Blacklists Compared

16 June 2007

[ 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, query.bondedsender.org, list.dnswl.org, accredit.habeas.com, iadb.isipp.com, and iadb2.isipp.com zones because they are not blacklists.

HitsDNS Zone
143517(total number of IP addresses tested, including 501 at SDSC)
136190(union of most IP zones)
110438zen.spamhaus.org (union of all results)
108783t1.dnsbl.net.au
81277dnsbl.sorbs.net (union of all results)
80238dynablock.njabl.org
80238pbl.spamhaus.org (union of all results)
79889sbl-xbl.spamhaus.org (union of all results)
79319xbl.spamhaus.org (union of all results)
78928cbl.abuseat.org
78891sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
78885zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
78884xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
75099no-more-funn.moensted.dk (union of all results)
73643l2.apews.dnsbl.uceprotect.net
72630zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
72630pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
72095dnsbl.tqmcube.com (union of all results)
66418dnsbl.sorbs.net (result 127.0.0.10 = dialup)
60462blackholes.five-ten-sg.com (union of all results)
57584psbl.surriel.com
55170blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
52793no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
46826dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
36481sbl.csma.biz
36358dnsbl-1.uceprotect.net
34917dnsbl-2.uceprotect.net
28682bl.spamcop.net
20589bl.csma.biz
20265dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
19415dnsbl-3.uceprotect.net
16852dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
15650ubl.unsubscore.com
15149no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
15131db.wpbl.info
13387unconfirmed.dsbl.org
13289list.dsbl.org
13284dsbl.dnsbl.net.au
13069cn-kr.blackholes.us (result 127.0.0.2 = China)
13069cn-kr.blackholes.us (union of all results)
10368dnsbl.tqmcube.com (result 127.0.0.5 = China)
8460mail-abuse.blacklist.jippg.org
8362china.blackholes.us
8327tr.countries.nerd.dk
8292turkey.blackholes.us
7726zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
7726pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
6772no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
6363korea.services.net
6248dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
5719combined-hib.dnsiplists.completewhois.com (union of all results)
5710combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
4690korea.blackholes.us
4117dnsbl.sorbs.net (result 127.0.0.6 = spam source)
4062blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
3913dnsbl.njabl.org (union of all results)
3708brazil.blackholes.us
3651dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3440spamsources.fabel.dk
2966list.dnswl.org (not a blacklist!)
2966bl.spamcannibal.org
2522dnsbl.ahbl.org (union of all results)
2384dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2112russia.blackholes.us
1822argentina.blackholes.us
1388zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1388xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1388sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1342probes.dnsbl.net.au
1263thailand.blackholes.us
1224japan.blackholes.us
1054blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1052taiwan.blackholes.us
817mexico.blackholes.us
711zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
711sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
711sbl.spamhaus.org
684malaysia.blackholes.us
489dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
455hongkong.blackholes.us
396dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
358blackholes.uceb.org (union of all results)
336blackholes.uceb.org (result 127.0.0.6 = spam haven)
275no-more-funn.moensted.dk (result 127.0.0.9 = misc)
248no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
238singapore.blackholes.us
185work.drbl.croco.net
181blackholes.uceb.org (result 127.0.0.3 = spam source)
168query.bondedsender.org (not a blacklist!)
145iadb2.isipp.com (not a blacklist!)
141dnsbl.njabl.org (result 127.0.0.2 = open relay)
138bl.deadbeef.com
128accredit.habeas.com (not a blacklist!)
121dnsbl.njabl.org (result 127.0.0.4 = spam source)
109blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
108spam.wytnij.to
96dnsbl.ahbl.org (result 127.0.0.4 = spam source)
76multihop.dsbl.org
62blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
49tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
49tor.dnsbl.sectoor.de (union of all results)
46dnsbl.antispam.or.id
43relays.nether.net
33dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
28iadb.isipp.com (not a blacklist!)
23nigeria.blackholes.us
23multi.surbl.org
22dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
19dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
14exemptions.ahbl.org (not a blacklist!)
12spamguard.leadmon.net (union of all results)
11spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
9combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
9blackholes.brainerd.net
8blackholes.uceb.org (result 127.0.0.2 = open relay)
8blackholes.uceb.org (result 127.0.0.5 = dialup)
8dnsbl.ahbl.org (result 127.0.0.15 = open relay)
7rdts.dnsbl.net.au
2multi.uribl.com (result 127.0.0.2 = spam resource)
2spamsites.dnsbl.net.au
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
2multi.uribl.com (union of all results)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
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 127.0.0.4 = unconfirmed opt-in)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
1blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)


Survey results for all known public domain-name-based DNS blacklists. Lookups were done on the domain names of connecting IP addresses.

HitsDNS Zone
143517(total number of IP addresses whose names were tested, including 501 at SDSC)
95408(union of all domain zones)
86640l1.apews.rhsbl.uceprotect.net
68698rddn.dnsbl.net.au
62396abuse.rfc-ignorant.org
42833dynamic.rhs.mailpolice.com
34558whois.rfc-ignorant.org (union of all results)
19320whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
15238whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
8282webmail.rhs.mailpolice.com
619multi.surbl.org
571multi.uribl.com (union of all results)
568multi.uribl.com (result 127.0.0.2 = spam resource)
505adv.rhs.mailpolice.com
103rhsbl.ahbl.org
101postmaster.rfc-ignorant.org
85bogusmx.rfc-ignorant.org
83dsn.rfc-ignorant.org (zone not intended for this use)
78bulk.rhs.mailpolice.com
52rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
52rhsbl.sorbs.net (union of all results)
11porn.rhs.mailpolice.com
5bl.deadbeef.com
2multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
2blackhole.securitysage.com
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1ex.dnsbl.org


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

HitsDNS Zone
74049(total number of domains tested, including 453 at SDSC)
14811(union of all domain zones)
5070whois.rfc-ignorant.org (union of all results)
4506whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3754abuse.rfc-ignorant.org
2590multi.surbl.org
2341multi.uribl.com (union of all results)
2300multi.uribl.com (result 127.0.0.2 = spam resource)
1922l1.apews.rhsbl.uceprotect.net
1854postmaster.rfc-ignorant.org
1462webmail.rhs.mailpolice.com
1101bogusmx.rfc-ignorant.org
864dsn.rfc-ignorant.org
564whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
242porn.rhs.mailpolice.com
223rhsbl.ahbl.org
178bulk.rhs.mailpolice.com
169adv.rhs.mailpolice.com
144blackhole.securitysage.com
95rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
95rhsbl.sorbs.net (union of all results)
38rddn.dnsbl.net.au (zone not intended for this use)
37multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
17ex.dnsbl.org
14dynamic.rhs.mailpolice.com
4multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2bl.deadbeef.com
1cart00ney.surriel.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 22 June 2007.