Blacklists Compared

4 August 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. Because it is too aggressive to be widely useful the l2.apews.dnsbl.uceprotect.net zone is also excluded.

HitsDNS Zone
208719(total number of IP addresses tested, including 487 at SDSC)
196457(union of most IP zones)
165490l2.apews.dnsbl.uceprotect.net
154462zen.spamhaus.org (union of all results)
149379t1.dnsbl.net.au
116957dnsbl.sorbs.net (union of all results)
116431pbl.spamhaus.org (union of all results)
116358dynablock.njabl.org
107505sbl-xbl.spamhaus.org (union of all results)
107336dnsbl.tqmcube.com (union of all results)
106871xbl.spamhaus.org (union of all results)
106579cbl.abuseat.org
106509zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
106498xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
106453sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
95975zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
95975pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
92678no-more-funn.moensted.dk (union of all results)
83648blackholes.five-ten-sg.com (union of all results)
83374dnsbl.sorbs.net (result 127.0.0.10 = dialup)
82545psbl.surriel.com
78178blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
66130no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
63675dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
57493dnsbl-1.uceprotect.net
44523dnsbl-2.uceprotect.net
41797dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
37144bl.spamcop.net
32854sbl.csma.biz
30695dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
25649db.wpbl.info
23567no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
22532dnsbl-3.uceprotect.net
21722ubl.unsubscore.com
21456zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
21456pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
18672ix.dnsbl.manitu.net
17100cn-kr.blackholes.us (result 127.0.0.2 = China)
17100cn-kr.blackholes.us (union of all results)
16292dnsbl.tqmcube.com (result 127.0.0.5 = China)
15367unconfirmed.dsbl.org
15227list.dsbl.org
15214dsbl.dnsbl.net.au
11866bl.csma.biz
11696mail-abuse.blacklist.jippg.org
11437china.blackholes.us
11368tr.countries.nerd.dk
11209korea.services.net
10998dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
9799ips.backscatterer.org
8139turkey.blackholes.us
6490combined-hib.dnsiplists.completewhois.com (union of all results)
6474combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
5629korea.blackholes.us
4474bl.spamcannibal.org
4452dnsbl.njabl.org (union of all results)
4304rmst.dnsbl.net.au
4299blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4213dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3871list.dnswl.org (not a blacklist!)
3775spamsources.fabel.dk
3575russia.blackholes.us
3042brazil.blackholes.us
3023dnsbl.ahbl.org (union of all results)
2869dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2097no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1606japan.blackholes.us
1587probes.dnsbl.net.au
1493argentina.blackholes.us
1326taiwan.blackholes.us
1319zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1319xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1319sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1058blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1023malaysia.blackholes.us
833thailand.blackholes.us
825zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
825sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
824sbl.spamhaus.org
782mexico.blackholes.us
577blackholes.uceb.org (union of all results)
561no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
503no-more-funn.moensted.dk (result 127.0.0.9 = misc)
484blackholes.uceb.org (result 127.0.0.6 = spam haven)
483hongkong.blackholes.us
467dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
396dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
300aspews.dnsbl.sorbs.net
288work.drbl.croco.net
286singapore.blackholes.us
233blackholes.uceb.org (result 127.0.0.3 = spam source)
147iadb2.isipp.com (not a blacklist!)
145iadb.isipp.com (not a blacklist!)
144dnsbl.njabl.org (result 127.0.0.4 = spam source)
139query.bondedsender.org (not a blacklist!)
136accredit.habeas.com (not a blacklist!)
114multihop.dsbl.org
108bl.deadbeef.com
95dnsbl.njabl.org (result 127.0.0.2 = open relay)
92spam.wytnij.to
92ohps.dnsbl.net.au
79relays.nether.net
68dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
65blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
62dnsbl.ahbl.org (result 127.0.0.4 = spam source)
58blackholes.uceb.org (result 127.0.0.5 = dialup)
57tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
57tor.dnsbl.sectoor.de (union of all results)
47dnsbl.sorbs.net (result 127.0.0.6 = spam source)
40multi.surbl.org
40blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
38dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
23blackholes.brainerd.net
21exemptions.ahbl.org (not a blacklist!)
20blackholes.uceb.org (result 127.0.0.2 = open relay)
19spamguard.leadmon.net (union of all results)
18rdts.dnsbl.net.au
16combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
15nigeria.blackholes.us
14osps.dnsbl.net.au
13spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
10multi.uribl.com (result 127.0.0.2 = spam resource)
10multi.uribl.com (union of all results)
9dnsbl.ahbl.org (result 127.0.0.15 = open relay)
8dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
6spamguard.leadmon.net (result 127.0.0.3 = spam source)
5owps.dnsbl.net.au
5osrs.dnsbl.net.au
5blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
3dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
3dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2spamsites.dnsbl.net.au
2no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.uceb.org (result 127.0.0.9 = uncooperative company)
1omrs.dnsbl.net.au
1no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)

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

HitsDNS Zone
208719(total number of IP addresses whose names were tested, including 487 at SDSC)
129345(union of all domain zones)
115406l1.apews.rhsbl.uceprotect.net
89379rddn.dnsbl.net.au
78889abuse.rfc-ignorant.org
50825dynamic.rhs.mailpolice.com
48933whois.rfc-ignorant.org (union of all results)
28737whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
20196whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
11543webmail.rhs.mailpolice.com
650multi.surbl.org
627multi.uribl.com (result 127.0.0.2 = spam resource)
627multi.uribl.com (union of all results)
504adv.rhs.mailpolice.com
131postmaster.rfc-ignorant.org
119rhsbl.ahbl.org
98dsn.rfc-ignorant.org (zone not intended for this use)
95bulk.rhs.mailpolice.com
88bogusmx.rfc-ignorant.org
65rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
65rhsbl.sorbs.net (union of all results)
31porn.rhs.mailpolice.com
7bl.deadbeef.com
5blackhole.securitysage.com
2ex.dnsbl.org

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

HitsDNS Zone
133699(total number of domains tested, including 427 at SDSC)
29517(union of all domain zones)
14949whois.rfc-ignorant.org (union of all results)
14145whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
5799abuse.rfc-ignorant.org
4086multi.surbl.org
2560l1.apews.rhsbl.uceprotect.net
2536postmaster.rfc-ignorant.org
2506bogusmx.rfc-ignorant.org
2463multi.uribl.com (union of all results)
2385multi.uribl.com (result 127.0.0.2 = spam resource)
1939webmail.rhs.mailpolice.com
1189dsn.rfc-ignorant.org
804whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
567porn.rhs.mailpolice.com
314rhsbl.ahbl.org
270bulk.rhs.mailpolice.com
224blackhole.securitysage.com
203adv.rhs.mailpolice.com
100rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
100rhsbl.sorbs.net (union of all results)
72multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
60rddn.dnsbl.net.au (zone not intended for this use)
33dynamic.rhs.mailpolice.com
20ex.dnsbl.org
6multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
4bl.deadbeef.com
2fraud.rhs.mailpolice.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 10 August 2007.