Blacklists Compared

5 May 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
100832(total number of IP addresses tested, including 504 at SDSC)
93897(union of most IP zones)
74869t1.dnsbl.net.au
74812zen.spamhaus.org (union of all results)
56563dnsbl.sorbs.net (union of all results)
54392sbl-xbl.spamhaus.org (union of all results)
53885xbl.spamhaus.org (union of all results)
53590no-more-funn.moensted.dk (union of all results)
53547cbl.abuseat.org
53526zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
53526xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
53526sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
52076pbl.spamhaus.org (union of all results)
52062dynablock.njabl.org
51114dnsbl.tqmcube.com (union of all results)
48144zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
48144pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
44967blackholes.five-ten-sg.com (union of all results)
42998dnsbl.sorbs.net (result 127.0.0.10 = dialup)
40144blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
37011dnsbl-1.uceprotect.net
36743no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
36153psbl.surriel.com
34213dnsbl-2.uceprotect.net
31558dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
17741dnsbl-3.uceprotect.net
17585dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
14795bl.spamcop.net
13418db.wpbl.info
13237ubl.unsubscore.com
12436no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
12223dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
10407unconfirmed.dsbl.org
10329list.dsbl.org
10319dsbl.dnsbl.net.au
9803cn-kr.blackholes.us (result 127.0.0.2 = China)
9803cn-kr.blackholes.us (union of all results)
7491dnsbl.tqmcube.com (result 127.0.0.5 = China)
5922china.blackholes.us
5694ix.dnsbl.manitu.net
5686korea.services.net
5539dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
4853mail-abuse.blacklist.jippg.org
4186no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
4157blacklist.spambag.org
4089combined-hib.dnsiplists.completewhois.com (union of all results)
4079combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
3938zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
3938pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
3909korea.blackholes.us
3638blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
3230tr.countries.nerd.dk
3195turkey.blackholes.us
2935dnsbl.njabl.org (union of all results)
2902rmst.dnsbl.net.au
2860dnsbl.sorbs.net (result 127.0.0.6 = spam source)
2684dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2391bl.spamcannibal.org
2133brazil.blackholes.us
2088russia.blackholes.us
2043list.dnswl.org (not a blacklist!)
2028l2.apews.dnsbl.uceprotect.net
1930dnsbl.ahbl.org (union of all results)
1798dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1589spamsources.fabel.dk
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)
1034blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1012taiwan.blackholes.us
886japan.blackholes.us
848probes.dnsbl.net.au
732argentina.blackholes.us
662thailand.blackholes.us
632zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
632sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
632sbl.spamhaus.org
556malaysia.blackholes.us
488dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
359dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
357hongkong.blackholes.us
282mexico.blackholes.us
262blackholes.uceb.org (union of all results)
229blackholes.uceb.org (result 127.0.0.6 = spam haven)
225no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
223no-more-funn.moensted.dk (result 127.0.0.9 = misc)
212singapore.blackholes.us
206dnsbl.antispam.or.id
180sbl.csma.biz
172query.bondedsender.org (not a blacklist!)
138dnsbl.njabl.org (result 127.0.0.4 = spam source)
135accredit.habeas.com (not a blacklist!)
135work.drbl.croco.net
134iadb2.isipp.com (not a blacklist!)
134iadb.isipp.com (not a blacklist!)
127blackholes.uceb.org (result 127.0.0.3 = spam source)
112dnsbl.njabl.org (result 127.0.0.2 = open relay)
91blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
82bl.deadbeef.com
76dnsbl.ahbl.org (result 127.0.0.4 = spam source)
66multihop.dsbl.org
63spam.wytnij.to
52blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
44dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
35ohps.dnsbl.net.au
33dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
30tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
30tor.dnsbl.sectoor.de (union of all results)
25relays.nether.net
24multi.surbl.org
19blackholes.uceb.org (result 127.0.0.5 = dialup)
16osps.dnsbl.net.au
12dnsbl.ahbl.org (result 127.0.0.15 = open relay)
12dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
11exemptions.ahbl.org (not a blacklist!)
11spamguard.leadmon.net (union of all results)
10nigeria.blackholes.us
10combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
9rdts.dnsbl.net.au
8spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
6blackholes.uceb.org (result 127.0.0.2 = open relay)
6osrs.dnsbl.net.au
6blackholes.brainerd.net
5multi.uribl.com (result 127.0.0.2 = spam resource)
5multi.uribl.com (union of all results)
3owps.dnsbl.net.au
3spamguard.leadmon.net (result 127.0.0.3 = spam source)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
2blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
2blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
2blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1omrs.dnsbl.net.au
1dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)


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

HitsDNS Zone
100832(total number of IP addresses whose names were tested, including 504 at SDSC)
60558(union of all domain zones)
43778l1.apews.rhsbl.uceprotect.net
41878rddn.dnsbl.net.au
39647abuse.rfc-ignorant.org
30489dynamic.rhs.mailpolice.com
21363whois.rfc-ignorant.org (union of all results)
10894whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
10469whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
4931webmail.rhs.mailpolice.com
585multi.surbl.org
549multi.uribl.com (union of all results)
548multi.uribl.com (result 127.0.0.2 = spam resource)
519adv.rhs.mailpolice.com
348postmaster.rfc-ignorant.org
117rhsbl.ahbl.org
78bulk.rhs.mailpolice.com
66dsn.rfc-ignorant.org (zone not intended for this use)
65bogusmx.rfc-ignorant.org
36rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
36rhsbl.sorbs.net (union of all results)
12porn.rhs.mailpolice.com
6bl.deadbeef.com
3blackhole.securitysage.com
1multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
1fraud.rhs.mailpolice.com


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

HitsDNS Zone
59108(total number of domains tested, including 484 at SDSC)
12942(union of all domain zones)
5270whois.rfc-ignorant.org (union of all results)
4786whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3063abuse.rfc-ignorant.org
2277multi.surbl.org
2049multi.uribl.com (union of all results)
2006multi.uribl.com (result 127.0.0.2 = spam resource)
1463webmail.rhs.mailpolice.com
1442postmaster.rfc-ignorant.org
842bogusmx.rfc-ignorant.org
727dsn.rfc-ignorant.org
614l1.apews.rhsbl.uceprotect.net
484whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
217rhsbl.ahbl.org
216porn.rhs.mailpolice.com
178adv.rhs.mailpolice.com
134bulk.rhs.mailpolice.com
123blackhole.securitysage.com
81rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
81rhsbl.sorbs.net (union of all results)
42multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
36rddn.dnsbl.net.au (zone not intended for this use)
15ex.dnsbl.org
13dynamic.rhs.mailpolice.com
3fraud.rhs.mailpolice.com
3bl.deadbeef.com
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1cart00ney.surriel.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 11 May 2007.