Blacklists Compared

5 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
37199(total number of IP addresses tested, including 447 at SDSC)
31964(union of most IP zones)
26375t1.dnsbl.net.au
23001blackholes.five-ten-sg.com (union of all results)
22230blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
17776dnsbl.sorbs.net (union of all results)
14366sbl-xbl.spamhaus.org (union of all results)
13996cn-kr.blackholes.us (union of all results)
13759no-more-funn.moensted.dk (union of all results)
12974xbl.spamhaus.org (union of all results)
12521dnsbl.sorbs.net (result 127.0.0.10 = dialup)
12072xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
12072sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
12068cbl.abuseat.org
11117cn-kr.blackholes.us (result 127.0.0.3 = Korea)
11117korea.blackholes.us
11112korea.services.net
10927dynablock.njabl.org
10355no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
9798unconfirmed.dsbl.org
9705list.dsbl.org
9704dsbl.dnsbl.net.au
8877rmst.dnsbl.net.au
8553combined-hib.dnsiplists.completewhois.com (union of all results)
8534combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
6584sbl.csma.biz
6326ricn.dnsbl.net.au
6095psbl.surriel.com
4473dnsbl.njabl.org (union of all results)
4274bl.spamcop.net
4216bl.csma.biz
3567wpbl.dnsbl.net.au
3334dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3316blacklist.spambag.org
3291dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2879cn-kr.blackholes.us (result 127.0.0.2 = China)
2879china.blackholes.us
2859dnsbl.ahbl.org (union of all results)
2852xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2851sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2747opm.blitzed.org
2482l2.spews.dnsbl.sorbs.net
2399spamsources.fabel.dk
2185spews.dnsbl.net.au
2144spam.wytnij.to
2064l1.spews.dnsbl.sorbs.net
2015dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1938dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1906pdl.blackholes.us
1675no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1636sbl.spamhaus.org
1604sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1498dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1428dnsbl.regedit64.net
1221dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1132bl.spamcannibal.org
1086dnsbl.rangers.eu.org (union of all results)
1000brazil.blackholes.us
982dnsbl.njabl.org (result 127.0.0.3 = dialup)
980unsure.nether.net
955probes.dnsbl.net.au
950no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
870dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
856dnsbl.antispam.or.id
852dnsbl.ahbl.org (result 127.0.0.4 = spam source)
581japan.blackholes.us
575level3.blackholes.us
551no-more-funn.moensted.dk (result 127.0.0.9 = misc)
459ybl.megacity.org
456taiwan.blackholes.us
450blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
382comcast.blackholes.us
327charter.blackholes.us
313mail-abuse.blacklist.jippg.org
297mexico.blackholes.us
283cw.blackholes.us
279rr.blackholes.us
264blackholes.intersil.net
245no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
234blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
225qwest.blackholes.us
224russia.blackholes.us
187interbusiness.blackholes.us
182argentina.blackholes.us
180dialup.blacklist.jippg.org (union of all results)
178dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
177ohps.dnsbl.net.au
173hongkong.blackholes.us
171turkey.blackholes.us
165query.bondedsender.org (not a blacklist!)
163tr.countries.nerd.dk
142dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
137above.blackholes.us
135wanadoo-fr.blackholes.us
131verio.blackholes.us
124xo.blackholes.us
123dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
113flowgoaway.com
97dnsbl.njabl.org (result 127.0.0.2 = source or relay)
92internap.blackholes.us
91thailand.blackholes.us
90relays.ordb.org
86malaysia.blackholes.us
85singapore.blackholes.us
81dnsbl.njabl.org (result 127.0.0.4 = spam source)
81multihop.dsbl.org
76osps.dnsbl.net.au
73dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
67cybercon.blackholes.us
65dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
57bellsouth.blackholes.us
53covad.blackholes.us
45he.blackholes.us
45blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
45ph.rbl.cluecentral.net
44nigeria.blackholes.us
44epoch.blackholes.us
38blackholes.uceb.org (union of all results)
37relays.nether.net
37blackholes.brainerd.net
35osrs.dnsbl.net.au
32telstra.blackholes.us
29dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
28inflow.blackholes.us
28blackholes.uceb.org (result 127.0.0.3 = spam source)
26blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
24infolink.blackholes.us
24dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
23a2000.blackholes.us
23rdts.dnsbl.net.au
21yipes.blackholes.us
21rogers.blackholes.us
21rackspace.blackholes.us
19dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
19combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
18dnsbl.ahbl.org (result 127.0.0.15 = open relay)
18exemptions.ahbl.org (not a blacklist!)
17eli.blackholes.us
16maxim.blackholes.us
16affinity.blackholes.us
14burst.blackholes.us
13hil.habeas.com
12dnsbl.sorbs.net (result 127.0.0.5 = open relay)
12blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
11swbell.blackholes.us
10blackholes.uceb.org (result 127.0.0.2 = open relay)
10spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
10spamguard.leadmon.net (union of all results)
9satos.rbl.cluecentral.net
8broadwing.blackholes.us
7navisite.blackholes.us
6olm.blackholes.us
4pajo.blackholes.us
4blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
4bl.deadbeef.com
3media3.blackholes.us
3dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
2ciberlynx.blackholes.us
2owps.dnsbl.net.au
2omrs.dnsbl.net.au
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1relays.bl.kundenserver.de

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
37199(total number of IP addresses whose names were tested, including 447 at SDSC)
13522(union of all domain zones)
9531abuse.rfc-ignorant.org
6863rddn.dnsbl.net.au
3461whois.rfc-ignorant.org (union of all results)
3153dynamic.rhs.mailpolice.com
2436whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1437webmail.rhs.mailpolice.com
1026whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
776bulk.rhs.mailpolice.com
475rhsbl.ahbl.org
352adv.rhs.mailpolice.com
277bl.deadbeef.com
19dsn.rfc-ignorant.org (zone not intended for this use)
18postmaster.rfc-ignorant.org
13porn.rhs.mailpolice.com
6fraud.rhs.mailpolice.com
2blackhole.securitysage.com
1bogusmx.rfc-ignorant.org
1cart00ney.surriel.com

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

HitsDNS Zone
27791(total number of domains tested, including 332 at SDSC)
7902(union of all domain zones)
3022whois.rfc-ignorant.org (union of all results)
2610abuse.rfc-ignorant.org
2531whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1166postmaster.rfc-ignorant.org
1160webmail.rhs.mailpolice.com
1007dsn.rfc-ignorant.org
840rhsbl.ahbl.org
798bulk.rhs.mailpolice.com
491whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
365bogusmx.rfc-ignorant.org
245blackhole.securitysage.com
194bl.deadbeef.com
192adv.rhs.mailpolice.com
130rddn.dnsbl.net.au (zone not intended for this use)
108porn.rhs.mailpolice.com
78dynamic.rhs.mailpolice.com
61rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
61rhsbl.sorbs.net (union of all results)
16ex.dnsbl.org
4cart00ney.surriel.com
1fraud.rhs.mailpolice.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 18 February 2005.