Blacklists Compared

31 December 2005

[ 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
58086(total number of IP addresses tested, including 444 at SDSC)
52863(union of most IP zones)
37139block.blars.org
33620dnsbl.sorbs.net (union of all results)
32022t1.dnsbl.net.au
28503blackholes.five-ten-sg.com (union of all results)
27614dnsbl.sorbs.net (result 127.0.0.10 = dialup)
27489blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
27262sbl-xbl.spamhaus.org (union of all results)
25311xbl.spamhaus.org (union of all results)
24544sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
24538xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
24481cbl.abuseat.org
20222psbl.surriel.com
19332dynablock.njabl.org
15644no-more-funn.moensted.dk (union of all results)
10025cn-kr.blackholes.us (result 127.0.0.2 = China)
10025cn-kr.blackholes.us (union of all results)
9084unconfirmed.dsbl.org
9024list.dsbl.org
9019dsbl.dnsbl.net.au
8308sbl.csma.biz
8297no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
8131blacklist.spambag.org
6801bl.spamcop.net
6449china.blackholes.us
5292l2.spews.dnsbl.sorbs.net
4995combined-hib.dnsiplists.completewhois.com (union of all results)
4985combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
4734l1.spews.dnsbl.sorbs.net
4048unsure.nether.net
3930dnsbl.sorbs.net (result 127.0.0.6 = spam source)
3825bl.csma.biz
3576korea.blackholes.us
3570dnsbl.rangers.eu.org (union of all results)
3567wpbl.dnsbl.net.au
3562korea.services.net
3520no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
3380no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
3292dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
3244dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
3162dnsbl.njabl.org (union of all results)
2838dnsbl.ahbl.org (union of all results)
2760rmst.dnsbl.net.au
2518dnsbl.regedit64.net
2502ricn.dnsbl.net.au
2308brazil.blackholes.us
2272sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
2272sbl.spamhaus.org
2217spamsources.fabel.dk
2111dnsbl.njabl.org (result 127.0.0.9 = open proxy)
1807dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1727japan.blackholes.us
1390russia.blackholes.us
1241dnsbl.antispam.or.id
1161spam.wytnij.to
1137opm.blitzed.org
1135xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1134sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1100dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1028dnsbl.ahbl.org (result 127.0.0.4 = spam source)
987probes.dnsbl.net.au
941dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
939xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
939sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
873spews.dnsbl.net.au
845taiwan.blackholes.us
829bl.spamcannibal.org
808dnsbl.njabl.org (result 127.0.0.3 = dialup)
742tr.countries.nerd.dk
737turkey.blackholes.us
500mexico.blackholes.us
498blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
478argentina.blackholes.us
464mail-abuse.blacklist.jippg.org
368hongkong.blackholes.us
337malaysia.blackholes.us
335blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
241no-more-funn.moensted.dk (result 127.0.0.9 = misc)
216no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
214singapore.blackholes.us
211thailand.blackholes.us
203dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
184query.bondedsender.org (not a blacklist!)
162blackholes.intersil.net
137relays.ordb.org
132blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
128dnsbl.njabl.org (result 127.0.0.2 = open relay)
125dnsbl.njabl.org (result 127.0.0.4 = spam source)
89dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
87flowgoaway.com
74ohps.dnsbl.net.au
59dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
51dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
48multihop.dsbl.org
36blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
25rdts.dnsbl.net.au
15osps.dnsbl.net.au
13dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
13relays.nether.net
12hil.habeas.com
12exemptions.ahbl.org (not a blacklist!)
12blackholes.uceb.org (union of all results)
11spamguard.leadmon.net (union of all results)
10combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
9osrs.dnsbl.net.au
9tor.dnsbl.sectoor.de (union of all results)
8tor.dnsbl.sectoor.de (result 127.0.0.2 = /24 contains a Tor server)
8blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
8blackholes.brainerd.net
7nigeria.blackholes.us
7dnsbl.sorbs.net (result 127.0.0.5 = open relay)
7spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
6dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
5blackholes.uceb.org (result 127.0.0.6 = spam haven)
5dnsbl.ahbl.org (result 127.0.0.15 = open relay)
4blackholes.uceb.org (result 127.0.0.2 = open relay)
4owps.dnsbl.net.au
4blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
3blackholes.uceb.org (result 127.0.0.3 = spam source)
3dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
3spamguard.leadmon.net (result 127.0.0.8 = open proxy)
2omrs.dnsbl.net.au
1tor.dnsbl.sectoor.de (result 127.0.0.1 = Tor server)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
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)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)

The blackholes.intersil.net zone "lists entrenched spammers, mainsleaze and mainsleaze wannabes who have pestered users at Intersil." The flowgoaway.com zone lists FloNetwork systems.

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

HitsDNS Zone
58086(total number of IP addresses whose names were tested, including 444 at SDSC)
34027(union of all domain zones)
23076abuse.rfc-ignorant.org
22803rddn.dnsbl.net.au
16159whois.rfc-ignorant.org (union of all results)
13007whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
10233dynamic.rhs.mailpolice.com
3152whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1948webmail.rhs.mailpolice.com
1201rhsbl.ahbl.org
682bl.deadbeef.com
461bulk.rhs.mailpolice.com
374adv.rhs.mailpolice.com
238postmaster.rfc-ignorant.org
98bogusmx.rfc-ignorant.org
89dsn.rfc-ignorant.org (zone not intended for this use)
5blackhole.securitysage.com
2porn.rhs.mailpolice.com

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

HitsDNS Zone
30947(total number of domains tested, including 415 at SDSC)
6796(union of all domain zones)
2354whois.rfc-ignorant.org (union of all results)
2088abuse.rfc-ignorant.org
1911whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1288rhsbl.ahbl.org
1076postmaster.rfc-ignorant.org
932webmail.rhs.mailpolice.com
774dsn.rfc-ignorant.org
501bogusmx.rfc-ignorant.org
468bulk.rhs.mailpolice.com
443whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
172adv.rhs.mailpolice.com
139bl.deadbeef.com
132porn.rhs.mailpolice.com
130blackhole.securitysage.com
35rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
35rhsbl.sorbs.net (union of all results)
23rddn.dnsbl.net.au (zone not intended for this use)
16ex.dnsbl.org
9dynamic.rhs.mailpolice.com
2cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 15 January 2006.