Blacklists Compared

16 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
44491(total number of IP addresses tested, including 402 at SDSC)
38547(union of most IP zones)
32292block.blars.org
25125t1.dnsbl.net.au
18909dnsbl.sorbs.net (union of all results)
15574sbl-xbl.spamhaus.org (union of all results)
14498dnsbl.sorbs.net (result 127.0.0.10 = dialup)
13966xbl.spamhaus.org (union of all results)
12772sbl-xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
12768xbl.spamhaus.org (result 127.0.0.4 = Composite Blocking List)
12551cbl.abuseat.org
11291rmst.dnsbl.net.au
11189cn-kr.blackholes.us (union of all results)
11053dynablock.njabl.org
10496no-more-funn.moensted.dk (union of all results)
9415unconfirmed.dsbl.org
9394list.dsbl.org
9393dsbl.dnsbl.net.au
8398blackholes.five-ten-sg.com (union of all results)
8046blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
7424sbl.csma.biz
6475cn-kr.blackholes.us (result 127.0.0.2 = China)
6475china.blackholes.us
6165combined-hib.dnsiplists.completewhois.com (union of all results)
6147combined-hib.dnsiplists.completewhois.com (result 127.0.0.4 = bad whois data)
5761no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
5607bl.spamcop.net
5229korea.services.net
5062blacklist.spambag.org
4714cn-kr.blackholes.us (result 127.0.0.3 = Korea)
4714korea.blackholes.us
3923l2.spews.dnsbl.sorbs.net
3756bl.csma.biz
3648dnsbl.njabl.org (union of all results)
3462l1.spews.dnsbl.sorbs.net
3227spews.dnsbl.net.au
3002spamsources.fabel.dk
2891dnsbl.ahbl.org (union of all results)
2718dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2521ricn.dnsbl.net.au
2406dnsbl.rangers.eu.org (union of all results)
2329dnsbl.ahbl.org (result 127.0.0.3 = open proxy)
2250no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
2168wpbl.dnsbl.net.au
2136dnsbl.rangers.eu.org (result 127.0.0.2 = dialup)
1964psbl.surriel.com
1960dnsbl.regedit64.net
1934sbl-xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1932xbl.spamhaus.org (result 127.0.0.6 = Blitzed Open Proxy Monitor List)
1930opm.blitzed.org
1848dnsbl.sorbs.net (result 127.0.0.6 = spam source)
1824no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
1695sbl-xbl.spamhaus.org (result 127.0.0.2 = Spamhaus SBL)
1688sbl.spamhaus.org
1575unsure.nether.net
1523sbl-xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1522xbl.spamhaus.org (result 127.0.0.5 = time-expired NJABL open proxy)
1425brazil.blackholes.us
1418dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
1355pdl.blackholes.us
1342comcast.blackholes.us
1252dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
1229bl.spamcannibal.org
1216dnsbl.antispam.or.id
1002japan.blackholes.us
982dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
841taiwan.blackholes.us
836spam.wytnij.to
660dnsbl.njabl.org (result 127.0.0.3 = dialup)
553dnsbl.ahbl.org (result 127.0.0.4 = spam source)
528russia.blackholes.us
506no-more-funn.moensted.dk (result 127.0.0.9 = misc)
498probes.dnsbl.net.au
494rr.blackholes.us
460hongkong.blackholes.us
453charter.blackholes.us
422mail-abuse.blacklist.jippg.org
387argentina.blackholes.us
328mexico.blackholes.us
316tr.countries.nerd.dk
309turkey.blackholes.us
303interbusiness.blackholes.us
237cw.blackholes.us
214thailand.blackholes.us
205dnsbl.njabl.org (result 127.0.0.2 = open relay)
195malaysia.blackholes.us
188blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
181query.bondedsender.org (not a blacklist!)
173dnsbl.rangers.eu.org (result 127.0.0.16 = spam haven)
172singapore.blackholes.us
170qwest.blackholes.us
170level3.blackholes.us
170no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
161blackholes.intersil.net
141mci.blackholes.us
139internap.blackholes.us
130bellsouth.blackholes.us
119dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
118ohps.dnsbl.net.au
116relays.ordb.org
116dnsbl.ahbl.org (result 127.0.0.7 = spam haven)
103verio.blackholes.us
100blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
85multihop.dsbl.org
82xo.blackholes.us
82flowgoaway.com
79dnsbl.rangers.eu.org (result 127.0.0.8 = spam source)
72cybercon.blackholes.us
72dnsbl.njabl.org (result 127.0.0.4 = spam source)
70above.blackholes.us
60he.blackholes.us
59osps.dnsbl.net.au
50wanadoo-fr.blackholes.us
44telstra.blackholes.us
43rogers.blackholes.us
35inflow.blackholes.us
34osrs.dnsbl.net.au
33a2000.blackholes.us
32blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
31exemptions.ahbl.org (not a blacklist!)
28covad.blackholes.us
28relays.nether.net
26eli.blackholes.us
25blackholes.uceb.org (union of all results)
24rdts.dnsbl.net.au
21broadwing.blackholes.us
18blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
18combined-hib.dnsiplists.completewhois.com (result 127.0.0.2 = unallocated IP address)
17dnsbl.rangers.eu.org (result 127.0.0.4 = virus notices)
16yipes.blackholes.us
16blackholes.brainerd.net
13maxim.blackholes.us
10rackspace.blackholes.us
10blackholes.uceb.org (result 127.0.0.2 = open relay)
9infolink.blackholes.us
8blackholes.uceb.org (result 127.0.0.6 = spam haven)
8dnsbl.ahbl.org (result 127.0.0.19 = open proxy test zone)
8dialup.blacklist.jippg.org (union of all results)
7swbell.blackholes.us
7nigeria.blackholes.us
7navisite.blackholes.us
7blackholes.uceb.org (result 127.0.0.3 = spam source)
7dnsbl.sorbs.net (result 127.0.0.5 = open relay)
7spamguard.leadmon.net (union of all results)
6burst.blackholes.us
6affinity.blackholes.us
6spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
6hil.habeas.com
5lauderdale.blackholes.us
5dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
5combined-hib.dnsiplists.completewhois.com (result 127.0.0.3 = hijacked network)
4epoch.blackholes.us
4ciberlynx.blackholes.us
4owps.dnsbl.net.au
4blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
4blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
3olm.blackholes.us
3dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
3blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
3blackholes.five-ten-sg.com (result 127.0.0.6 = open relay)
3dnsbl.ahbl.org (result 127.0.0.15 = open relay)
2pajo.blackholes.us
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1dnsbl.rangers.eu.org (result 127.0.0.32 = worm source)
1owfs.dnsbl.net.au
1spamguard.leadmon.net (result 127.0.0.3 = spam source)
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
44491(total number of IP addresses whose names were tested, including 402 at SDSC)
21252(union of all domain zones)
15981abuse.rfc-ignorant.org
10315rddn.dnsbl.net.au
8293whois.rfc-ignorant.org (union of all results)
5895whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
5540dynamic.rhs.mailpolice.com
2400whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
1464webmail.rhs.mailpolice.com
760rhsbl.ahbl.org
554bl.deadbeef.com
536bulk.rhs.mailpolice.com
346adv.rhs.mailpolice.com
103postmaster.rfc-ignorant.org
16dsn.rfc-ignorant.org (zone not intended for this use)
8bogusmx.rfc-ignorant.org
4porn.rhs.mailpolice.com

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

HitsDNS Zone
26288(total number of domains tested, including 345 at SDSC)
6842(union of all domain zones)
2855whois.rfc-ignorant.org (union of all results)
2269whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
2253abuse.rfc-ignorant.org
1217postmaster.rfc-ignorant.org
1053webmail.rhs.mailpolice.com
892rhsbl.ahbl.org
858dsn.rfc-ignorant.org
586whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
546bogusmx.rfc-ignorant.org
470bulk.rhs.mailpolice.com
207blackhole.securitysage.com
178adv.rhs.mailpolice.com
168bl.deadbeef.com
93porn.rhs.mailpolice.com
46rhsbl.sorbs.net (result 127.0.0.11 = domain uses bad address space)
46rhsbl.sorbs.net (union of all results)
36rddn.dnsbl.net.au (zone not intended for this use)
18ex.dnsbl.org
15dynamic.rhs.mailpolice.com
3cart00ney.surriel.com

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 27 July 2005.