Blacklists Compared

18 February 2006

[ 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
70698(total number of IP addresses tested, including 486 at SDSC)
63052(union of most IP zones)
44064block.blars.org
39428dnsbl.sorbs.net (union of all results)
38615t1.dnsbl.net.au
34021blackholes.five-ten-sg.com (union of all results)
33179sbl-xbl.spamhaus.org (union of all results)
33068blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
31843dnsbl.sorbs.net (result 127.0.0.10 = dialup)
31129xbl.spamhaus.org (union of all results)
29494cbl.abuseat.org
29492xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
29485sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
23022dynablock.njabl.org
22458psbl.surriel.com
17598no-more-funn.moensted.dk (union of all results)
13440cn-kr.blackholes.us (result 127.0.0.2 = China)
13440cn-kr.blackholes.us (union of all results)
13192sbl.csma.biz
11993unconfirmed.dsbl.org
11898list.dsbl.org
11893dsbl.dnsbl.net.au
10499blacklist.spambag.org
9701bl.spamcop.net
9130china.blackholes.us
8953no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
6006combined-hib.dnsiplists.completewhois.com (union of all results)
5999combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
5969bl.csma.biz
5677dnsbl.sorbs.net (result 127.0.0.6 = spam source)
5657l2.spews.dnsbl.sorbs.net
5401dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
5370unsure.nether.net
5069l1.spews.dnsbl.sorbs.net
5067spews.dnsbl.net.au
4630wpbl.dnsbl.net.au
4372dnsbl.njabl.org (union of all results)
4310korea.blackholes.us
4286korea.services.net
4223no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
3787rmst.dnsbl.net.au
3694no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
3170dnsbl.ahbl.org (union of all results)
3056dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2824ricn.dnsbl.net.au
2534spamsources.fabel.dk
2502sbl.spamhaus.org
2495sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
2494brazil.blackholes.us
2422dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1990xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1990sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1980sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1980opm.blitzed.org
1979xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1652russia.blackholes.us
1606japan.blackholes.us
1513spam.wytnij.to
1075dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1024bl.spamcannibal.org
1003dnsbl.antispam.or.id
1002dnsbl.njabl.org (result 127.0.0.3 = dialup)
986probes.dnsbl.net.au
903dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
880mail-abuse.blacklist.jippg.org
849taiwan.blackholes.us
846mexico.blackholes.us
826tr.countries.nerd.dk
823turkey.blackholes.us
725dnsbl.ahbl.org (result 127.0.0.4 = spam source)
561argentina.blackholes.us
427no-more-funn.moensted.dk (result 127.0.0.9 = misc)
407hongkong.blackholes.us
405blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
387malaysia.blackholes.us
377blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
340thailand.blackholes.us
305no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
211dnsbl.njabl.org (result 127.0.0.2 = open relay)
205singapore.blackholes.us
183query.bondedsender.org (not a blacklist!)
167blackholes.intersil.net
166relays.ordb.org
134ohps.dnsbl.net.au
121dnsbl.njabl.org (result 127.0.0.4 = spam source)
118blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
96dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
86flowgoaway.com
73multihop.dsbl.org
43dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
38osps.dnsbl.net.au
37blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
26rdts.dnsbl.net.au
20blackholes.uceb.org (union of all results)
19nigeria.blackholes.us
19osrs.dnsbl.net.au
17relays.nether.net
15hil.habeas.com
12dnsbl.ahbl.org (result 127.0.0.15 = open relay)
12dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
12exemptions.ahbl.org (not a blacklist!)
12tor.dnsbl.sectoor.de (union of all results)
11tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
10dnsbl.sorbs.net (result 127.0.0.5 = open relay)
10blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
8dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
7blackholes.uceb.org (result 127.0.0.6 = spam haven)
7combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
6blackholes.uceb.org (result 127.0.0.3 = spam source)
6blackholes.uceb.org (result 127.0.0.2 = open relay)
5blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
5spamguard.leadmon.net (union of all results)
4spamguard.leadmon.net (result 127.0.0.3 = spam source)
4blackholes.brainerd.net
2blackholes.uceb.org (result 127.0.0.5 = dialup)
2owps.dnsbl.net.au
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1spamsites.dnsbl.net.au
1spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
1relays.bl.kundenserver.de
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)
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
70698(total number of IP addresses whose names were tested, including 486 at SDSC)
39485(union of all domain zones)
26854abuse.rfc-ignorant.org
26465rddn.dnsbl.net.au
19291whois.rfc-ignorant.org (union of all results)
15608whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
10852dynamic.rhs.mailpolice.com
3683whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2260webmail.rhs.mailpolice.com
872rhsbl.ahbl.org
501bl.deadbeef.com
495adv.rhs.mailpolice.com
293postmaster.rfc-ignorant.org
243bulk.rhs.mailpolice.com
121bogusmx.rfc-ignorant.org
118dsn.rfc-ignorant.org (zone not intended for this use)
1cart00ney.surriel.com

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

HitsDNS Zone
31373(total number of domains tested, including 396 at SDSC)
7060(union of all domain zones)
2319whois.rfc-ignorant.org (union of all results)
2237abuse.rfc-ignorant.org
1825whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1186rhsbl.ahbl.org
1123postmaster.rfc-ignorant.org
975webmail.rhs.mailpolice.com
866bogusmx.rfc-ignorant.org
760dsn.rfc-ignorant.org
494whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
243bulk.rhs.mailpolice.com
199adv.rhs.mailpolice.com
143bl.deadbeef.com
119porn.rhs.mailpolice.com
103blackhole.securitysage.com
44rddn.dnsbl.net.au (zone not intended for this use)
33rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
33rhsbl.sorbs.net (union of all results)
16dynamic.rhs.mailpolice.com
13ex.dnsbl.org
3cart00ney.surriel.com
1fraud.rhs.mailpolice.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 6 March 2006.