Blacklists Compared

19 January 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
221416(total number of IP addresses tested, including 468 at SDSC)
209778(union of most IP zones)
187958l2.apews.org
185212zen.spamhaus.org (union of all results)
173473t1.dnsbl.net.au
145903sbl-xbl.spamhaus.org (union of all results)
145542xbl.spamhaus.org (union of all results)
145377cbl.abuseat.org
145303sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
145238zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
145231xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
142277pbl.spamhaus.org (union of all results)
116199dnsbl-3.uceprotect.net
111379dnsbl-1.uceprotect.net
111342dnsbl-2.uceprotect.net
107489pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
107424zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
102092dnsbl.sorbs.net (union of all results)
99796ubl.unsubscore.com
97955psbl.surriel.com
82981no-more-funn.moensted.dk (union of all results)
82442dnsbl.sorbs.net (result 127.0.0.10 = dialup)
76987hostkarma.junkemailfilter.com (result 127.0.0.2 = spam source)
76094blackholes.five-ten-sg.com (union of all results)
71963no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
70398blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
47297bl.spamcop.net
34788zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
34788pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
32207ix.dnsbl.manitu.net
26617db.wpbl.info
24104dnsbl.tqmcube.com (union of all results)
20157dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
15043dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
14769unconfirmed.dsbl.org
14617list.dsbl.org
14615dsbl.dnsbl.net.au
13239tr.countries.nerd.dk
13188bl.spamcannibal.org
11739mail-abuse.blacklist.jippg.org
11393countries.blackholes.us (result 127.7.9.2 = Turkey)
9762dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
9622no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
9496sbl.csma.biz
8934bl.csma.biz
8185countries.blackholes.us (result 127.0.7.6 = Brazil)
7925ips.backscatterer.org
7150countries.blackholes.us (result 127.6.4.3 = Russia)
6265countries.blackholes.us (result 127.1.5.6 = China)
6250rmst.dnsbl.net.au
6204korea.services.net
5713countries.blackholes.us (result 127.4.1.0 = Korea)
4774dnsbl.njabl.org (union of all results)
4755list.dnswl.org (not a blacklist!)
4602blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
4569dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3760countries.blackholes.us (result 127.0.3.2 = Argentina)
2950countries.blackholes.us (result 127.7.6.4 = Thailand)
2804dnsbl.ahbl.org (union of all results)
2651dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2600countries.blackholes.us (result 127.4.8.4 = Mexico)
2384spamsources.fabel.dk
2174hostkarma.junkemailfilter.com (result 127.0.0.1 = whitelisted)
1830dnsbl.tqmcube.com (result 127.0.0.5 = China)
1815countries.blackholes.us (result 127.3.9.2 = Japan)
1316dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
1270zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1270xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1270sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1066aspews.ext.sorbs.net
1022blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
1005countries.blackholes.us (result 127.4.5.8 = Malaysia)
938no-more-funn.moensted.dk (result 127.0.0.9 = misc)
886probes.dnsbl.net.au
829countries.blackholes.us (result 127.1.5.8 = Taiwan)
704hostkarma.junkemailfilter.com (result 127.0.0.4 = spam source aspirant)
552countries.blackholes.us (result 127.3.4.4 = Hong Kong)
445zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
445sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
445sbl.spamhaus.org
398bl.deadbeef.com
362countries.blackholes.us (result 127.7.0.2 = Singapore)
360no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
322dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
299dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
231work.drbl.croco.net
175no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
169query.bondedsender.org (not a blacklist!)
168accredit.habeas.com (not a blacklist!)
156iadb2.isipp.com (not a blacklist!)
147iadb.isipp.com (not a blacklist!)
120dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
118multi.surbl.org
116multihop.dsbl.org
110hostkarma.junkemailfilter.com (result 127.0.0.3 = mix of spam and nonspam)
106dnsbl.ahbl.org (result 127.0.0.4 = spam source)
103dnsbl.njabl.org (result 127.0.0.4 = spam source)
102dnsbl.njabl.org (result 127.0.0.2 = open relay)
58dnsbl.sorbs.net (result 127.0.0.6 = spam source)
48blackholes.uceb.org (union of all results)
46relays.nether.net
46exemptions.ahbl.org (not a blacklist!)
43multi.uribl.com (result 127.0.0.2 = spam resource)
43multi.uribl.com (union of all results)
41blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
37rdts.dnsbl.net.au
32countries.blackholes.us (result 127.5.6.6 = Nigeria)
28blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
26dnsbl.ahbl.org (result 127.0.0.15 = open relay)
23spam.wytnij.to
21blackholes.uceb.org (result 127.0.0.2 = open relay)
19blackholes.uceb.org (result 127.0.0.3 = spam source)
15blackholes.brainerd.net
13spamguard.leadmon.net (union of all results)
10ohps.dnsbl.net.au
9blackholes.uceb.org (result 127.0.0.6 = spam haven)
8dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
6spamguard.leadmon.net (result 127.0.0.8 = open proxy)
5ricn.dnsbl.net.au
5dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
4spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
4dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
3blackholes.uceb.org (result 127.0.0.5 = dialup)
3dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
3spamguard.leadmon.net (result 127.0.0.3 = spam source)
2spamsites.dnsbl.net.au
2osrs.dnsbl.net.au
2no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
2dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
1blackholes.uceb.org (result 127.0.0.4 = spam source network)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
1dob.sibl.support-intelligence.net
1dnsbl.ahbl.org (result 127.0.0.11 = no postmaster or abuse e-mail)
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)


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

HitsDNS Zone
221416(total number of IP addresses whose names were tested, including 468 at SDSC)
140420(union of all domain zones)
121397l1.apews.org
89417rddn.dnsbl.net.au
89051abuse.rfc-ignorant.org
54494whois.rfc-ignorant.org (union of all results)
54224dynamic.rhs.mailpolice.com
34896whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
19598whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
9434webmail.rhs.mailpolice.com
750multi.surbl.org
653multi.uribl.com (union of all results)
652multi.uribl.com (result 127.0.0.2 = spam resource)
587adv.rhs.mailpolice.com
111bl.deadbeef.com
107postmaster.rfc-ignorant.org
94dob.sibl.support-intelligence.net
86bogusmx.rfc-ignorant.org
86rhsbl.ahbl.org
83dsn.rfc-ignorant.org (zone not intended for this use)
74bulk.rhs.mailpolice.com
27rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
27rhsbl.sorbs.net (union of all results)
17porn.rhs.mailpolice.com
2blackhole.securitysage.com
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
154903(total number of domains tested, including 418 at SDSC)
36167(union of all domain zones)
20790whois.rfc-ignorant.org (union of all results)
20126whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
6256bogusmx.rfc-ignorant.org
4441abuse.rfc-ignorant.org
2422multi.surbl.org
2173multi.uribl.com (union of all results)
2121multi.uribl.com (result 127.0.0.2 = spam resource)
1781l1.apews.org
1630postmaster.rfc-ignorant.org
1351webmail.rhs.mailpolice.com
803dsn.rfc-ignorant.org
689porn.rhs.mailpolice.com
664whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
284rhsbl.ahbl.org
268bulk.rhs.mailpolice.com
228adv.rhs.mailpolice.com
153blackhole.securitysage.com
101dob.sibl.support-intelligence.net
91rddn.dnsbl.net.au (zone not intended for this use)
76dynamic.rhs.mailpolice.com
62rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
62rhsbl.sorbs.net (union of all results)
50multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
13ex.dnsbl.org
2multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2bl.deadbeef.com
1fraud.rhs.mailpolice.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 25 January 2008.