Blacklists Compared

21 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
35925(total number of IP addresses tested, including 437 at SDSC)
30388(union of most IP zones)
20532t1.dnsbl.net.au
14844sbl-xbl.spamhaus.org (union of all results)
14839dnsbl.sorbs.net (union of all results)
12921xbl.spamhaus.org (union of all results)
11582xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11582sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
11576cbl.abuseat.org
11287cn-kr.blackholes.us (union of all results)
9904dnsbl.sorbs.net (result 127.0.0.10 = dialup)
9487no-more-funn.moensted.dk (union of all results)
8695unconfirmed.dsbl.org
8617rmst.dnsbl.net.au
8593list.dsbl.org
8588dsbl.dnsbl.net.au
7713dynablock.njabl.org
7560blackholes.five-ten-sg.com (union of all results)
7218blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
6590sbl.csma.biz
6562cn-kr.blackholes.us (result 127.0.0.3 = Korea)
6562korea.blackholes.us
6538korea.services.net
5812psbl.surriel.com
5713no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5402combined-hib.dnsiplists.completewhois.com (union of all results)
5349combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
4725cn-kr.blackholes.us (result 127.0.0.2 = China)
4725china.blackholes.us
4203dnsbl.ahbl.org (union of all results)
4160bl.spamcop.net
3917bl.csma.biz
3865dnsbl.njabl.org (union of all results)
3715blacklist.spambag.org
3606dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
3306l2.spews.dnsbl.sorbs.net
3235dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2887l1.spews.dnsbl.sorbs.net
2785spews.dnsbl.net.au
2739xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2739opm.blitzed.org
2737sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
2556wpbl.dnsbl.net.au
2487dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2311spamsources.fabel.dk
2288xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
2287sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
2100sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
2100sbl.spamhaus.org
2099dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1817dnsbl.rangers.eu.org (union of all results)
1746ricn.dnsbl.net.au
1693dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1645dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
1518no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1412spam.wytnij.to
1393dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
1369no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1313dnsbl.regedit64.net
1178comcast.blackholes.us
1145dnsbl.antispam.or.id
1068unsure.nether.net
1067brazil.blackholes.us
1050bl.spamcannibal.org
1041pdl.blackholes.us
717no-more-funn.moensted.dk (result 127.0.0.9 = misc)
680japan.blackholes.us
650probes.dnsbl.net.au
568dnsbl.ahbl.org (result 127.0.0.4 = spam source)
453taiwan.blackholes.us
432mci.blackholes.us
415dnsbl.njabl.org (result 127.0.0.3 = dialup)
353rr.blackholes.us
310argentina.blackholes.us
301charter.blackholes.us
262cw.blackholes.us
234mexico.blackholes.us
227blackholes.intersil.net
210russia.blackholes.us
191level3.blackholes.us
188ybl.megacity.org
188interbusiness.blackholes.us
184blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
178no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
174query.bondedsender.org (not a blacklist!)
173tr.countries.nerd.dk
172turkey.blackholes.us
167mail-abuse.blacklist.jippg.org
163qwest.blackholes.us
138ohps.dnsbl.net.au
134dnsbl.njabl.org (result 127.0.0.2 = open relay)
131singapore.blackholes.us
128thailand.blackholes.us
125internap.blackholes.us
124dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
123hongkong.blackholes.us
113verio.blackholes.us
105relays.ordb.org
102blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
97dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
94flowgoaway.com
90dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
85dnsbl.njabl.org (result 127.0.0.4 = spam source)
83multihop.dsbl.org
80xo.blackholes.us
75bellsouth.blackholes.us
74malaysia.blackholes.us
73wanadoo-fr.blackholes.us
73above.blackholes.us
72cybercon.blackholes.us
70broadwing.blackholes.us
65dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
59telstra.blackholes.us
56osps.dnsbl.net.au
55combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
53rogers.blackholes.us
53lauderdale.blackholes.us
40he.blackholes.us
36a2000.blackholes.us
33inflow.blackholes.us
31infolink.blackholes.us
31relays.nether.net
29exemptions.ahbl.org (not a blacklist!)
28covad.blackholes.us
28dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
26osrs.dnsbl.net.au
24blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
23blackholes.uceb.org (union of all results)
20rackspace.blackholes.us
19yipes.blackholes.us
18eli.blackholes.us
18blackholes.brainerd.net
17blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
16affinity.blackholes.us
15dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
15rdts.dnsbl.net.au
13blackholes.uceb.org (result 127.0.0.3 = spam source)
11epoch.blackholes.us
11dnsbl.sorbs.net (result 127.0.0.5 = open relay)
10maxim.blackholes.us
10blackholes.uceb.org (result 127.0.0.2 = open relay)
10blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
10dialup.blacklist.jippg.org (union of all results)
8burst.blackholes.us
8dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
7swbell.blackholes.us
7nigeria.blackholes.us
7navisite.blackholes.us
6olm.blackholes.us
6hil.habeas.com
6spamguard.leadmon.net (union of all results)
5spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
4omrs.dnsbl.net.au
4blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
3pajo.blackholes.us
2ciberlynx.blackholes.us
2dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
2bl.deadbeef.com
2dnsbl.ahbl.org (result 127.0.0.15 = open relay)
1media3.blackholes.us
1owps.dnsbl.net.au
1owfs.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)
1no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
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
35925(total number of IP addresses whose names were tested, including 437 at SDSC)
15308(union of all domain zones)
11883abuse.rfc-ignorant.org
6571rddn.dnsbl.net.au
4691whois.rfc-ignorant.org (union of all results)
3345whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
3275dynamic.rhs.mailpolice.com
1384webmail.rhs.mailpolice.com
1348whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
576bulk.rhs.mailpolice.com
471rhsbl.ahbl.org
329adv.rhs.mailpolice.com
251bl.deadbeef.com
43postmaster.rfc-ignorant.org
26dsn.rfc-ignorant.org (zone not intended for this use)
7porn.rhs.mailpolice.com
3bogusmx.rfc-ignorant.org
2blackhole.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
25367(total number of domains tested, including 371 at SDSC)
6727(union of all domain zones)
2626whois.rfc-ignorant.org (union of all results)
2217abuse.rfc-ignorant.org
2118whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1105postmaster.rfc-ignorant.org
1020webmail.rhs.mailpolice.com
861rhsbl.ahbl.org
828dsn.rfc-ignorant.org
508whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
489bulk.rhs.mailpolice.com
437bogusmx.rfc-ignorant.org
195blackhole.securitysage.com
191adv.rhs.mailpolice.com
152bl.deadbeef.com
81porn.rhs.mailpolice.com
55rddn.dnsbl.net.au (zone not intended for this use)
33rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
33rhsbl.sorbs.net (union of all results)
27dynamic.rhs.mailpolice.com
16ex.dnsbl.org
2fraud.rhs.mailpolice.com
2cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 1 June 2005.