Blacklists Compared

23 September 2006

[ 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 and query.bondedsender.org zones because they are not blacklists, and because it is too aggressive to be widely useful the block.blars.org zone is also excluded.

HitsDNS Zone
114561(total number of IP addresses tested, including 536 at SDSC)
106706(union of most IP zones)
84827t1.dnsbl.net.au
71196block.blars.org
65004dnsbl.sorbs.net (union of all results)
61009zen.spamhaus.org (union of all results)
61007sbl-xbl.spamhaus.org (union of all results)
60385xbl.spamhaus.org (union of all results)
59163cbl.abuseat.org
59111zen.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
59109sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
59106xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
55214blackholes.five-ten-sg.com (union of all results)
53773blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
53236dnsbl.sorbs.net (result 127.0.0.10 = dialup)
49539dnsbl.tqmcube.com (union of all results)
40899no-more-funn.moensted.dk (union of all results)
38081dynablock.njabl.org
31386dnsbl-2.uceprotect.net
27836dnsbl-1.uceprotect.net
24923dnsbl.tqmcube.com (result 127.0.0.2 = dialup)
24000no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
20271psbl.surriel.com
18282bl.spamcop.net
16755cn-kr.blackholes.us (result 127.0.0.2 = China)
16755cn-kr.blackholes.us (union of all results)
13434ubl.unsubscore.com
13164no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
11642unconfirmed.dsbl.org
11525list.dsbl.org
11522dsbl.dnsbl.net.au
10938china.blackholes.us
10895dnsbl.tqmcube.com (result 127.0.0.5 = China)
10893dnsbl.sorbs.net (result 127.0.0.7 = hacked/vulnerable)
10257blacklist.spambag.org
10170bl.csma.biz
8252dnsbl.tqmcube.com (result 127.0.0.3 = spam source)
7518wpbl.dnsbl.net.au
7207combined-hib.dnsiplists.completewhois.com (union of all results)
7196combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
6708dnsbl.njabl.org (union of all results)
5809korea.blackholes.us
5471dnsbl.tqmcube.com (result 127.0.0.4 = South Korea)
5324dnsbl.sorbs.net (result 127.0.0.6 = spam source)
5037dnsbl.njabl.org (result 127.0.0.9 = open proxy)
4738brazil.blackholes.us
3947unsure.nether.net
3738dnsbl.ahbl.org (union of all results)
3541rmst.dnsbl.net.au
3447no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
3434zen.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
3434xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
3434sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
3425dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
3276tr.countries.nerd.dk
3267turkey.blackholes.us
3216mail-abuse.blacklist.jippg.org
3075spamsources.fabel.dk
2240dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
2184argentina.blackholes.us
1774probes.dnsbl.net.au
1744dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1598taiwan.blackholes.us
1478dnsbl-3.uceprotect.net
1467korea.services.net
1446dnsbl.njabl.org (result 127.0.0.3 = dialup)
1352japan.blackholes.us
1097russia.blackholes.us
961mexico.blackholes.us
843thailand.blackholes.us
831blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
782sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
782sbl.spamhaus.org
779zen.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
599no-more-funn.moensted.dk (result 127.0.0.9 = misc)
590l1.spews.dnsbl.sorbs.net
587malaysia.blackholes.us
557l2.spews.dnsbl.sorbs.net
363singapore.blackholes.us
300blackholes.uceb.org (union of all results)
298dnsbl.ahbl.org (result 127.0.0.4 = spam source)
288blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
278blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
265no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
260hongkong.blackholes.us
256blackholes.uceb.org (result 127.0.0.3 = spam source)
230sbl.csma.biz
186spam.wytnij.to
182work.drbl.croco.net
154dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
153dnsbl.njabl.org (result 127.0.0.4 = spam source)
121query.bondedsender.org (not a blacklist!)
112dnsbl.antispam.or.id
92multihop.dsbl.org
83dnsbl.njabl.org (result 127.0.0.2 = open relay)
76ohps.dnsbl.net.au
76dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
70flowgoaway.com
67relays.ordb.org
44ricn.dnsbl.net.au
38blackholes.uceb.org (result 127.0.0.5 = dialup)
38blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
27relays.nether.net
24rdts.dnsbl.net.au
23tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
23tor.dnsbl.sectoor.de (union of all results)
20osps.dnsbl.net.au
16multi.surbl.org
15nigeria.blackholes.us
15bl.spamcannibal.org
14dnsbl.ahbl.org (result 127.0.0.15 = open relay)
14exemptions.ahbl.org (not a blacklist!)
14spamguard.leadmon.net (union of all results)
12dnsbl.sorbs.net (result 127.0.0.5 = open relay)
11hil.habeas.com
11combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
9spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
8dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
6blackholes.uceb.org (result 127.0.0.2 = open relay)
5osrs.dnsbl.net.au
4blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
4dnsbl.ahbl.org (result 127.0.0.10 = shoot on sight spammer)
3spamguard.leadmon.net (result 127.0.0.3 = spam source)
3bl.deadbeef.com
3blackholes.brainerd.net
2dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
2owps.dnsbl.net.au
2spamguard.leadmon.net (result 127.0.0.8 = open proxy)
2blackholes.five-ten-sg.com (result 127.0.0.11 = TCPA violator)
1no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
1no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
1no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)

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

HitsDNS Zone
114561(total number of IP addresses whose names were tested, including 536 at SDSC)
69197(union of all domain zones)
49368rddn.dnsbl.net.au
48869abuse.rfc-ignorant.org
34735whois.rfc-ignorant.org (union of all results)
34696dynamic.rhs.mailpolice.com
23617whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
11119whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3377webmail.rhs.mailpolice.com
516adv.rhs.mailpolice.com
467postmaster.rfc-ignorant.org
389rhsbl.ahbl.org
302multi.surbl.org
92bogusmx.rfc-ignorant.org
91dsn.rfc-ignorant.org (zone not intended for this use)
90bulk.rhs.mailpolice.com
3porn.rhs.mailpolice.com

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

HitsDNS Zone
65604(total number of domains tested, including 461 at SDSC)
12519(union of all domain zones)
4508whois.rfc-ignorant.org (union of all results)
3808whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
3793abuse.rfc-ignorant.org
2126multi.surbl.org
1662webmail.rhs.mailpolice.com
1526postmaster.rfc-ignorant.org
1060dsn.rfc-ignorant.org
914bogusmx.rfc-ignorant.org
700whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
640rhsbl.ahbl.org
301porn.rhs.mailpolice.com
240bulk.rhs.mailpolice.com
207adv.rhs.mailpolice.com
158blackhole.securitysage.com
56rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
56rhsbl.sorbs.net (union of all results)
24rddn.dnsbl.net.au (zone not intended for this use)
17ex.dnsbl.org
8dynamic.rhs.mailpolice.com
1cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 29 September 2006.