Blacklists Compared

18 December 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
34252(total number of IP addresses tested, including 439 at SDSC)
28935(union of most IP zones)
23423t1.dnsbl.net.au
20261blackholes.five-ten-sg.com (union of all results)
19434blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
16203dnsbl.sorbs.net (union of all results)
11688sbl-xbl.spamhaus.org (union of all results)
10714unconfirmed.dsbl.org
10621dnsbl.sorbs.net (result 127.0.0.10 = dialup)
10611list.dsbl.org
10608dsbl.dnsbl.net.au
10451xbl.spamhaus.org (union of all results)
10426cn-kr.blackholes.us (union of all results)
10341xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
10338no-more-funn.moensted.dk (union of all results)
10336sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
10124cbl.abuseat.org
8843dynablock.njabl.org
7648cn-kr.blackholes.us (result 127.0.0.3 = Korea)
7648korea.blackholes.us
7644korea.services.net
7456sbl.csma.biz
6793rmst.dnsbl.net.au
6639no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5919combined-hib.dnsiplists.completewhois.com (union of all results)
5895combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
5705psbl.surriel.com
4759bl.csma.biz
4354dnsbl.njabl.org (union of all results)
3979blacklist.spambag.org
3924bl.spamcop.net
3070dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
3023wpbl.dnsbl.net.au
2955dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2911dnsbl.ahbl.org (union of all results)
2778cn-kr.blackholes.us (result 127.0.0.2 = China)
2778china.blackholes.us
2586l2.spews.dnsbl.sorbs.net
2509block.blars.org
2483spamsources.fabel.dk
2296ricn.dnsbl.net.au
2253spews.dnsbl.net.au
2119l1.spews.dnsbl.sorbs.net
2116dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1936dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1771pdl.blackholes.us
1745no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1565dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1424sbl.spamhaus.org
1402sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1278dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1201spam.wytnij.to
1195unsure.nether.net
1030dnsbl.njabl.org (result 127.0.0.3 = dialup)
1016probes.dnsbl.net.au
997dnsbl.rangers.eu.org (union of all results)
978work.drbl.croco.net
972brazil.blackholes.us
965no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
962bl.spamcannibal.org
918dnsbl.ahbl.org (result 127.0.0.4 = spam source)
839dnsbl.antispam.or.id
782dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
738no-more-funn.moensted.dk (result 127.0.0.9 = misc)
625japan.blackholes.us
594level3.blackholes.us
550opm.blitzed.org
547xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
544sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
497ybl.megacity.org
482blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
467taiwan.blackholes.us
319cw.blackholes.us
318mexico.blackholes.us
290rr.blackholes.us
277comcast.blackholes.us
268no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
264charter.blackholes.us
245argentina.blackholes.us
244qwest.blackholes.us
240blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
232blackholes.intersil.net
220interbusiness.blackholes.us
218hongkong.blackholes.us
205dnsbl.njabl.org (result 127.0.0.4 = spam source)
204russia.blackholes.us
185dnsbl.njabl.org (result 127.0.0.2 = source or relay)
175above.blackholes.us
155query.bondedsender.org (not a blacklist!)
146wanadoo-fr.blackholes.us
145tr.countries.nerd.dk
138xo.blackholes.us
136verio.blackholes.us
135relays.ordb.org
130turkey.blackholes.us
130dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
120ohps.dnsbl.net.au
116dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
116spamguard.leadmon.net (union of all results)
115spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
107singapore.blackholes.us
103flowgoaway.com
91internap.blackholes.us
88multihop.dsbl.org
83dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
83dialup.blacklist.jippg.org (union of all results)
79dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
73cybercon.blackholes.us
71mail-abuse.blacklist.jippg.org
68thailand.blackholes.us
65osps.dnsbl.net.au
63bellsouth.blackholes.us
57blackholes.brainerd.net
56blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
55malaysia.blackholes.us
55dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
46relays.nether.net
45ph.rbl.cluecentral.net
44he.blackholes.us
43nigeria.blackholes.us
41inflow.blackholes.us
41dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
39osrs.dnsbl.net.au
34dnsbl.sorbs.net (result 127.0.0.5 = open relay)
33covad.blackholes.us
29yipes.blackholes.us
29blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
28rdts.dnsbl.net.au
27telstra.blackholes.us
24combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
24dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
24blackholes.uceb.org (union of all results)
23rogers.blackholes.us
23rackspace.blackholes.us
22swbell.blackholes.us
20a2000.blackholes.us
19dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
15eli.blackholes.us
14dnsbl.ahbl.org (result 127.0.0.15 = open relay)
14exemptions.ahbl.org (not a blacklist!)
13blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
12blackholes.uceb.org (result 127.0.0.3 = spam source)
12blackholes.uceb.org (result 127.0.0.2 = open relay)
11navisite.blackholes.us
11epoch.blackholes.us
11satos.rbl.cluecentral.net
10hil.habeas.com
8maxim.blackholes.us
8broadwing.blackholes.us
7olm.blackholes.us
7bl.deadbeef.com
5burst.blackholes.us
5affinity.blackholes.us
5owps.dnsbl.net.au
5blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
4pajo.blackholes.us
4infolink.blackholes.us
3relaywatcher.n13mbl.com
3omrs.dnsbl.net.au
2owfs.dnsbl.net.au
2dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)

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
34252(total number of IP addresses whose names were tested, including 439 at SDSC)
13773(union of all domain zones)
10120abuse.rfc-ignorant.org
7010rddn.dnsbl.net.au
3908whois.rfc-ignorant.org (union of all results)
3377dynamic.rhs.mailpolice.com
2943whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1450webmail.rhs.mailpolice.com
965whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
587rhsbl.ahbl.org
422adv.rhs.mailpolice.com
395bulk.rhs.mailpolice.com
277bl.deadbeef.com
24postmaster.rfc-ignorant.org
20dsn.rfc-ignorant.org (zone not intended for this use)
7porn.rhs.mailpolice.com
2blackhole.securitysage.com
2cart00ney.surriel.com
1bogusmx.rfc-ignorant.org

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

HitsDNS Zone
30181(total number of domains tested, including 317 at SDSC)
8527(union of all domain zones)
3643whois.rfc-ignorant.org (union of all results)
3132whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2530abuse.rfc-ignorant.org
1097postmaster.rfc-ignorant.org
1045webmail.rhs.mailpolice.com
927dsn.rfc-ignorant.org
872rhsbl.ahbl.org
864bulk.rhs.mailpolice.com
511whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
293bogusmx.rfc-ignorant.org
258blackhole.securitysage.com
253bl.deadbeef.com
242adv.rhs.mailpolice.com
61porn.rhs.mailpolice.com
59rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
59rhsbl.sorbs.net (union of all results)
48rddn.dnsbl.net.au (zone not intended for this use)
23dynamic.rhs.mailpolice.com
16ex.dnsbl.org
2cart00ney.surriel.com
1fraud.rhs.mailpolice.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 30 December 2004.