Blacklists Compared

8 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
200523(total number of IP addresses tested, including 489 at SDSC)
193698(union of most IP zones)
172657l2.apews.org
172036zen.spamhaus.org (union of all results)
157866t1.dnsbl.net.au
136793pbl.spamhaus.org (union of all results)
116841dnsbl-3.uceprotect.net
115372sbl-xbl.spamhaus.org (union of all results)
115035xbl.spamhaus.org (union of all results)
114879cbl.abuseat.org
114840zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
114824xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
114751sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
111589psbl.surriel.com
107589zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
107540pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
107395dnsbl.sorbs.net (union of all results)
104835dnsbl-2.uceprotect.net
102851dnsbl.tqmcube.com (union of all results)
102254dnsbl-1.uceprotect.net
86375dnsbl.sorbs.net (result 127.0.0.10 = dialup)
83032ubl.unsubscore.com
80733no-more-funn.moensted.dk (union of all results)
74408dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
74103blackholes.five-ten-sg.com (union of all results)
70352no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
68159blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
42808bl.spamcop.net
36261hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
33223db.wpbl.info
32280dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
29253zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
29253pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
26223ix.dnsbl.manitu.net
21772dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
16088sbl.csma.biz
15413bl.csma.biz
12539mail-abuse.blacklist.jippg.org
12493unconfirmed.dsbl.org
12422list.dsbl.org
12420dsbl.dnsbl.net.au
10362countries.blackholes.us (result 127.0.7.6 = Brazil)
9097bl.spamcannibal.org
8447countries.blackholes.us (result 127.6.4.3 = Russia)
8409no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
8232tr.countries.nerd.dk
7653countries.blackholes.us (result 127.7.9.2 = Turkey)
6806countries.blackholes.us (result 127.4.8.4 = Mexico)
5663rmst.dnsbl.net.au
5515dnsbl.tqmcube.com (result 127.0.0.5 = China)
5506countries.blackholes.us (result 127.1.5.6 = China)
4689blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4127dnsbl.njabl.org (union of all results)
3826list.dnswl.org (not a blacklist!)
3786dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3611korea.services.net
3527countries.blackholes.us (result 127.0.3.2 = Argentina)
3501dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
3348countries.blackholes.us (result 127.4.1.0 = Korea)
2558dnsbl.ahbl.org (union of all results)
2508countries.blackholes.us (result 127.7.6.4 = Thailand)
2453dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2262spamsources.fabel.dk
1969ips.backscatterer.org
1788hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1674probes.dnsbl.net.au
1526no-more-funn.moensted.dk (result 127.0.0.9 = misc)
1254hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
1197blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
908countries.blackholes.us (result 127.4.5.8 = Malaysia)
876countries.blackholes.us (result 127.1.5.8 = Taiwan)
715zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
715xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
713sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
709countries.blackholes.us (result 127.3.9.2 = Japan)
512zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
512sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
512sbl.spamhaus.org
378countries.blackholes.us (result 127.3.4.4 = Hong Kong)
335countries.blackholes.us (result 127.7.0.2 = Singapore)
304aspews.ext.sorbs.net
285no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
247no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
246dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
242work.drbl.croco.net
236dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
205blackholes.uceb.org (union of all results)
188blackholes.uceb.org (result 127.0.0.6 = spam haven)
178query.bondedsender.org (not a blacklist!)
176dnsbl.njabl.org (result 127.0.0.2 = open relay)
170accredit.habeas.com (not a blacklist!)
165dnsbl.njabl.org (result 127.0.0.4 = spam source)
138iadb2.isipp.com (not a blacklist!)
138iadb.isipp.com (not a blacklist!)
129dnsbl.sorbs.net (result 127.0.0.6 = spam source)
104blackholes.uceb.org (result 127.0.0.3 = spam source)
92bl.deadbeef.com
82multi.surbl.org
69multi.uribl.com (result 127.0.0.2 = spam resource)
69multi.uribl.com (union of all results)
56dnsbl.ahbl.org (result 127.0.0.4 = spam source)
53multihop.dsbl.org
48hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
36rdts.dnsbl.net.au
36blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
31spam.wytnij.to
30dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
29dnsbl.ahbl.org (result 127.0.0.15 = open relay)
21blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
20relays.nether.net
19countries.blackholes.us (result 127.5.6.6 = Nigeria)
14dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
13spamguard.leadmon.net (union of all results)
12exemptions.ahbl.org (not a blacklist!)
9spamguard.leadmon.net (result 127.0.0.8 = open proxy)
9blackholes.brainerd.net
5blackholes.uceb.org (result 127.0.0.5 = dialup)
4dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
3owps.dnsbl.net.au
3spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
2blackholes.uceb.org (result 127.0.0.2 = open relay)
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2ohps.dnsbl.net.au
1osrs.dnsbl.net.au
1omrs.dnsbl.net.au
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
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
1dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
1dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)


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

HitsDNS Zone
200523(total number of IP addresses whose names were tested, including 489 at SDSC)
139597(union of all domain zones)
121846l1.apews.org
94377rddn.dnsbl.net.au
88209abuse.rfc-ignorant.org
59806dynamic.rhs.mailpolice.com
55822whois.rfc-ignorant.org (union of all results)
38989whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
16833whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
9914webmail.rhs.mailpolice.com
802multi.surbl.org
706multi.uribl.com (union of all results)
704multi.uribl.com (result 127.0.0.2 = spam resource)
550adv.rhs.mailpolice.com
155bl.deadbeef.com
89postmaster.rfc-ignorant.org
82rhsbl.ahbl.org
81dob.sibl.support-intelligence.net
80bulk.rhs.mailpolice.com
70bogusmx.rfc-ignorant.org
67dsn.rfc-ignorant.org (zone not intended for this use)
21rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
21rhsbl.sorbs.net (union of all results)
6porn.rhs.mailpolice.com
1multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
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
151391(total number of domains tested, including 457 at SDSC)
39612(union of all domain zones)
24059whois.rfc-ignorant.org (union of all results)
23537whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
6982bogusmx.rfc-ignorant.org
3668abuse.rfc-ignorant.org
2856multi.surbl.org
2380multi.uribl.com (union of all results)
2328multi.uribl.com (result 127.0.0.2 = spam resource)
1580l1.apews.org
1305postmaster.rfc-ignorant.org
1192webmail.rhs.mailpolice.com
721dsn.rfc-ignorant.org
572porn.rhs.mailpolice.com
522whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
318bulk.rhs.mailpolice.com
303rhsbl.ahbl.org
183adv.rhs.mailpolice.com
130rddn.dnsbl.net.au (zone not intended for this use)
112dynamic.rhs.mailpolice.com
94dob.sibl.support-intelligence.net
65rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
65rhsbl.sorbs.net (union of all results)
45multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
7multi.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 13 December 2007.