Blacklists Compared

23 July 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
45163(total number of IP addresses tested, including 469 at SDSC)
38179(union of most IP zones)
32500block.blars.org
24758t1.dnsbl.net.au
20708dnsbl.sorbs.net (union of all results)
16050sbl-xbl.spamhaus.org (union of all results)
14920dnsbl.sorbs.net (result 127.0.0.10 = dialup)
14459xbl.spamhaus.org (union of all results)
13520sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
13476xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
13281cbl.abuseat.org
11360rmst.dnsbl.net.au
11275dynablock.njabl.org
10233no-more-funn.moensted.dk (union of all results)
8554unconfirmed.dsbl.org
8464list.dsbl.org
8460dsbl.dnsbl.net.au
7818blackholes.five-ten-sg.com (union of all results)
7471blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
6860cn-kr.blackholes.us (union of all results)
6714sbl.csma.biz
6139combined-hib.dnsiplists.completewhois.com (union of all results)
6126combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
5209bl.spamcop.net
5050no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
4800korea.services.net
4798blacklist.spambag.org
3845l2.spews.dnsbl.sorbs.net
3756dnsbl.sorbs.net (result 127.0.0.6 = spam source)
3511cn-kr.blackholes.us (result 127.0.0.2 = China)
3511china.blackholes.us
3349cn-kr.blackholes.us (result 127.0.0.3 = Korea)
3349korea.blackholes.us
3324l1.spews.dnsbl.sorbs.net
3301dnsbl.njabl.org (union of all results)
3279bl.csma.biz
3231spews.dnsbl.net.au
2815dnsbl.ahbl.org (union of all results)
2720spamsources.fabel.dk
2701dnsbl.rangers.eu.org (union of all results)
2404dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
2366dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2358no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
2246dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2155no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
2146wpbl.dnsbl.net.au
2100ricn.dnsbl.net.au
2072psbl.surriel.com
1962dnsbl.regedit64.net
1680unsure.nether.net
1631sbl.spamhaus.org
1628sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1574xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1560sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1558opm.blitzed.org
1389comcast.blackholes.us
1377dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1234xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1229sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1225bl.spamcannibal.org
1090dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
1017dnsbl.antispam.or.id
964pdl.blackholes.us
920dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
842spam.wytnij.to
706dnsbl.njabl.org (result 127.0.0.3 = dialup)
645taiwan.blackholes.us
638japan.blackholes.us
558dnsbl.ahbl.org (result 127.0.0.4 = spam source)
553rr.blackholes.us
506no-more-funn.moensted.dk (result 127.0.0.9 = misc)
481probes.dnsbl.net.au
459charter.blackholes.us
377tr.countries.nerd.dk
255mail-abuse.blacklist.jippg.org
253mci.blackholes.us
217hongkong.blackholes.us
202dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
188blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
187no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
173query.bondedsender.org (not a blacklist!)
167qwest.blackholes.us
167blackholes.intersil.net
159dnsbl.njabl.org (result 127.0.0.2 = open relay)
151malaysia.blackholes.us
137thailand.blackholes.us
128cw.blackholes.us
124bellsouth.blackholes.us
108ohps.dnsbl.net.au
98relays.ordb.org
92dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
89blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
88russia.blackholes.us
87level3.blackholes.us
83dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
83flowgoaway.com
78multihop.dsbl.org
78dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
77dnsbl.njabl.org (result 127.0.0.4 = spam source)
74internap.blackholes.us
70cybercon.blackholes.us
54singapore.blackholes.us
51rogers.blackholes.us
48he.blackholes.us
46xo.blackholes.us
46osps.dnsbl.net.au
46osrs.dnsbl.net.au
43a2000.blackholes.us
34turkey.blackholes.us
34argentina.blackholes.us
33covad.blackholes.us
33exemptions.ahbl.org (not a blacklist!)
31interbusiness.blackholes.us
29blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
28inflow.blackholes.us
26rdts.dnsbl.net.au
25infolink.blackholes.us
25relays.nether.net
24blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
21above.blackholes.us
20blackholes.uceb.org (union of all results)
19spamguard.leadmon.net (union of all results)
18spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
14blackholes.brainerd.net
13broadwing.blackholes.us
13combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
12blackholes.uceb.org (result 127.0.0.2 = open relay)
12dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
11wanadoo-fr.blackholes.us
10yipes.blackholes.us
10dnsbl.sorbs.net (result 127.0.0.5 = open relay)
10dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
9rackspace.blackholes.us
7hil.habeas.com
7blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
6nigeria.blackholes.us
6burst.blackholes.us
6blackholes.uceb.org (result 127.0.0.3 = spam source)
6dialup.blacklist.jippg.org (union of all results)
5swbell.blackholes.us
5blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
5dnsbl.ahbl.org (result 127.0.0.15 = open relay)
4dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
3maxim.blackholes.us
3blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
2eli.blackholes.us
2blackholes.uceb.org (result 127.0.0.6 = spam haven)
2omrs.dnsbl.net.au
2dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
2blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1verio.blackholes.us
1telstra.blackholes.us
1olm.blackholes.us
1ciberlynx.blackholes.us
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1owps.dnsbl.net.au
1spamsites.dnsbl.net.au
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
1relays.bl.kundenserver.de
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)
1bl.deadbeef.com

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
45163(total number of IP addresses whose names were tested, including 469 at SDSC)
22342(union of all domain zones)
16985abuse.rfc-ignorant.org
10794rddn.dnsbl.net.au
8674whois.rfc-ignorant.org (union of all results)
6125whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
5924dynamic.rhs.mailpolice.com
2551whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1521webmail.rhs.mailpolice.com
707rhsbl.ahbl.org
591bl.deadbeef.com
479bulk.rhs.mailpolice.com
381adv.rhs.mailpolice.com
105postmaster.rfc-ignorant.org
11dsn.rfc-ignorant.org (zone not intended for this use)
7bogusmx.rfc-ignorant.org
3blackhole.securitysage.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
25903(total number of domains tested, including 435 at SDSC)
6456(union of all domain zones)
2530whois.rfc-ignorant.org (union of all results)
2097abuse.rfc-ignorant.org
1999whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1146postmaster.rfc-ignorant.org
1122webmail.rhs.mailpolice.com
834rhsbl.ahbl.org
809dsn.rfc-ignorant.org
531whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
487bogusmx.rfc-ignorant.org
419bulk.rhs.mailpolice.com
198adv.rhs.mailpolice.com
160blackhole.securitysage.com
129bl.deadbeef.com
97porn.rhs.mailpolice.com
59rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
59rhsbl.sorbs.net (union of all results)
46rddn.dnsbl.net.au (zone not intended for this use)
23dynamic.rhs.mailpolice.com
14ex.dnsbl.org
6cart00ney.surriel.com
1fraud.rhs.mailpolice.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 4 August 2005.