Blacklists Compared

20 August 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
41543(total number of IP addresses tested, including 395 at SDSC)
34908(union of most IP zones)
29853block.blars.org
23827t1.dnsbl.net.au
19126dnsbl.sorbs.net (union of all results)
16660sbl-xbl.spamhaus.org (union of all results)
15336xbl.spamhaus.org (union of all results)
14374sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
14364xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
14315cbl.abuseat.org
12264dnsbl.sorbs.net (result 127.0.0.10 = dialup)
11305cn-kr.blackholes.us (union of all results)
9380dynablock.njabl.org
8817no-more-funn.moensted.dk (union of all results)
8797rmst.dnsbl.net.au
8435unconfirmed.dsbl.org
8369list.dsbl.org
8368dsbl.dnsbl.net.au
8270blackholes.five-ten-sg.com (union of all results)
7882blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
7438cn-kr.blackholes.us (result 127.0.0.2 = China)
7438china.blackholes.us
7123sbl.csma.biz
5008combined-hib.dnsiplists.completewhois.com (union of all results)
5000combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
4887dnsbl.sorbs.net (result 127.0.0.6 = spam source)
4520blacklist.spambag.org
4482no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
3974korea.services.net
3867cn-kr.blackholes.us (result 127.0.0.3 = Korea)
3725bl.spamcop.net
3508bl.csma.biz
3353l2.spews.dnsbl.sorbs.net
3146dnsbl.njabl.org (union of all results)
2996dnsbl.ahbl.org (union of all results)
2837l1.spews.dnsbl.sorbs.net
2752spews.dnsbl.net.au
2404spamsources.fabel.dk
2331dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2288dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1990no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1957dnsbl.regedit64.net
1948wpbl.dnsbl.net.au
1850psbl.surriel.com
1840dnsbl.rangers.eu.org (union of all results)
1708no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1642dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
1529unsure.nether.net
1497dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1494opm.blitzed.org
1490xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1485sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1404sbl.spamhaus.org
1401sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1310xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1307sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1255bl.spamcannibal.org
1152comcast.blackholes.us
1031dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
910dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
871ricn.dnsbl.net.au
831spam.wytnij.to
756dnsbl.antispam.or.id
695dnsbl.ahbl.org (result 127.0.0.4 = spam source)
661korea.blackholes.us
576rr.blackholes.us
529dnsbl.njabl.org (result 127.0.0.3 = dialup)
439no-more-funn.moensted.dk (result 127.0.0.9 = misc)
410probes.dnsbl.net.au
378tr.countries.nerd.dk
312charter.blackholes.us
302taiwan.blackholes.us
211dnsbl.njabl.org (result 127.0.0.2 = open relay)
205no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
195japan.blackholes.us
195blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
186query.bondedsender.org (not a blacklist!)
173mail-abuse.blacklist.jippg.org
170blackholes.intersil.net
145qwest.blackholes.us
131dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
128relays.ordb.org
125blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
122dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
117dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
96thailand.blackholes.us
94cw.blackholes.us
93flowgoaway.com
87hongkong.blackholes.us
86level3.blackholes.us
82dnsbl.njabl.org (result 127.0.0.4 = spam source)
80cybercon.blackholes.us
80ohps.dnsbl.net.au
76internap.blackholes.us
70bellsouth.blackholes.us
70dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
70multihop.dsbl.org
64argentina.blackholes.us
61above.blackholes.us
43rogers.blackholes.us
41he.blackholes.us
39a2000.blackholes.us
35covad.blackholes.us
32osrs.dnsbl.net.au
31osps.dnsbl.net.au
31exemptions.ahbl.org (not a blacklist!)
30inflow.blackholes.us
30blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
26xo.blackholes.us
25malaysia.blackholes.us
23relays.nether.net
22infolink.blackholes.us
21yipes.blackholes.us
21blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
16rdts.dnsbl.net.au
16blackholes.uceb.org (union of all results)
14blackholes.brainerd.net
12rackspace.blackholes.us
11russia.blackholes.us
11dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
11dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
9singapore.blackholes.us
9dnsbl.sorbs.net (result 127.0.0.5 = open relay)
9hil.habeas.com
9blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
8turkey.blackholes.us
8broadwing.blackholes.us
8blackholes.uceb.org (result 127.0.0.2 = open relay)
8combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
6spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
6spamguard.leadmon.net (union of all results)
5blackholes.uceb.org (result 127.0.0.3 = spam source)
5blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
4olm.blackholes.us
4interbusiness.blackholes.us
4burst.blackholes.us
4owps.dnsbl.net.au
4dnsbl.ahbl.org (result 127.0.0.15 = open relay)
2telstra.blackholes.us
2eli.blackholes.us
2blackholes.uceb.org (result 127.0.0.6 = spam haven)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
2bl.deadbeef.com
1pajo.blackholes.us
1blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1omrs.dnsbl.net.au
1dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1dialup.blacklist.jippg.org (union of all results)

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
41543(total number of IP addresses whose names were tested, including 395 at SDSC)
18880(union of all domain zones)
14927abuse.rfc-ignorant.org
8716rddn.dnsbl.net.au
8424whois.rfc-ignorant.org (union of all results)
6590whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
4764dynamic.rhs.mailpolice.com
1859webmail.rhs.mailpolice.com
1836whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
770rhsbl.ahbl.org
499bl.deadbeef.com
399adv.rhs.mailpolice.com
318bulk.rhs.mailpolice.com
80postmaster.rfc-ignorant.org
27dsn.rfc-ignorant.org (zone not intended for this use)
23bogusmx.rfc-ignorant.org
7porn.rhs.mailpolice.com
1blackhole.securitysage.com

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

HitsDNS Zone
23596(total number of domains tested, including 334 at SDSC)
6710(union of all domain zones)
2577whois.rfc-ignorant.org (union of all results)
2224abuse.rfc-ignorant.org
2106whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1250postmaster.rfc-ignorant.org
1144webmail.rhs.mailpolice.com
1112rhsbl.ahbl.org
878dsn.rfc-ignorant.org
471whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
464bogusmx.rfc-ignorant.org
375bulk.rhs.mailpolice.com
206adv.rhs.mailpolice.com
171blackhole.securitysage.com
135bl.deadbeef.com
128porn.rhs.mailpolice.com
45rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
45rhsbl.sorbs.net (union of all results)
22rddn.dnsbl.net.au (zone not intended for this use)
16ex.dnsbl.org
7dynamic.rhs.mailpolice.com
3cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 31 August 2005.