Blacklists Compared

23 October 2004

[ 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
32181(total number of IP addresses tested, including 569 at SDSC)
26805(union of most IP zones)
20772t1.dnsbl.net.au
18227blackholes.five-ten-sg.com (union of all results)
17479blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
13950dnsbl.sorbs.net (union of all results)
12716sbl-xbl.spamhaus.org (union of all results)
11529xbl.spamhaus.org (union of all results)
11496cbl.abuseat.org
11469xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11468sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
9335unconfirmed.dsbl.org
9286list.dsbl.org
9285dsbl.dnsbl.net.au
9255dnsbl.sorbs.net (result 127.0.0.10 = dialup)
9217no-more-funn.moensted.dk (union of all results)
9024dynablock.njabl.org
8458cn-kr.blackholes.us (union of all results)
5885sbl.csma.biz
5803cn-kr.blackholes.us (result 127.0.0.3 = Korea)
5803korea.blackholes.us
5794korea.services.net
5518no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5199psbl.surriel.com
5130rmst.dnsbl.net.au
4291bl.spamcop.net
4179dnsbl.njabl.org (union of all results)
3912blacklist.spambag.org
3437bl.csma.biz
2978l2.spews.dnsbl.sorbs.net
2949wpbl.dnsbl.net.au
2832dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2655cn-kr.blackholes.us (result 127.0.0.2 = China)
2655china.blackholes.us
2620spews.dnsbl.net.au
2596l1.spews.dnsbl.sorbs.net
2475dnsbl.ahbl.org (union of all results)
2350block.blars.org
2059spamsources.fabel.dk
2036dnsbl.sorbs.net (result 127.0.0.6 = spam source)
2009dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
1956ricn.dnsbl.net.au
1927no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1798pdl.blackholes.us
1537dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1379spam.wytnij.to
1371sbl.spamhaus.org
1370sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1224dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1195unsure.nether.net
1105dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1084dnsbl.antispam.or.id
1051dnsbl.njabl.org (result 127.0.0.3 = dialup)
1016work.drbl.croco.net
950brazil.blackholes.us
875no-more-funn.moensted.dk (result 127.0.0.9 = misc)
862dnsbl.rangers.eu.org (union of all results)
822bl.spamcannibal.org
805dnsbl.ahbl.org (result 127.0.0.4 = spam source)
761japan.blackholes.us
747level3.blackholes.us
729xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
729sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
727opm.blitzed.org
693no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
619probes.dnsbl.net.au
603dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
602spamguard.leadmon.net (union of all results)
590taiwan.blackholes.us
554comcast.blackholes.us
534spamguard.leadmon.net (result 127.0.0.2 = dialup)
475ybl.megacity.org
451blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
404charter.blackholes.us
327rr.blackholes.us
316cw.blackholes.us
275mexico.blackholes.us
236no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
220blackholes.intersil.net
211russia.blackholes.us
207hongkong.blackholes.us
204qwest.blackholes.us
204blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
187interbusiness.blackholes.us
179dnsbl.njabl.org (result 127.0.0.2 = source or relay)
170dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
163argentina.blackholes.us
151ohps.dnsbl.net.au
146verio.blackholes.us
139wanadoo-fr.blackholes.us
137singapore.blackholes.us
136query.bondedsender.org (not a blacklist!)
134dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
133relaywatcher.n13mbl.com
130dnsbl.njabl.org (result 127.0.0.4 = spam source)
129dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
126flowgoaway.com
119tr.countries.nerd.dk
118turkey.blackholes.us
109osps.dnsbl.net.au
105xo.blackholes.us
92malaysia.blackholes.us
86multihop.dsbl.org
84internap.blackholes.us
81thailand.blackholes.us
79relays.ordb.org
77above.blackholes.us
76dialup.blacklist.jippg.org (union of all results)
75infolink.blackholes.us
74dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
67spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
66dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
58osrs.dnsbl.net.au
57telstra.blackholes.us
54cybercon.blackholes.us
52relays.nether.net
48bellsouth.blackholes.us
47mail-abuse.blacklist.jippg.org
44dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
41he.blackholes.us
40inflow.blackholes.us
39ph.rbl.cluecentral.net
38blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
36swbell.blackholes.us
36nigeria.blackholes.us
35rogers.blackholes.us
32covad.blackholes.us
32blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
29broadwing.blackholes.us
27blackholes.brainerd.net
23yipes.blackholes.us
23eli.blackholes.us
23rdts.dnsbl.net.au
21dnsbl.sorbs.net (result 127.0.0.5 = open relay)
21dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
21blackholes.uceb.org (union of all results)
20rackspace.blackholes.us
19maxim.blackholes.us
18exemptions.ahbl.org (not a blacklist!)
17a2000.blackholes.us
16hil.habeas.com
16blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
15affinity.blackholes.us
13blackholes.uceb.org (result 127.0.0.3 = spam source)
12relays.bl.kundenserver.de
11epoch.blackholes.us
10olm.blackholes.us
9satos.rbl.cluecentral.net
9dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
8dnsbl.ahbl.org (result 127.0.0.15 = open relay)
7bl.deadbeef.com
6burst.blackholes.us
5blackholes.uceb.org (result 127.0.0.2 = open relay)
5blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
4navisite.blackholes.us
4owps.dnsbl.net.au
3ciberlynx.blackholes.us
3relays.visi.com
2pajo.blackholes.us
2blackholes.uceb.org (result 127.0.0.6 = spam haven)
2dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
2no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
1omrs.dnsbl.net.au
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1no-more-funn.moensted.dk (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
32181(total number of IP addresses whose names were tested, including 569 at SDSC)
13254(union of all domain zones)
10337abuse.rfc-ignorant.org
7340rddn.dnsbl.net.au
3683whois.rfc-ignorant.org (union of all results)
2801whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
882whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
648bulk.rhs.mailpolice.com
626rhsbl.ahbl.org
328bl.deadbeef.com
24postmaster.rfc-ignorant.org
22porn.rhs.mailpolice.com
18dsn.rfc-ignorant.org (zone not intended for this use)
4bogusmx.rfc-ignorant.org
3blackhole.securitysage.com
1cart00ney.surriel.com

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

HitsDNS Zone
27898(total number of domains tested, including 469 at SDSC)
8067(union of all domain zones)
3576whois.rfc-ignorant.org (union of all results)
3122whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2550abuse.rfc-ignorant.org
1084bulk.rhs.mailpolice.com
1075postmaster.rfc-ignorant.org
907rhsbl.ahbl.org
772dsn.rfc-ignorant.org
454whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
342bogusmx.rfc-ignorant.org
327blackhole.securitysage.com
239bl.deadbeef.com
75porn.rhs.mailpolice.com
59rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
59rhsbl.sorbs.net (union of all results)
58rddn.dnsbl.net.au (zone not intended for this use)
17ex.dnsbl.org
3cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 3 November 2004.