Blacklists Compared

5 March 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
38075(total number of IP addresses tested, including 432 at SDSC)
32713(union of most IP zones)
25096t1.dnsbl.net.au
22858blackholes.five-ten-sg.com (union of all results)
22047blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
17338dnsbl.sorbs.net (union of all results)
14404sbl-xbl.spamhaus.org (union of all results)
13359cn-kr.blackholes.us (union of all results)
12850xbl.spamhaus.org (union of all results)
12082no-more-funn.moensted.dk (union of all results)
11818dnsbl.sorbs.net (result 127.0.0.10 = dialup)
11683xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11683cbl.abuseat.org
11682sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
10632unconfirmed.dsbl.org
10552list.dsbl.org
10549dsbl.dnsbl.net.au
9743cn-kr.blackholes.us (result 127.0.0.3 = Korea)
9743korea.blackholes.us
9741korea.services.net
9683dynablock.njabl.org
9002rmst.dnsbl.net.au
8622no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
7613sbl.csma.biz
7205combined-hib.dnsiplists.completewhois.com (union of all results)
7132combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
6421psbl.surriel.com
4764bl.csma.biz
4473bl.spamcop.net
4287dnsbl.njabl.org (union of all results)
3616cn-kr.blackholes.us (result 127.0.0.2 = China)
3616china.blackholes.us
3526blacklist.spambag.org
3402dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3371xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
3371sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
3339dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
3334wpbl.dnsbl.net.au
3323opm.blitzed.org
3081ricn.dnsbl.net.au
2977l2.spews.dnsbl.sorbs.net
2803dnsbl.ahbl.org (union of all results)
2535spews.dnsbl.net.au
2503l1.spews.dnsbl.sorbs.net
2210spamsources.fabel.dk
2190dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2171dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1839spam.wytnij.to
1793sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1793sbl.spamhaus.org
1788dnsbl.regedit64.net
1689dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1587no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1453dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1349pdl.blackholes.us
1295dnsbl.rangers.eu.org (union of all results)
1185dnsbl.antispam.or.id
1137no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1131dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
1040bl.spamcannibal.org
1001brazil.blackholes.us
831unsure.nether.net
745dnsbl.njabl.org (result 127.0.0.3 = dialup)
682comcast.blackholes.us
643japan.blackholes.us
631probes.dnsbl.net.au
548dnsbl.ahbl.org (result 127.0.0.4 = spam source)
519ybl.megacity.org
511no-more-funn.moensted.dk (result 127.0.0.9 = misc)
486level3.blackholes.us
457blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
371taiwan.blackholes.us
362rr.blackholes.us
327mexico.blackholes.us
324russia.blackholes.us
318charter.blackholes.us
288cw.blackholes.us
244blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
240argentina.blackholes.us
240no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
237mail-abuse.blacklist.jippg.org
232blackholes.intersil.net
217interbusiness.blackholes.us
190hongkong.blackholes.us
168tr.countries.nerd.dk
167turkey.blackholes.us
154query.bondedsender.org (not a blacklist!)
150dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
148qwest.blackholes.us
137verio.blackholes.us
130ohps.dnsbl.net.au
114thailand.blackholes.us
113above.blackholes.us
101wanadoo-fr.blackholes.us
96dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
95flowgoaway.com
91osps.dnsbl.net.au
89xo.blackholes.us
87internap.blackholes.us
86singapore.blackholes.us
82dnsbl.njabl.org (result 127.0.0.2 = source or relay)
79relays.ordb.org
76dnsbl.njabl.org (result 127.0.0.4 = spam source)
73combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
69blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
68malaysia.blackholes.us
65dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
64multihop.dsbl.org
63cybercon.blackholes.us
59inflow.blackholes.us
57dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
52bellsouth.blackholes.us
47rogers.blackholes.us
44he.blackholes.us
41covad.blackholes.us
41relays.nether.net
38ph.rbl.cluecentral.net
37a2000.blackholes.us
36epoch.blackholes.us
34telstra.blackholes.us
32dialup.blacklist.jippg.org (union of all results)
30rdts.dnsbl.net.au
29osrs.dnsbl.net.au
27nigeria.blackholes.us
27dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
27dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
23blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
23blackholes.uceb.org (union of all results)
22eli.blackholes.us
22exemptions.ahbl.org (not a blacklist!)
21dnsbl.sorbs.net (result 127.0.0.5 = open relay)
21dnsbl.ahbl.org (result 127.0.0.15 = open relay)
20yipes.blackholes.us
17infolink.blackholes.us
17spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
17spamguard.leadmon.net (union of all results)
16burst.blackholes.us
15rackspace.blackholes.us
15dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
13blackholes.uceb.org (result 127.0.0.3 = spam source)
12maxim.blackholes.us
12blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
10dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
10blackholes.brainerd.net
9swbell.blackholes.us
9broadwing.blackholes.us
9affinity.blackholes.us
9hil.habeas.com
8olm.blackholes.us
8blackholes.uceb.org (result 127.0.0.2 = open relay)
6owps.dnsbl.net.au
6satos.rbl.cluecentral.net
5dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
5blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
4navisite.blackholes.us
3bl.deadbeef.com
2pajo.blackholes.us
2ciberlynx.blackholes.us
2blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1spamsites.dnsbl.net.au
1omrs.dnsbl.net.au
1owfs.dnsbl.net.au
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
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)
1work.drbl.croco.net

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
38075(total number of IP addresses whose names were tested, including 432 at SDSC)
15026(union of all domain zones)
11446abuse.rfc-ignorant.org
7602rddn.dnsbl.net.au
3900whois.rfc-ignorant.org (union of all results)
3389dynamic.rhs.mailpolice.com
2783whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1763webmail.rhs.mailpolice.com
1117whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
565bulk.rhs.mailpolice.com
530rhsbl.ahbl.org
352adv.rhs.mailpolice.com
224bl.deadbeef.com
22postmaster.rfc-ignorant.org
19dsn.rfc-ignorant.org (zone not intended for this use)
8porn.rhs.mailpolice.com
4blackhole.securitysage.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
24556(total number of domains tested, including 318 at SDSC)
6509(union of all domain zones)
2384whois.rfc-ignorant.org (union of all results)
1982whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1979abuse.rfc-ignorant.org
1319rhsbl.ahbl.org
922webmail.rhs.mailpolice.com
900postmaster.rfc-ignorant.org
699bulk.rhs.mailpolice.com
663dsn.rfc-ignorant.org
402whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
246bogusmx.rfc-ignorant.org
201blackhole.securitysage.com
190adv.rhs.mailpolice.com
157bl.deadbeef.com
113porn.rhs.mailpolice.com
66rddn.dnsbl.net.au (zone not intended for this use)
39rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
39rhsbl.sorbs.net (union of all results)
32dynamic.rhs.mailpolice.com
14ex.dnsbl.org
2fraud.rhs.mailpolice.com
2cart00ney.surriel.com

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