Blacklists Compared

30 July 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, and because it is too aggressive to be widely useful the block.blars.org zone is also excluded.

HitsDNS Zone
47014(total number of IP addresses tested, including 437 at SDSC)
40103(union of most IP zones)
34423block.blars.org
25473t1.dnsbl.net.au
22478dnsbl.sorbs.net (union of all results)
15938sbl-xbl.spamhaus.org (union of all results)
14909dnsbl.sorbs.net (result 127.0.0.10 = dialup)
14335xbl.spamhaus.org (union of all results)
13581cbl.abuseat.org
13309sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
13287xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
12194cn-kr.blackholes.us (union of all results)
11401rmst.dnsbl.net.au
11214dynablock.njabl.org
10117no-more-funn.moensted.dk (union of all results)
9323blackholes.five-ten-sg.com (union of all results)
8855blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
8180unconfirmed.dsbl.org
8170cn-kr.blackholes.us (result 127.0.0.2 = China)
8170china.blackholes.us
8081dsbl.dnsbl.net.au
8081list.dsbl.org
7638combined-hib.dnsiplists.completewhois.com (union of all results)
6424sbl.csma.biz
5954combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
5544dnsbl.sorbs.net (result 127.0.0.6 = spam source)
5063no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5026blacklist.spambag.org
4314korea.services.net
4106bl.spamcop.net
4024cn-kr.blackholes.us (result 127.0.0.3 = Korea)
4024korea.blackholes.us
3931l2.spews.dnsbl.sorbs.net
3457dnsbl.njabl.org (union of all results)
3393l1.spews.dnsbl.sorbs.net
3374spews.dnsbl.net.au
3220bl.csma.biz
3125dnsbl.ahbl.org (union of all results)
2740spamsources.fabel.dk
2491dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2470dnsbl.rangers.eu.org (union of all results)
2281no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
2229dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2158dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
2138no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
2080dnsbl.regedit64.net
2066wpbl.dnsbl.net.au
1719combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
1701ricn.dnsbl.net.au
1696psbl.surriel.com
1658unsure.nether.net
1651sbl.spamhaus.org
1649sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1568brazil.blackholes.us
1545opm.blitzed.org
1528xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1528sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1491dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
1286dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1234xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1233sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1217bl.spamcannibal.org
1076dnsbl.antispam.or.id
1013dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
957taiwan.blackholes.us
921japan.blackholes.us
907spam.wytnij.to
886dnsbl.ahbl.org (result 127.0.0.4 = spam source)
705dnsbl.njabl.org (result 127.0.0.3 = dialup)
558pdl.blackholes.us
462no-more-funn.moensted.dk (result 127.0.0.9 = misc)
459probes.dnsbl.net.au
432hongkong.blackholes.us
418tr.countries.nerd.dk
375argentina.blackholes.us
337rr.blackholes.us
317comcast.blackholes.us
242blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
229dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
223mail-abuse.blacklist.jippg.org
200dnsbl.njabl.org (result 127.0.0.2 = open relay)
192no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
188cw.blackholes.us
183singapore.blackholes.us
180thailand.blackholes.us
169query.bondedsender.org (not a blacklist!)
164blackholes.intersil.net
142blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
137malaysia.blackholes.us
122verio.blackholes.us
118dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
116ohps.dnsbl.net.au
111level3.blackholes.us
109relays.ordb.org
98mci.blackholes.us
89russia.blackholes.us
88multihop.dsbl.org
83flowgoaway.com
77dnsbl.njabl.org (result 127.0.0.4 = spam source)
73qwest.blackholes.us
72rogers.blackholes.us
71dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
70he.blackholes.us
64internap.blackholes.us
60osps.dnsbl.net.au
59charter.blackholes.us
59above.blackholes.us
56xo.blackholes.us
47osrs.dnsbl.net.au
45dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
40wanadoo-fr.blackholes.us
37bellsouth.blackholes.us
37blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
36interbusiness.blackholes.us
32rdts.dnsbl.net.au
32exemptions.ahbl.org (not a blacklist!)
31blackholes.brainerd.net
30a2000.blackholes.us
29blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
28turkey.blackholes.us
22relays.nether.net
21cybercon.blackholes.us
20blackholes.uceb.org (union of all results)
18eli.blackholes.us
13broadwing.blackholes.us
13spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
13spamguard.leadmon.net (union of all results)
11dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
9telstra.blackholes.us
9affinity.blackholes.us
9blackholes.uceb.org (result 127.0.0.2 = open relay)
9dnsbl.sorbs.net (result 127.0.0.5 = open relay)
9dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
8covad.blackholes.us
8blackholes.uceb.org (result 127.0.0.3 = spam source)
8blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
7nigeria.blackholes.us
7epoch.blackholes.us
6pajo.blackholes.us
6navisite.blackholes.us
6infolink.blackholes.us
6inflow.blackholes.us
6hil.habeas.com
6blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
5rackspace.blackholes.us
5olm.blackholes.us
5burst.blackholes.us
4dnsbl.ahbl.org (result 127.0.0.15 = open relay)
3ciberlynx.blackholes.us
3blackholes.uceb.org (result 127.0.0.6 = spam haven)
3owps.dnsbl.net.au
3omrs.dnsbl.net.au
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
2blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
2bl.deadbeef.com
2dialup.blacklist.jippg.org (union of all results)
1yipes.blackholes.us
1swbell.blackholes.us
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1relays.bl.kundenserver.de
1dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
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)
1no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)

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
47014(total number of IP addresses whose names were tested, including 437 at SDSC)
22275(union of all domain zones)
17428abuse.rfc-ignorant.org
10799rddn.dnsbl.net.au
9126whois.rfc-ignorant.org (union of all results)
6225whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
5985dynamic.rhs.mailpolice.com
2905whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1545webmail.rhs.mailpolice.com
821bl.deadbeef.com
615rhsbl.ahbl.org
449bulk.rhs.mailpolice.com
379adv.rhs.mailpolice.com
98postmaster.rfc-ignorant.org
12dsn.rfc-ignorant.org (zone not intended for this use)
9bogusmx.rfc-ignorant.org
8porn.rhs.mailpolice.com
2blackhole.securitysage.com
2fraud.rhs.mailpolice.com

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

HitsDNS Zone
25053(total number of domains tested, including 383 at SDSC)
6617(union of all domain zones)
2720whois.rfc-ignorant.org (union of all results)
2141whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2121abuse.rfc-ignorant.org
1171postmaster.rfc-ignorant.org
1131webmail.rhs.mailpolice.com
891rhsbl.ahbl.org
781dsn.rfc-ignorant.org
579whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
441bogusmx.rfc-ignorant.org
431bulk.rhs.mailpolice.com
181adv.rhs.mailpolice.com
170blackhole.securitysage.com
160bl.deadbeef.com
113porn.rhs.mailpolice.com
43rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
43rhsbl.sorbs.net (union of all results)
40rddn.dnsbl.net.au (zone not intended for this use)
15ex.dnsbl.org
6dynamic.rhs.mailpolice.com
2fraud.rhs.mailpolice.com
2cart00ney.surriel.com

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