Blacklists Compared

28 May 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
35927(total number of IP addresses tested, including 492 at SDSC)
30454(union of most IP zones)
20242t1.dnsbl.net.au
15066dnsbl.sorbs.net (union of all results)
14136sbl-xbl.spamhaus.org (union of all results)
12707xbl.spamhaus.org (union of all results)
11399sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11386xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11337cbl.abuseat.org
10582cn-kr.blackholes.us (union of all results)
10314dnsbl.sorbs.net (result 127.0.0.10 = dialup)
8725rmst.dnsbl.net.au
8527no-more-funn.moensted.dk (union of all results)
8371unconfirmed.dsbl.org
8294list.dsbl.org
8291dsbl.dnsbl.net.au
8017dynablock.njabl.org
7652blackholes.five-ten-sg.com (union of all results)
7329blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
6130sbl.csma.biz
5749cn-kr.blackholes.us (result 127.0.0.3 = Korea)
5749korea.blackholes.us
5725korea.services.net
5675psbl.surriel.com
5132combined-hib.dnsiplists.completewhois.com (union of all results)
5104combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
5056no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
4833cn-kr.blackholes.us (result 127.0.0.2 = China)
4833china.blackholes.us
4126bl.spamcop.net
3826dnsbl.ahbl.org (union of all results)
3675dnsbl.njabl.org (union of all results)
3491blacklist.spambag.org
3341bl.csma.biz
3328dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
3200l2.spews.dnsbl.sorbs.net
2962dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2807l1.spews.dnsbl.sorbs.net
2591dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2562spews.dnsbl.net.au
2552opm.blitzed.org
2550xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2546sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2436spamsources.fabel.dk
2186wpbl.dnsbl.net.au
2016dnsbl.rangers.eu.org (union of all results)
1940xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1939sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1902dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1792dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
1545sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1545sbl.spamhaus.org
1519dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1454no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1371dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1314no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1264pdl.blackholes.us
1244ricn.dnsbl.net.au
1107unsure.nether.net
1103comcast.blackholes.us
1102dnsbl.regedit64.net
1098brazil.blackholes.us
1076dnsbl.antispam.or.id
1024bl.spamcannibal.org
959spam.wytnij.to
658japan.blackholes.us
594taiwan.blackholes.us
534no-more-funn.moensted.dk (result 127.0.0.9 = misc)
506dnsbl.njabl.org (result 127.0.0.3 = dialup)
502probes.dnsbl.net.au
477dnsbl.ahbl.org (result 127.0.0.4 = spam source)
438rr.blackholes.us
410mci.blackholes.us
343argentina.blackholes.us
331charter.blackholes.us
317mexico.blackholes.us
255cw.blackholes.us
237interbusiness.blackholes.us
232ybl.megacity.org
214russia.blackholes.us
213blackholes.intersil.net
206tr.countries.nerd.dk
204turkey.blackholes.us
195level3.blackholes.us
189hongkong.blackholes.us
181no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
181query.bondedsender.org (not a blacklist!)
174singapore.blackholes.us
170qwest.blackholes.us
167blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
153dnsbl.njabl.org (result 127.0.0.2 = open relay)
147dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
146thailand.blackholes.us
132mail-abuse.blacklist.jippg.org
131ohps.dnsbl.net.au
126internap.blackholes.us
124dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
111blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
108verio.blackholes.us
105malaysia.blackholes.us
90flowgoaway.com
89wanadoo-fr.blackholes.us
88relays.ordb.org
84xo.blackholes.us
76cybercon.blackholes.us
72dnsbl.njabl.org (result 127.0.0.4 = spam source)
69multihop.dsbl.org
67osps.dnsbl.net.au
65above.blackholes.us
63dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
58dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
52bellsouth.blackholes.us
48broadwing.blackholes.us
45rogers.blackholes.us
42telstra.blackholes.us
41he.blackholes.us
37lauderdale.blackholes.us
36osrs.dnsbl.net.au
35a2000.blackholes.us
33inflow.blackholes.us
29relays.nether.net
28combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
28exemptions.ahbl.org (not a blacklist!)
25rdts.dnsbl.net.au
21eli.blackholes.us
19yipes.blackholes.us
18covad.blackholes.us
18blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
16nigeria.blackholes.us
16infolink.blackholes.us
16dnsbl.sorbs.net (result 127.0.0.5 = open relay)
16dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
16blackholes.uceb.org (union of all results)
15blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
14dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
14spamguard.leadmon.net (union of all results)
12spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
11rackspace.blackholes.us
10blackholes.uceb.org (result 127.0.0.2 = open relay)
10blackholes.brainerd.net
9olm.blackholes.us
9navisite.blackholes.us
9dialup.blacklist.jippg.org (union of all results)
8epoch.blackholes.us
8burst.blackholes.us
8affinity.blackholes.us
8dnsbl.ahbl.org (result 127.0.0.15 = open relay)
7maxim.blackholes.us
7dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
7hil.habeas.com
6swbell.blackholes.us
6blackholes.uceb.org (result 127.0.0.3 = spam source)
6blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
5blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
3pajo.blackholes.us
3owps.dnsbl.net.au
2ciberlynx.blackholes.us
2omrs.dnsbl.net.au
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
2no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1media3.blackholes.us
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1owfs.dnsbl.net.au
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)

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
35927(total number of IP addresses whose names were tested, including 492 at SDSC)
15980(union of all domain zones)
12611abuse.rfc-ignorant.org
7217rddn.dnsbl.net.au
5515whois.rfc-ignorant.org (union of all results)
4175whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3947dynamic.rhs.mailpolice.com
1430webmail.rhs.mailpolice.com
1342whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
503bulk.rhs.mailpolice.com
457rhsbl.ahbl.org
373bl.deadbeef.com
359adv.rhs.mailpolice.com
39postmaster.rfc-ignorant.org
25dsn.rfc-ignorant.org (zone not intended for this use)
5porn.rhs.mailpolice.com
4blackhole.securitysage.com
2bogusmx.rfc-ignorant.org
1cart00ney.surriel.com

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

HitsDNS Zone
24499(total number of domains tested, including 439 at SDSC)
6790(union of all domain zones)
2729whois.rfc-ignorant.org (union of all results)
2208whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2166abuse.rfc-ignorant.org
1227webmail.rhs.mailpolice.com
1085postmaster.rfc-ignorant.org
820dsn.rfc-ignorant.org
772rhsbl.ahbl.org
521whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
471bulk.rhs.mailpolice.com
431bogusmx.rfc-ignorant.org
199blackhole.securitysage.com
186adv.rhs.mailpolice.com
167bl.deadbeef.com
82porn.rhs.mailpolice.com
46rddn.dnsbl.net.au (zone not intended for this use)
36rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
36rhsbl.sorbs.net (union of all results)
25dynamic.rhs.mailpolice.com
12ex.dnsbl.org
3cart00ney.surriel.com
2fraud.rhs.mailpolice.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 9 June 2005.