Blacklists Compared

1 December 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 hostkarma.junkemailfilter.com (127.0.0.1 result), 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.org zone is also excluded from the union.

HitsDNS Zone
193541(total number of IP addresses tested, including 493 at SDSC)
186598(union of most IP zones)
167807zen.spamhaus.org (union of all results)
166060l2.apews.org
157103t1.dnsbl.net.au
131425pbl.spamhaus.org (union of all results)
121911sbl-xbl.spamhaus.org (union of all results)
121502xbl.spamhaus.org (union of all results)
121344sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
121335cbl.abuseat.org
121316xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
121278zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
110756dnsbl-3.uceprotect.net
106606dnsbl.sorbs.net (union of all results)
101671zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
101619pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
99983dnsbl-2.uceprotect.net
98640dnsbl.tqmcube.com (union of all results)
96547dnsbl-1.uceprotect.net
84339psbl.surriel.com
83346dnsbl.sorbs.net (result 127.0.0.10 = dialup)
79744no-more-funn.moensted.dk (union of all results)
72970blackholes.five-ten-sg.com (union of all results)
72530dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
69430no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
66955blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
63986ubl.unsubscore.com
46920hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
39586bl.spamcop.net
29874db.wpbl.info
29806zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
29806pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
29456dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
24137dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
22957ix.dnsbl.manitu.net
12464unconfirmed.dsbl.org
12383dsbl.dnsbl.net.au
12376list.dsbl.org
12354mail-abuse.blacklist.jippg.org
10813countries.blackholes.us (result 127.0.7.6 = Brazil)
9350tr.countries.nerd.dk
8930countries.blackholes.us (result 127.6.4.3 = Russia)
8846countries.blackholes.us (result 127.7.9.2 = Turkey)
8162bl.spamcannibal.org
7753no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5553rmst.dnsbl.net.au
5499countries.blackholes.us (result 127.4.8.4 = Mexico)
5014dnsbl.tqmcube.com (result 127.0.0.5 = China)
4935countries.blackholes.us (result 127.1.5.6 = China)
4765blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4074list.dnswl.org (not a blacklist!)
4040dnsbl.njabl.org (union of all results)
3751dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3524korea.services.net
3516hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
3450countries.blackholes.us (result 127.0.3.2 = Argentina)
3393dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
3256countries.blackholes.us (result 127.4.1.0 = Korea)
3052ips.backscatterer.org
2708countries.blackholes.us (result 127.7.6.4 = Thailand)
2600dnsbl.ahbl.org (union of all results)
2476dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2081no-more-funn.moensted.dk (result 127.0.0.9 = misc)
2064probes.dnsbl.net.au
1973sbl.csma.biz
1852spamsources.fabel.dk
1824hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1819bl.csma.biz
1187blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1144countries.blackholes.us (result 127.4.5.8 = Malaysia)
912countries.blackholes.us (result 127.3.9.2 = Japan)
902countries.blackholes.us (result 127.1.5.8 = Taiwan)
732zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
732xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
732sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
499zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
499sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
499sbl.spamhaus.org
369no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
359countries.blackholes.us (result 127.3.4.4 = Hong Kong)
307countries.blackholes.us (result 127.7.0.2 = Singapore)
274work.drbl.croco.net
271no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
242blackholes.uceb.org (union of all results)
239dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
232dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
225blackholes.uceb.org (result 127.0.0.6 = spam haven)
172dnsbl.njabl.org (result 127.0.0.4 = spam source)
169accredit.habeas.com (not a blacklist!)
168aspews.ext.sorbs.net
162iadb2.isipp.com (not a blacklist!)
162iadb.isipp.com (not a blacklist!)
156query.bondedsender.org (not a blacklist!)
117dnsbl.njabl.org (result 127.0.0.2 = open relay)
114dnsbl.sorbs.net (result 127.0.0.6 = spam source)
111blackholes.uceb.org (result 127.0.0.3 = spam source)
98bl.deadbeef.com
82multi.surbl.org
79dnsbl.ahbl.org (result 127.0.0.4 = spam source)
69multi.uribl.com (result 127.0.0.2 = spam resource)
69multi.uribl.com (union of all results)
66multihop.dsbl.org
40blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
35hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
30rdts.dnsbl.net.au
25countries.blackholes.us (result 127.5.6.6 = Nigeria)
25relays.nether.net
24dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
22spam.wytnij.to
20blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
20dnsbl.ahbl.org (result 127.0.0.15 = open relay)
14exemptions.ahbl.org (not a blacklist!)
14spamguard.leadmon.net (union of all results)
11dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
9blackholes.brainerd.net
9dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
8spamguard.leadmon.net (result 127.0.0.8 = open proxy)
7blackholes.uceb.org (result 127.0.0.2 = open relay)
4spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
3blackholes.uceb.org (result 127.0.0.5 = dialup)
3owps.dnsbl.net.au
3ohps.dnsbl.net.au
3dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
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)
2dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
1osps.dnsbl.net.au
1omrs.dnsbl.net.au
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1dob.sibl.support-intelligence.net


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

HitsDNS Zone
193541(total number of IP addresses whose names were tested, including 493 at SDSC)
134284(union of all domain zones)
117538l1.apews.org
91309rddn.dnsbl.net.au
83651abuse.rfc-ignorant.org
57653dynamic.rhs.mailpolice.com
52471whois.rfc-ignorant.org (union of all results)
35855whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
16616whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
9599webmail.rhs.mailpolice.com
621multi.surbl.org
591multi.uribl.com (union of all results)
588multi.uribl.com (result 127.0.0.2 = spam resource)
525adv.rhs.mailpolice.com
137bl.deadbeef.com
84postmaster.rfc-ignorant.org
82bulk.rhs.mailpolice.com
81rhsbl.ahbl.org
74bogusmx.rfc-ignorant.org
61dsn.rfc-ignorant.org (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)
8porn.rhs.mailpolice.com
8dob.sibl.support-intelligence.net
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1multi.uribl.com (result 127.0.0.4 = opt-out spam resource)


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

HitsDNS Zone
159383(total number of domains tested, including 440 at SDSC)
43507(union of all domain zones)
27616whois.rfc-ignorant.org (union of all results)
27038whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
6697bogusmx.rfc-ignorant.org
4170abuse.rfc-ignorant.org
2749multi.surbl.org
2409multi.uribl.com (union of all results)
2341multi.uribl.com (result 127.0.0.2 = spam resource)
1804l1.apews.org
1423postmaster.rfc-ignorant.org
1371webmail.rhs.mailpolice.com
797dsn.rfc-ignorant.org
699porn.rhs.mailpolice.com
578whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
349bulk.rhs.mailpolice.com
346rhsbl.ahbl.org
193adv.rhs.mailpolice.com
142rddn.dnsbl.net.au (zone not intended for this use)
115dynamic.rhs.mailpolice.com
88dob.sibl.support-intelligence.net
76rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
76rhsbl.sorbs.net (union of all results)
43multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
25multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
3fraud.rhs.mailpolice.com
3bl.deadbeef.com
1cart00ney.surriel.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 5 December 2007.