Blacklists Compared

6 August 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
43103(total number of IP addresses tested, including 403 at SDSC)
37051(union of most IP zones)
31369block.blars.org
24815t1.dnsbl.net.au
20277dnsbl.sorbs.net (union of all results)
17149sbl-xbl.spamhaus.org (union of all results)
15788xbl.spamhaus.org (union of all results)
15018cbl.abuseat.org
14939xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
14922sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
13657dnsbl.sorbs.net (result 127.0.0.10 = dialup)
11785cn-kr.blackholes.us (union of all results)
10377dynablock.njabl.org
9547rmst.dnsbl.net.au
9074no-more-funn.moensted.dk (union of all results)
8590blackholes.five-ten-sg.com (union of all results)
8250unconfirmed.dsbl.org
8164list.dsbl.org
8162blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
8161dsbl.dnsbl.net.au
8146cn-kr.blackholes.us (result 127.0.0.2 = China)
8146china.blackholes.us
6394sbl.csma.biz
5359combined-hib.dnsiplists.completewhois.com (union of all results)
5351combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
4964blacklist.spambag.org
4786dnsbl.sorbs.net (result 127.0.0.6 = spam source)
4618no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
4374bl.spamcop.net
3816l2.spews.dnsbl.sorbs.net
3754korea.services.net
3639cn-kr.blackholes.us (result 127.0.0.3 = Korea)
3639korea.blackholes.us
3318dnsbl.njabl.org (union of all results)
3245spews.dnsbl.net.au
3242l1.spews.dnsbl.sorbs.net
3227bl.csma.biz
2860dnsbl.ahbl.org (union of all results)
2553spamsources.fabel.dk
2391dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2223wpbl.dnsbl.net.au
2168dnsbl.rangers.eu.org (union of all results)
2137dnsbl.regedit64.net
2034dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
1934no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1910dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
1898no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
1536unsure.nether.net
1489ricn.dnsbl.net.au
1476sbl.spamhaus.org
1473brazil.blackholes.us
1472sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1440opm.blitzed.org
1432sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1429xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1219dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
1201bl.spamcannibal.org
1176dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1150xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1150sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1142dnsbl.antispam.or.id
1021comcast.blackholes.us
1015japan.blackholes.us
922dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
885taiwan.blackholes.us
852spam.wytnij.to
814dnsbl.ahbl.org (result 127.0.0.4 = spam source)
684dnsbl.njabl.org (result 127.0.0.3 = dialup)
598hongkong.blackholes.us
584probes.dnsbl.net.au
471no-more-funn.moensted.dk (result 127.0.0.9 = misc)
466rr.blackholes.us
461russia.blackholes.us
424tr.countries.nerd.dk
423turkey.blackholes.us
397argentina.blackholes.us
320charter.blackholes.us
243interbusiness.blackholes.us
235mail-abuse.blacklist.jippg.org
234blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
232cw.blackholes.us
189dnsbl.njabl.org (result 127.0.0.2 = open relay)
188thailand.blackholes.us
183query.bondedsender.org (not a blacklist!)
182singapore.blackholes.us
180dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
169malaysia.blackholes.us
168no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
153qwest.blackholes.us
149blackholes.intersil.net
132internap.blackholes.us
126psbl.surriel.com
124dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
118blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
114level3.blackholes.us
113ohps.dnsbl.net.au
104verio.blackholes.us
102relays.ordb.org
87dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
86bellsouth.blackholes.us
82multihop.dsbl.org
78flowgoaway.com
77cybercon.blackholes.us
75xo.blackholes.us
72dnsbl.njabl.org (result 127.0.0.4 = spam source)
69he.blackholes.us
66above.blackholes.us
65dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
63wanadoo-fr.blackholes.us
43osps.dnsbl.net.au
36telstra.blackholes.us
33osrs.dnsbl.net.au
33blackholes.brainerd.net
31inflow.blackholes.us
31covad.blackholes.us
30blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
30exemptions.ahbl.org (not a blacklist!)
27blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
25yipes.blackholes.us
22rdts.dnsbl.net.au
22relays.nether.net
22blackholes.uceb.org (union of all results)
20rogers.blackholes.us
18eli.blackholes.us
17a2000.blackholes.us
16broadwing.blackholes.us
15infolink.blackholes.us
13ciberlynx.blackholes.us
12dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
11rackspace.blackholes.us
11spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
11hil.habeas.com
11dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
11spamguard.leadmon.net (union of all results)
10nigeria.blackholes.us
10burst.blackholes.us
10blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
8affinity.blackholes.us
8blackholes.uceb.org (result 127.0.0.3 = spam source)
8blackholes.uceb.org (result 127.0.0.2 = open relay)
8combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
7olm.blackholes.us
7epoch.blackholes.us
7blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
6pajo.blackholes.us
6navisite.blackholes.us
5dnsbl.sorbs.net (result 127.0.0.5 = open relay)
5owps.dnsbl.net.au
5dnsbl.ahbl.org (result 127.0.0.15 = open relay)
3blackholes.uceb.org (result 127.0.0.6 = spam haven)
2blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
2dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
2dialup.blacklist.jippg.org (union of all results)
1blackholes.uceb.org (result 127.0.0.5 = dialup)
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
1blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
1bl.deadbeef.com
1dnsbl.ahbl.org (result 127.0.0.14 = denial-of-service attacker)

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
43103(total number of IP addresses whose names were tested, including 403 at SDSC)
20117(union of all domain zones)
16088abuse.rfc-ignorant.org
9713rddn.dnsbl.net.au
9435whois.rfc-ignorant.org (union of all results)
7068whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
5313dynamic.rhs.mailpolice.com
2373whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1552webmail.rhs.mailpolice.com
599bl.deadbeef.com
525rhsbl.ahbl.org
377adv.rhs.mailpolice.com
363bulk.rhs.mailpolice.com
114postmaster.rfc-ignorant.org
22dsn.rfc-ignorant.org (zone not intended for this use)
15bogusmx.rfc-ignorant.org
11porn.rhs.mailpolice.com
2blackhole.securitysage.com

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

HitsDNS Zone
23114(total number of domains tested, including 352 at SDSC)
6225(union of all domain zones)
2276whois.rfc-ignorant.org (union of all results)
2056abuse.rfc-ignorant.org
1756whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1194postmaster.rfc-ignorant.org
1068rhsbl.ahbl.org
1037webmail.rhs.mailpolice.com
864dsn.rfc-ignorant.org
520whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
513bogusmx.rfc-ignorant.org
376bulk.rhs.mailpolice.com
189blackhole.securitysage.com
187adv.rhs.mailpolice.com
126porn.rhs.mailpolice.com
115bl.deadbeef.com
51rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
51rhsbl.sorbs.net (union of all results)
22rddn.dnsbl.net.au (zone not intended for this use)
13ex.dnsbl.org
5dynamic.rhs.mailpolice.com
2cart00ney.surriel.com
1fraud.rhs.mailpolice.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 19 August 2005.