Blacklists Compared

11 June 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
35610(total number of IP addresses tested, including 401 at SDSC)
30346(union of most IP zones)
20513t1.dnsbl.net.au
15493sbl-xbl.spamhaus.org (union of all results)
15027dnsbl.sorbs.net (union of all results)
14046xbl.spamhaus.org (union of all results)
13176sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
13129xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11838cbl.abuseat.org
10360dnsbl.sorbs.net (result 127.0.0.10 = dialup)
10007cn-kr.blackholes.us (union of all results)
9027rmst.dnsbl.net.au
8147dynablock.njabl.org
8066list.dsbl.org
8065dsbl.dnsbl.net.au
8046unconfirmed.dsbl.org
7911no-more-funn.moensted.dk (union of all results)
7267blackholes.five-ten-sg.com (union of all results)
6892blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
6845psbl.surriel.com
5953sbl.csma.biz
5236cn-kr.blackholes.us (result 127.0.0.3 = Korea)
5236korea.blackholes.us
5192korea.services.net
4804combined-hib.dnsiplists.completewhois.com (union of all results)
4791combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
4771cn-kr.blackholes.us (result 127.0.0.2 = China)
4771china.blackholes.us
4719no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
3854bl.spamcop.net
3533blacklist.spambag.org
3364bl.csma.biz
3224dnsbl.njabl.org (union of all results)
3184dnsbl.ahbl.org (union of all results)
2823l2.spews.dnsbl.sorbs.net
2742dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2551dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2453dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2443l1.spews.dnsbl.sorbs.net
2330spamsources.fabel.dk
2249wpbl.dnsbl.net.au
2244spews.dnsbl.net.au
2000sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1996xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1970opm.blitzed.org
1707dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1652dnsbl.rangers.eu.org (union of all results)
1602sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1588sbl.spamhaus.org
1580xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1579sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1534dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1391no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1354dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
1294pdl.blackholes.us
1201no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1115brazil.blackholes.us
1078unsure.nether.net
1020bl.spamcannibal.org
1000dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
986ricn.dnsbl.net.au
904spam.wytnij.to
896dnsbl.antispam.or.id
783taiwan.blackholes.us
777comcast.blackholes.us
755japan.blackholes.us
551probes.dnsbl.net.au
548hongkong.blackholes.us
477rr.blackholes.us
463no-more-funn.moensted.dk (result 127.0.0.9 = misc)
432dnsbl.njabl.org (result 127.0.0.3 = dialup)
431dnsbl.ahbl.org (result 127.0.0.4 = spam source)
401mci.blackholes.us
367russia.blackholes.us
336argentina.blackholes.us
287dnsbl.regedit64.net
280mexico.blackholes.us
274charter.blackholes.us
236cw.blackholes.us
221blackholes.intersil.net
215interbusiness.blackholes.us
204blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
203mail-abuse.blacklist.jippg.org
193query.bondedsender.org (not a blacklist!)
191dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
188ybl.megacity.org
186tr.countries.nerd.dk
183turkey.blackholes.us
173dnsbl.njabl.org (result 127.0.0.2 = open relay)
164level3.blackholes.us
162qwest.blackholes.us
154no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
143singapore.blackholes.us
139thailand.blackholes.us
124internap.blackholes.us
117ohps.dnsbl.net.au
113blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
111malaysia.blackholes.us
104relays.ordb.org
102verio.blackholes.us
94dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
91flowgoaway.com
88dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
83cybercon.blackholes.us
78wanadoo-fr.blackholes.us
76dnsbl.njabl.org (result 127.0.0.4 = spam source)
75xo.blackholes.us
65bellsouth.blackholes.us
63above.blackholes.us
59osps.dnsbl.net.au
52multihop.dsbl.org
46covad.blackholes.us
46broadwing.blackholes.us
45telstra.blackholes.us
44lauderdale.blackholes.us
42he.blackholes.us
37dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
35a2000.blackholes.us
35exemptions.ahbl.org (not a blacklist!)
34rogers.blackholes.us
33osrs.dnsbl.net.au
29inflow.blackholes.us
29relays.nether.net
23blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
22blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
21eli.blackholes.us
20infolink.blackholes.us
19yipes.blackholes.us
17dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
16epoch.blackholes.us
16rdts.dnsbl.net.au
14spamguard.leadmon.net (union of all results)
13rackspace.blackholes.us
13combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
12spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
12blackholes.uceb.org (union of all results)
10blackholes.uceb.org (result 127.0.0.3 = spam source)
10dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
9nigeria.blackholes.us
8burst.blackholes.us
8affinity.blackholes.us
8dnsbl.sorbs.net (result 127.0.0.5 = open relay)
8blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
8blackholes.brainerd.net
7olm.blackholes.us
7maxim.blackholes.us
6swbell.blackholes.us
5dialup.blacklist.jippg.org (union of all results)
4dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
4blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
4dnsbl.ahbl.org (result 127.0.0.15 = open relay)
3navisite.blackholes.us
2media3.blackholes.us
2blackholes.uceb.org (result 127.0.0.2 = open relay)
2dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
2owps.dnsbl.net.au
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2bl.deadbeef.com
1pajo.blackholes.us
1ciberlynx.blackholes.us
1omrs.dnsbl.net.au
1owfs.dnsbl.net.au
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
1hil.habeas.com
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
35610(total number of IP addresses whose names were tested, including 401 at SDSC)
16029(union of all domain zones)
12555abuse.rfc-ignorant.org
7242rddn.dnsbl.net.au
7127whois.rfc-ignorant.org (union of all results)
5733whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
4255dynamic.rhs.mailpolice.com
1451webmail.rhs.mailpolice.com
1396whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
807rhsbl.ahbl.org
548bl.deadbeef.com
540bulk.rhs.mailpolice.com
349adv.rhs.mailpolice.com
33postmaster.rfc-ignorant.org
23dsn.rfc-ignorant.org (zone not intended for this use)
4bogusmx.rfc-ignorant.org
3blackhole.securitysage.com
2porn.rhs.mailpolice.com

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

HitsDNS Zone
24425(total number of domains tested, including 344 at SDSC)
6607(union of all domain zones)
2407whois.rfc-ignorant.org (union of all results)
2227abuse.rfc-ignorant.org
1873whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1236webmail.rhs.mailpolice.com
1173postmaster.rfc-ignorant.org
958dsn.rfc-ignorant.org
909rhsbl.ahbl.org
534whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
510bogusmx.rfc-ignorant.org
422bulk.rhs.mailpolice.com
185blackhole.securitysage.com
182adv.rhs.mailpolice.com
136bl.deadbeef.com
81porn.rhs.mailpolice.com
48rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
48rhsbl.sorbs.net (union of all results)
42rddn.dnsbl.net.au (zone not intended for this use)
22dynamic.rhs.mailpolice.com
12ex.dnsbl.org
2fraud.rhs.mailpolice.com
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 21 June 2005.