Blacklists Compared

29 November 2008

[ 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
65279(total number of IP addresses tested, including 457 at SDSC)
60217(union of most IP zones)
46362zen.spamhaus.org (union of all results)
43574t1.dnsbl.net.au
40289cbl.abuseat.org
40265zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
36778b.barracudacentral.org
29499zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
27275dnsbl-1.uceprotect.net
26658dnsbl-3.uceprotect.net
23483dnsbl-2.uceprotect.net
22113hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
20012ubl.unsubscore.com
17556blackholes.five-ten-sg.com (union of all results)
17133dnsbl.sorbs.net (union of all results)
16571no-more-funn.moensted.dk (union of all results)
16282psbl.surriel.com
14085blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
13163dnsbl.sorbs.net (result 127.0.0.10 = dialup)
9728no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
7612bl.spamcop.net
6994l2.apews.org
6064no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
6061spam.dnsbl.sorbs.net
6015zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
5793ix.dnsbl.manitu.net
5325countries.blackholes.us (result 127.1.5.6 = China)
4507bl.spamcannibal.org
4392ips.backscatterer.org
4271list.dnswl.org (not a blacklist!)
3878dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
3822db.wpbl.info
3620countries.blackholes.us (result 127.6.4.3 = Russia)
3035tr.countries.nerd.dk
2953countries.blackholes.us (result 127.0.7.6 = Brazil)
2880dnsbl.inps.de
2656spamsources.fabel.dk
2595hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2366blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2138countries.blackholes.us (result 127.7.9.2 = Turkey)
2127hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
1629korea.services.net
1382dnsbl.njabl.org (union of all results)
1327countries.blackholes.us (result 127.4.1.0 = Korea)
1183rmst.dnsbl.net.au
1114countries.blackholes.us (result 127.3.9.2 = Japan)
1065blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1029dnsbl.njabl.org (result 127.0.0.9 = open proxy)
935aspews.ext.sorbs.net
845countries.blackholes.us (result 127.7.6.4 = Thailand)
676mail-abuse.blacklist.jippg.org
560no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
554countries.blackholes.us (result 127.1.5.8 = Taiwan)
525countries.blackholes.us (result 127.0.3.2 = Argentina)
345zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
330countries.blackholes.us (result 127.4.8.4 = Mexico)
290dnsbl.njabl.org (result 127.0.0.4 = spam source)
286query.bondedsender.org (not a blacklist!)
240hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
188accredit.habeas.com (not a blacklist!)
180countries.blackholes.us (result 127.3.4.4 = Hong Kong)
179no-more-funn.moensted.dk (result 127.0.0.9 = misc)
159iadb2.isipp.com (not a blacklist!)
150zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
144countries.blackholes.us (result 127.7.0.2 = Singapore)
122iadb.isipp.com (not a blacklist!)
104work.drbl.croco.net
85dnsbl.sorbs.net (result 127.0.0.6 = spam source)
78countries.blackholes.us (result 127.4.5.8 = Malaysia)
71no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
66dnsbl.ahbl.org (union of all results)
63dnsbl.njabl.org (result 127.0.0.2 = open relay)
61probes.dnsbl.net.au
50tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
50bl.deadbeef.com
50tor.dnsbl.sectoor.de (union of all results)
47l2.bbfh.ext.sorbs.net
42dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
31dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
30blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
24dnsbl.ahbl.org (result 127.0.0.4 = spam source)
22dnsbl-0.uceprotect.net
20multi.surbl.org
18dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
10blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
8spamguard.leadmon.net (union of all results)
7countries.blackholes.us (result 127.5.6.6 = Nigeria)
6dnsbl.sorbs.net (result 127.0.0.5 = open relay)
6dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
6spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
4rdts.dnsbl.net.au
3multi.uribl.com (result 127.0.0.2 = spam resource)
3blackholes.brainerd.net
3multi.uribl.com (union of all results)
1spam.wytnij.to
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1spamguard.leadmon.net (result 127.0.0.8 = open proxy)
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
65279(total number of IP addresses whose names were tested, including 457 at SDSC)
29496(union of all domain zones)
21153abuse.rfc-ignorant.org
15042rddn.dnsbl.net.au
12623whois.rfc-ignorant.org (union of all results)
10154dynamic.rhs.mailpolice.com
7982whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
7521l1.apews.org
4641whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
1948webmail.rhs.mailpolice.com
709adv.rhs.mailpolice.com
170bl.deadbeef.com
119multi.surbl.org
106multi.uribl.com (union of all results)
105multi.uribl.com (result 127.0.0.2 = spam resource)
84postmaster.rfc-ignorant.org
60bogusmx.rfc-ignorant.org
59bulk.rhs.mailpolice.com
53dsn.rfc-ignorant.org (zone not intended for this use)
18rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
18rhsbl.sorbs.net (union of all results)
17rhsbl.ahbl.org
10dob.sibl.support-intelligence.net
7porn.rhs.mailpolice.com
1multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
1ex.dnsbl.org


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

HitsDNS Zone
47433(total number of domains tested, including 401 at SDSC)
12087(union of all domain zones)
5825whois.rfc-ignorant.org (union of all results)
5426whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2161abuse.rfc-ignorant.org
2022bogusmx.rfc-ignorant.org
1297postmaster.rfc-ignorant.org
1127multi.surbl.org
951l1.apews.org
841multi.uribl.com (union of all results)
809multi.uribl.com (result 127.0.0.2 = spam resource)
685webmail.rhs.mailpolice.com
493dsn.rfc-ignorant.org
399whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
267adv.rhs.mailpolice.com
173porn.rhs.mailpolice.com
87rhsbl.ahbl.org
76bulk.rhs.mailpolice.com
31multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
28rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
28rhsbl.sorbs.net (union of all results)
13rddn.dnsbl.net.au (zone not intended for this use)
9dob.sibl.support-intelligence.net
9ex.dnsbl.org
5dynamic.rhs.mailpolice.com
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
1fraud.rhs.mailpolice.com
1bl.deadbeef.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 5 December 2008.