njabl.org
10533no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
9936unconfirmed.dsbl.org
9849list.dsbl.org
9848dsbl.dnsbl.net.au
8220combined-hib.dnsiplists.completewhois.com (union of all results)
8173combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
8008rmst.dnsbl.net.au
6783sbl.csma.biz
5775ricn.dnsbl.net.au
5132dnsbl.njabl.org (union of all results)
5063psbl.surriel.com
4145bl.csma.biz
4114dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3624bl.spamcop.net
3573dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
3461wpbl.dnsbl.net.au
3335cn-kr.blackholes.us (result 127.0.0.2 = China)
3335china.blackholes.us
2969sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2968xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2966blacklist.spambag.org
2915dnsbl.ahbl.org (union of all results)
2876opm.blitzed.org
2608l2.spews.dnsbl.sorbs.net
2326spews.dnsbl.net.au
2322dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2226spam.wytnij.to
2226l1.spews.dnsbl.sorbs.net
1990dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1981pdl.blackholes.us
1788dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1653sbl.spamhaus.org
1652dnsbl.regedit64.net
1651sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1563no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1516dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1220spamsources.fabel.dk
1199dnsbl.rangers.eu.org (union of all results)
1141no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1127brazil.blackholes.us
1061bl.spamcannibal.org
1053unsure.nether.net
1023dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
867dnsbl.njabl.org (result 127.0.0.3 = dialup)
733dnsbl.antispam.or.id
620japan.blackholes.us
578level3.blackholes.us
533dnsbl.ahbl.org (result 127.0.0.4 = spam source)
522probes.dnsbl.net.au
478ybl.megacity.org
457no-more-funn.moensted.dk (result 127.0.0.9 = misc)
430blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
414comcast.blackholes.us
374taiwan.blackholes.us
347mexico.blackholes.us
286charter.blackholes.us
278mail-abuse.blacklist.jippg.org
272rr.blackholes.us
270argentina.blackholes.us
262cw.blackholes.us
258blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
235blackholes.intersil.net
226ohps.dnsbl.net.au
214interbusiness.blackholes.us
209no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
200turkey.blackholes.us
200tr.countries.nerd.dk
196russia.blackholes.us
196hongkong.blackholes.us
183qwest.blackholes.us
164query.bondedsender.org (not a blacklist!)
162dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
143above.blackholes.us
133wanadoo-fr.blackholes.us
128flowgoaway.com
116verio.blackholes.us
115thailand.blackholes.us
100dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
99internap.blackholes.us
98xo.blackholes.us
93osps.dnsbl.net.au
92singapore.blackholes.us
91dnsbl.njabl.org (result 127.0.0.4 = spam source)
89malaysia.blackholes.us
76dnsbl.njabl.org (result 127.0.0.2 = source or relay)
71relays.ordb.org
70cybercon.blackholes.us
69multihop.dsbl.org
62nigeria.blackholes.us
59bellsouth.blackholes.us
59blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
59dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
57dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
47combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
45he.blackholes.us
42ph.rbl.cluecentral.net
40covad.blackholes.us
36relays.nether.net
36dialup.blacklist.jippg.org (union of all results)
34inflow.blackholes.us
34dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
29rdts.dnsbl.net.au
27osrs.dnsbl.net.au
27dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
25telstra.blackholes.us
25rogers.blackholes.us
24blackholes.uceb.org (union of all results)
22blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
22dnsbl.ahbl.org (result 127.0.0.15 = open relay)
21spamguard.leadmon.net (union of all results)
20rackspace.blackholes.us
20infolink.blackholes.us
19spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
18a2000.blackholes.us
17burst.blackholes.us
17blackholes.uceb.org (result 127.0.0.3 = spam source)
17dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
16eli.blackholes.us
16exemptions.ahbl.org (not a blacklist!)
15yipes.blackholes.us
15dnsbl.sorbs.net (result 127.0.0.5 = open relay)
14affinity.blackholes.us
11hil.habeas.com
11blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
9swbell.blackholes.us
9maxim.blackholes.us
9epoch.blackholes.us
9blackholes.brainerd.net
8olm.blackholes.us
7pajo.blackholes.us
6blackholes.uceb.org (result 127.0.0.2 = open relay)
6dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
6blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
6satos.rbl.cluecentral.net
5navisite.blackholes.us
5owps.dnsbl.net.au
4broadwing.blackholes.us
4bl.deadbeef.com
3no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
2dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
2omrs.dnsbl.net.au
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
2work.drbl.croco.net
2dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
1valuenet.blackholes.us
1ciberlynx.blackholes.us
1blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)

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
38791(total number of IP addresses whose names were tested, including 444 at SDSC)
14414(union of all domain zones)
10381abuse.rfc-ignorant.org
7365rddn.dnsbl.net.au
3871whois.rfc-ignorant.org (union of all results)
3401dynamic.rhs.mailpolice.com
2704whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1530webmail.rhs.mailpolice.com
1169whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
632bulk.rhs.mailpolice.com
443rhsbl.ahbl.org
384adv.rhs.mailpolice.com
214bl.deadbeef.com
24dsn.rfc-ignorant.org (zone not intended for this use)
23postmaster.rfc-ignorant.org
6porn.rhs.mailpolice.com
2bogusmx.rfc-ignorant.org
1blackhole.securitysage.com

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

HitsDNS Zone
23607(total number of domains tested, including 310 at SDSC)
6553(union of all domain zones)
2371whois.rfc-ignorant.org (union of all results)
2137abuse.rfc-ignorant.org
1967whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1127webmail.rhs.mailpolice.com
973postmaster.rfc-ignorant.org
882dsn.rfc-ignorant.org
758bulk.rhs.mailpolice.com
715rhsbl.ahbl.org
404whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
266bogusmx.rfc-ignorant.org
221blackhole.securitysage.com
189adv.rhs.mailpolice.com
164bl.deadbeef.com
100porn.rhs.mailpolice.com
68rddn.dnsbl.net.au (zone not intended for this use)
52rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
52rhsbl.sorbs.net (union of all results)
36dynamic.rhs.mailpolice.com
13ex.dnsbl.org

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 6 March 2005.