Blacklists Compared

2 June 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
104507(total number of IP addresses tested, including 484 at SDSC)
96082(union of most IP zones)
76163zen.spamhaus.org (union of all results)
74462t1.dnsbl.net.au
57002sbl-xbl.spamhaus.org (union of all results)
56315xbl.spamhaus.org (union of all results)
56028cbl.abuseat.org
56006xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
56003zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
56000sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
55899dnsbl.sorbs.net (union of all results)
53209dynablock.njabl.org
53209pbl.spamhaus.org (union of all results)
51884no-more-funn.moensted.dk (union of all results)
51592dnsbl.tqmcube.com (union of all results)
47646zen.spamhaus.org (result 127.0.0.11 = Spamhaus PBL, Spamhaus entry)
47646pbl.spamhaus.org (result 127.0.0.11 = Spamhaus entry)
44605blackholes.five-ten-sg.com (union of all results)
42449dnsbl.sorbs.net (result 127.0.0.10 = dialup)
40294psbl.surriel.com
39825blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
38241l2.apews.dnsbl.uceprotect.net
34520no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
34039dnsbl-1.uceprotect.net
33421dnsbl-2.uceprotect.net
30870dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
18330dnsbl-3.uceprotect.net
16884dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
16539bl.spamcop.net
15451ubl.unsubscore.com
13198no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
12684sbl.csma.biz
12589db.wpbl.info
11494cn-kr.blackholes.us (result 127.0.0.2 = China)
11494cn-kr.blackholes.us (union of all results)
11447dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
10430unconfirmed.dsbl.org
10326dsbl.dnsbl.net.au
10321list.dsbl.org
8870dnsbl.tqmcube.com (result 127.0.0.5 = China)
7385china.blackholes.us
5816korea.services.net
5700dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
5567zen.spamhaus.org (result 127.0.0.10 = Spamhaus PBL, ISP contributed)
5567pbl.spamhaus.org (result 127.0.0.10 = ISP contributed)
5305mail-abuse.blacklist.jippg.org
5048bl.csma.biz
4712ix.dnsbl.manitu.net
4236korea.blackholes.us
3856no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
3742combined-hib.dnsiplists.completewhois.com (union of all results)
3732combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
3646blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
3347tr.countries.nerd.dk
3210dnsbl.sorbs.net (result 127.0.0.6 = spam source)
3063turkey.blackholes.us
2809dnsbl.njabl.org (union of all results)
2686list.dnswl.org (not a blacklist!)
2602dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2487bl.spamcannibal.org
2373brazil.blackholes.us
2167spamsources.fabel.dk
1943russia.blackholes.us
1866dnsbl.ahbl.org (union of all results)
1734dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1223probes.dnsbl.net.au
1097zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1097xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1097sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
985argentina.blackholes.us
975blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
962japan.blackholes.us
872zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
872sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
872sbl.spamhaus.org
795taiwan.blackholes.us
687thailand.blackholes.us
531mexico.blackholes.us
458malaysia.blackholes.us
396dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
316hongkong.blackholes.us
298dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
263no-more-funn.moensted.dk (result 127.0.0.9 = misc)
178blackholes.uceb.org (union of all results)
168no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
165singapore.blackholes.us
157work.drbl.croco.net
144query.bondedsender.org (not a blacklist!)
142blackholes.uceb.org (result 127.0.0.6 = spam haven)
141iadb2.isipp.com (not a blacklist!)
141iadb.isipp.com (not a blacklist!)
126bl.deadbeef.com
122accredit.habeas.com (not a blacklist!)
120dnsbl.njabl.org (result 127.0.0.4 = spam source)
95blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
87dnsbl.njabl.org (result 127.0.0.2 = open relay)
83spam.wytnij.to
83dnsbl.antispam.or.id
78dnsbl.ahbl.org (result 127.0.0.4 = spam source)
77blackholes.uceb.org (result 127.0.0.3 = spam source)
74multihop.dsbl.org
56blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
42dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
41tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
41tor.dnsbl.sectoor.de (union of all results)
32dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
31relays.nether.net
21blackholes.uceb.org (result 127.0.0.5 = dialup)
18exemptions.ahbl.org (not a blacklist!)
14spamguard.leadmon.net (union of all results)
13multi.surbl.org
12spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
12dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
10combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
9nigeria.blackholes.us
8rdts.dnsbl.net.au
8dnsbl.ahbl.org (result 127.0.0.15 = open relay)
7blackholes.uceb.org (result 127.0.0.2 = open relay)
5blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
3multi.uribl.com (result 127.0.0.2 = spam resource)
3multi.uribl.com (union of all results)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2blackholes.brainerd.net
2dnsbl.ahbl.org (result 127.0.0.20 = blog/wiki/comment spam source)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1dnsbl.sorbs.net (result 127.0.0.5 = open relay)
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)
1blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
1blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
1dnsbl.ahbl.org (result 127.0.0.18 = virus source)


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

HitsDNS Zone
104507(total number of IP addresses whose names were tested, including 484 at SDSC)
65508(union of all domain zones)
55601l1.apews.rhsbl.uceprotect.net
43210rddn.dnsbl.net.au
40446abuse.rfc-ignorant.org
29368dynamic.rhs.mailpolice.com
23414whois.rfc-ignorant.org (union of all results)
13624whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
9790whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
6070webmail.rhs.mailpolice.com
689multi.surbl.org
689multi.uribl.com (union of all results)
685multi.uribl.com (result 127.0.0.2 = spam resource)
461adv.rhs.mailpolice.com
293postmaster.rfc-ignorant.org
131rhsbl.ahbl.org
70dsn.rfc-ignorant.org (zone not intended for this use)
70bogusmx.rfc-ignorant.org
57bulk.rhs.mailpolice.com
30rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
30rhsbl.sorbs.net (union of all results)
12porn.rhs.mailpolice.com
8bl.deadbeef.com
3multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
3blackhole.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
55568(total number of domains tested, including 450 at SDSC)
12724(union of all domain zones)
4669whois.rfc-ignorant.org (union of all results)
4179whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2827abuse.rfc-ignorant.org
2484multi.surbl.org
2315multi.uribl.com (union of all results)
2267multi.uribl.com (result 127.0.0.2 = spam resource)
1491l1.apews.rhsbl.uceprotect.net
1351postmaster.rfc-ignorant.org
1325webmail.rhs.mailpolice.com
1011bogusmx.rfc-ignorant.org
739dsn.rfc-ignorant.org
490whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
227rhsbl.ahbl.org
213porn.rhs.mailpolice.com
176bulk.rhs.mailpolice.com
154adv.rhs.mailpolice.com
144blackhole.securitysage.com
101rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
101rhsbl.sorbs.net (union of all results)
48rddn.dnsbl.net.au (zone not intended for this use)
44multi.uribl.com (result 127.0.0.4 = opt-out spam resource)
20dynamic.rhs.mailpolice.com
13ex.dnsbl.org
4multi.uribl.com (result 127.0.0.8 = new domain or concealed contact)
2bl.deadbeef.com
1fraud.rhs.mailpolice.com
1cart00ney.surriel.com


This document was last updated by Jeff Makey <jeff@sdsc.edu> on 8 June 2007.