Blacklists Compared

20 September 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
160255(total number of IP addresses tested, including 471 at SDSC)
152091(union of most IP zones)
129842zen.spamhaus.org (union of all results)
112724t1.dnsbl.net.au
89577cbl.abuseat.org
89483zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
80005zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
78148psbl.surriel.com
73267dnsbl-1.uceprotect.net
66054dnsbl-3.uceprotect.net
64685dnsbl.sorbs.net (union of all results)
63832hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
62214dnsbl-2.uceprotect.net
48853no-more-funn.moensted.dk (union of all results)
48335dnsbl.sorbs.net (result 127.0.0.10 = dialup)
43935blackholes.five-ten-sg.com (union of all results)
43534ubl.unsubscore.com
39865blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
32868no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
32421db.wpbl.info
29921bl.spamcop.net
25712ix.dnsbl.manitu.net
22106zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
16247dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
14083no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
11859spam.dnsbl.sorbs.net
11201countries.blackholes.us (result 127.1.5.6 = China)
9413bl.spamcannibal.org
9382mail-abuse.blacklist.jippg.org
9141dnsbl.inps.de
7706ips.backscatterer.org
7681countries.blackholes.us (result 127.0.7.6 = Brazil)
7363tr.countries.nerd.dk
5900countries.blackholes.us (result 127.6.4.3 = Russia)
5759korea.services.net
5430countries.blackholes.us (result 127.7.9.2 = Turkey)
4661countries.blackholes.us (result 127.4.1.0 = Korea)
4611list.dnswl.org (not a blacklist!)
4572hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
4564spamsources.fabel.dk
3269dnsbl.njabl.org (union of all results)
3064hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
2990blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2545dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2316rmst.dnsbl.net.au
2293countries.blackholes.us (result 127.7.6.4 = Thailand)
2116countries.blackholes.us (result 127.0.3.2 = Argentina)
1639countries.blackholes.us (result 127.3.9.2 = Japan)
1528aspews.ext.sorbs.net
1396no-more-funn.moensted.dk (result 127.0.0.9 = misc)
1103countries.blackholes.us (result 127.1.5.8 = Taiwan)
1030blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
876countries.blackholes.us (result 127.4.8.4 = Mexico)
541dnsbl.njabl.org (result 127.0.0.4 = spam source)
499l2.bbfh.ext.sorbs.net
441countries.blackholes.us (result 127.7.0.2 = Singapore)
422countries.blackholes.us (result 127.3.4.4 = Hong Kong)
350zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
344no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
331zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
280query.bondedsender.org (not a blacklist!)
216no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
205countries.blackholes.us (result 127.4.5.8 = Malaysia)
199accredit.habeas.com (not a blacklist!)
189tor.dnsbl.sectoor.de (union of all results)
187tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
187iadb2.isipp.com (not a blacklist!)
183dnsbl.njabl.org (result 127.0.0.2 = open relay)
175work.drbl.croco.net
170hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
162l1.bbfh.ext.sorbs.net
153probes.dnsbl.net.au
152iadb.isipp.com (not a blacklist!)
134bl.deadbeef.com
124dnsbl.sorbs.net (result 127.0.0.6 = spam source)
59dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
53multi.surbl.org
45dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
38exemptions.ahbl.org (not a blacklist!)
36l2.apews.org
29blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
20blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
13spamguard.leadmon.net (union of all results)
12countries.blackholes.us (result 127.5.6.6 = Nigeria)
9dnsbl.sorbs.net (result 127.0.0.5 = open relay)
9rdts.dnsbl.net.au
8spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
6dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
5spam.wytnij.to
4blackholes.brainerd.net
3spamguard.leadmon.net (result 127.0.0.3 = spam source)
2multi.uribl.com (result 127.0.0.2 = spam resource)
2tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
2spamguard.leadmon.net (result 127.0.0.8 = open proxy)
2multi.uribl.com (union of all results)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
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)
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
160255(total number of IP addresses whose names were tested, including 471 at SDSC)
85498(union of all domain zones)
61312abuse.rfc-ignorant.org
52038rddn.dnsbl.net.au
33322dynamic.rhs.mailpolice.com
32765whois.rfc-ignorant.org (union of all results)
20247whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
13151l1.apews.org
12518whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
6570webmail.rhs.mailpolice.com
614adv.rhs.mailpolice.com
374multi.surbl.org
353bl.deadbeef.com
254multi.uribl.com (union of all results)
252multi.uribl.com (result 127.0.0.2 = spam resource)
184bulk.rhs.mailpolice.com
101postmaster.rfc-ignorant.org
84bogusmx.rfc-ignorant.org
79rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
79rhsbl.sorbs.net (union of all results)
76dsn.rfc-ignorant.org (zone not intended for this use)
15dob.sibl.support-intelligence.net
7porn.rhs.mailpolice.com
2multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
2ex.dnsbl.org


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

HitsDNS Zone
121626(total number of domains tested, including 414 at SDSC)
24422(union of all domain zones)
13148whois.rfc-ignorant.org (union of all results)
12538whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4645bogusmx.rfc-ignorant.org
3876abuse.rfc-ignorant.org
1993postmaster.rfc-ignorant.org
1526multi.surbl.org
1033webmail.rhs.mailpolice.com
976multi.uribl.com (union of all results)
923multi.uribl.com (result 127.0.0.2 = spam resource)
851dsn.rfc-ignorant.org
610whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
446porn.rhs.mailpolice.com
297adv.rhs.mailpolice.com
143bulk.rhs.mailpolice.com
61rddn.dnsbl.net.au (zone not intended for this use)
51dynamic.rhs.mailpolice.com
47multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
41rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
41rhsbl.sorbs.net (union of all results)
14ex.dnsbl.org
9dob.sibl.support-intelligence.net
6multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
4fraud.rhs.mailpolice.com
3bl.deadbeef.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 26 September 2008.