Blacklists Compared

17 March 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 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.

HitsDNS Zone
127398(total number of IP addresses tested, including 585 at SDSC)
119199(union of most IP zones)
98075t1.dnsbl.net.au
95752zen.spamhaus.org (union of all results)
73306sbl-xbl.spamhaus.org (union of all results)
72996dnsbl.sorbs.net (union of all results)
72603xbl.spamhaus.org (union of all results)
72183cbl.abuseat.org
72142xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
72139zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
72137sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
71358no-more-funn.moensted.dk (union of all results)
62225dnsbl.tqmcube.com (union of all results)
60421pbl.spamhaus.org (union of all results)
60419dynablock.njabl.org
60219blackholes.five-ten-sg.com (union of all results)
56690zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
56690pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
55488blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
54939dnsbl.sorbs.net (result 127.0.0.10 = dialup)
54131psbl.surriel.com
47576no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
36659dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
29011dnsbl-1.uceprotect.net
28084l2.apews.dnsbl.uceprotect.net
26387dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
20085bl.spamcop.net
15969no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
14278dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
13253cn-kr.blackholes.us (result 127.0.0.2 = China)
13253cn-kr.blackholes.us (union of all results)
12135unconfirmed.dsbl.org
12043list.dsbl.org
12031dsbl.dnsbl.net.au
11056dnsbl-2.uceprotect.net
10648dnsbl.tqmcube.com (result 127.0.0.5 = China)
8337china.blackholes.us
8184ix.dnsbl.manitu.net
7855unsure.nether.net
7824no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
7684mail-abuse.blacklist.jippg.org
7419korea.services.net
7387dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
6505blacklist.spambag.org
5431tr.countries.nerd.dk
5022ubl.unsubscore.com
4731korea.blackholes.us
4214dnsbl.njabl.org (union of all results)
3825turkey.blackholes.us
3823dnsbl.njabl.org (result 127.0.0.9 = open proxy)
3732zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
3732pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
3611blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
2790spamsources.fabel.dk
2553dnsbl.ahbl.org (union of all results)
2523dnsbl.sorbs.net (result 127.0.0.6 = spam source)
2501dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2468bl.spamcannibal.org
2430rmst.dnsbl.net.au
2161russia.blackholes.us
2127dnsbl-3.uceprotect.net
1977zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1977xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1977sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1629brazil.blackholes.us
1507list.dnswl.org (not a blacklist!)
1227probes.dnsbl.net.au
1042japan.blackholes.us
995blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
980taiwan.blackholes.us
871zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
871sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
871sbl.spamhaus.org
772dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
763thailand.blackholes.us
693malaysia.blackholes.us
653bl.csma.biz
604dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
571argentina.blackholes.us
528blackholes.uceb.org (union of all results)
499blackholes.uceb.org (result 127.0.0.6 = spam haven)
303mexico.blackholes.us
245blackholes.uceb.org (result 127.0.0.3 = spam source)
238hongkong.blackholes.us
236no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
212dnsbl.njabl.org (result 127.0.0.4 = spam source)
202query.bondedsender.org (not a blacklist!)
201singapore.blackholes.us
194no-more-funn.moensted.dk (result 127.0.0.9 = misc)
179dnsbl.njabl.org (result 127.0.0.2 = open relay)
136work.drbl.croco.net
133iadb2.isipp.com (not a blacklist!)
133iadb.isipp.com (not a blacklist!)
131accredit.habeas.com (not a blacklist!)
97spam.wytnij.to
94bl.deadbeef.com
76flowgoaway.com
70blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
68multihop.dsbl.org
52blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
51dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
38dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
34spamguard.leadmon.net (union of all results)
31spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
27ohps.dnsbl.net.au
24relays.nether.net
21tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
21tor.dnsbl.sectoor.de (union of all results)
19blackholes.uceb.org (result 127.0.0.5 = dialup)
17multi.surbl.org
14exemptions.ahbl.org (not a blacklist!)
13osps.dnsbl.net.au
12nigeria.blackholes.us
11rdts.dnsbl.net.au
9dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
8osrs.dnsbl.net.au
7owps.dnsbl.net.au
7dnsbl.ahbl.org (result 127.0.0.15 = open relay)
6blackholes.brainerd.net
3spamguard.leadmon.net (result 127.0.0.3 = spam source)
2multi.uribl.com (result 127.0.0.2 = spam resource)
2blackholes.uceb.org (result 127.0.0.2 = open relay)
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2dnsbl.sorbs.net (result 127.0.0.5 = open relay)
2omrs.dnsbl.net.au
2blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
2multi.uribl.com (union of all results)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
1blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)


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

HitsDNS Zone
127398(total number of IP addresses whose names were tested, including 585 at SDSC)
71632(union of all domain zones)
49802rddn.dnsbl.net.au
45845abuse.rfc-ignorant.org
34840l1.apews.rhsbl.uceprotect.net
34551dynamic.rhs.mailpolice.com
24784whois.rfc-ignorant.org (union of all results)
13172whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
11612whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
4205webmail.rhs.mailpolice.com
568postmaster.rfc-ignorant.org
537adv.rhs.mailpolice.com
388multi.surbl.org
223multi.uribl.com (union of all results)
222multi.uribl.com (result 127.0.0.2 = spam resource)
155rhsbl.ahbl.org
139bl.deadbeef.com
107bulk.rhs.mailpolice.com
92rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
92rhsbl.sorbs.net (union of all results)
87dsn.rfc-ignorant.org (zone not intended for this use)
84bogusmx.rfc-ignorant.org
11porn.rhs.mailpolice.com
1multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
1blackhole.securitysage.com


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

HitsDNS Zone
63219(total number of domains tested, including 576 at SDSC)
12631(union of all domain zones)
4898whois.rfc-ignorant.org (union of all results)
4326whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3583abuse.rfc-ignorant.org
1969multi.surbl.org
1556postmaster.rfc-ignorant.org
1480multi.uribl.com (union of all results)
1427multi.uribl.com (result 127.0.0.2 = spam resource)
1264webmail.rhs.mailpolice.com
900bogusmx.rfc-ignorant.org
727dsn.rfc-ignorant.org
572whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
289rhsbl.ahbl.org
246l1.apews.rhsbl.uceprotect.net
240porn.rhs.mailpolice.com
235bulk.rhs.mailpolice.com
184adv.rhs.mailpolice.com
135blackhole.securitysage.com
74rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
74rhsbl.sorbs.net (union of all results)
45multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
27rddn.dnsbl.net.au (zone not intended for this use)
14ex.dnsbl.org
11dynamic.rhs.mailpolice.com
8multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
3bl.deadbeef.com
2fraud.rhs.mailpolice.com
1cart00ney.surriel.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 22 March 2007.