Blacklists Compared

22 March 2003

[ 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 xbl.selwerd.cx zone because it is too aggressive to be widely useful, and excludes the blocktest.relays.osirusoft.com zone because it is not a blacklist.

HitsDNS Zone
11006(total number of IP addresses tested, including 426 at SDSC)
7598(union of most IP zones)
5502xbl.selwerd.cx
4627blackholes.five-ten-sg.com (union of all results)
3489t1.bl.reynolds.net.au
2798blackholes.wirehub.net
2363relays.osirusoft.com (union of all results)
2340block.blars.org
2203no-more-funn.moensted.dk (union of all results)
1963dnsbl.njabl.org (union of all results)
1795unconfirmed.dsbl.org
1771blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
1448list.dsbl.org
1338bl.spamcop.net
1295ztl.dorkslayers.com
1225blackholes.five-ten-sg.com (result 127.0.0.3 = dialup)
1217blackholes.intersil.net
1187dnsbl.sorbs.net (union of all results)
1142proxies.blackholes.wirehub.net
1137sbl.spamhaus.org
1124spamhaus.relays.osirusoft.com
1111blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
1098relays.osirusoft.com (result 127.0.0.6 = spamsites)
1097no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
1087proxies.relays.monkeys.com (result 127.0.0.2 = open proxy)
1087proxies.relays.monkeys.com (union of all results)
1027cn-kr.blackholes.us (union of all results)
962spews.bl.reynolds.net.au
938spews.relays.osirusoft.com
888relays.osirusoft.com (result 127.0.0.4 = spam source)
829dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
777dnsbl.njabl.org (result 127.0.0.9 = open proxy)
767ipwhois.rfc-ignorant.org
733dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
702opm.blitzed.org
661dnsbl.njabl.org (result 127.0.0.4 = spam source)
653cw.blackholes.us
617work.drbl.croco.net
599ybl.megacity.org
563blocktest.relays.osirusoft.com (not a blacklist!)
542korea.services.net
541no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
534cn-kr.blackholes.us (result 127.0.0.3 = Korea)
534korea.blackholes.us
514rackspace.blackholes.us
493cn-kr.blackholes.us (result 127.0.0.2 = China)
493china.blackholes.us
492dnsbl.delink.net
471spam.dnsrbl.net
413spamsources.fabel.dk
403spam.wytnij.to
376blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
366dnsbl.njabl.org (result 127.0.0.2 = source or relay)
354blackholes.uceb.org (union of all results)
344blacklist.spambag.org
334relays.osirusoft.com (result 127.0.0.2 = relay)
334inputs.relays.osirusoft.com
332assholes.madscience.nl
309no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
287multihop.dsbl.org
266relays.osirusoft.com (result 127.0.0.9 = open proxy)
259socks.relays.osirusoft.com
256mail-abuse.blacklist.jippg.org
242flowgoaway.com
227relays.bl.kundenserver.de
209brazil.blackholes.us
208blackholes.uceb.org (result 127.0.0.4 = spam source network)
184dynablock.wirehub.net (result 127.0.0.2 = dialup)
184dynablock.wirehub.net (union of all results)
163verio.blackholes.us
162spamguard.leadmon.net (union of all results)
153dnsbl.njabl.org (result 127.0.0.3 = dialup)
1493y.spam.mrs.kithrup.com
147spamguard.leadmon.net (result 127.0.0.2 = dialup)
140spamsources.relays.osirusoft.com (union of all results)
135relays.ordb.org
130level3.blackholes.us
127spamsources.relays.osirusoft.com (result 127.0.0.4 = spam source)
124taiwan.blackholes.us
114internap.blackholes.us
111rr.blackholes.us
110dun.dnsrbl.net
102blackhole.compu.net
97dialups.relays.osirusoft.com (union of all results)
95xo.blackholes.us
95no-more-funn.moensted.dk (result 127.0.0.9 = misc)
94blackholes.uceb.org (result 127.0.0.3 = spam source)
94blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
91dialups.relays.osirusoft.com (result 127.0.0.3 = dialup)
90japan.blackholes.us
88orbs.dorkslayers.com
87dialups.visi.com
86vox.schpider.com
76no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
76bl.deadbeef.com
67blackholes.brainerd.net
66relays.osirusoft.com (result 127.0.0.3 = dialup)
62argentina.blackholes.us
60blackholes.uceb.org (result 127.0.0.2 = relay)
57hongkong.blackholes.us
53spam.exsilia.net (union of all results)
51no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
50tr.countries.nerd.dk
50spam.exsilia.net (result 127.0.0.2 = spam source)
50bl.deadbeef.com
48dnsbl.sorbs.net (result 127.0.0.6 = spam source)
47relays.osirusoft.com (result 127.0.0.5 = relay output)
43interbusiness.blackholes.us
38russia.blackholes.us
36inflow.blackholes.us
36cybercon.blackholes.us
36dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
36inflow.noflow.org
30he.blackholes.us
29eli.blackholes.us
26no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
24above.blackholes.us
24blackholes.five-ten-sg.com (result 127.0.0.8 = open web form)
22singapore.blackholes.us
19nigeria.blackholes.us
18dev.null.dk
18blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
17malaysia.blackholes.us
16thailand.blackholes.us
16broadwing.blackholes.us
16dialup.blacklist.jippg.org (union of all results)
15proxies.relays.osirusoft.com
14dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
13spammers.v6net.org
13valuenet.blackholes.us
13ph.rbl.cluecentral.net
11spamsources.relays.osirusoft.com (result 127.0.0.6 = spamhaus)
11relays.dorkslayers.com
10telstra.blackholes.us
10epoch.blackholes.us
10covad.blackholes.us
10affinity.blackholes.us
10spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
8blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
7wanadoo-fr.blackholes.us
7pajo.blackholes.us
6valueweb.blackholes.us
6dialups.relays.osirusoft.com (result 127.0.0.4 = no reverse DNS)
6no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
5yipes.blackholes.us
5blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
5dnsbl.njabl.org (result 127.0.0.8 = open formmail.cgi)
5spamguard.leadmon.net (result 127.0.0.3 = spam source)
3spam.exsilia.net (result 127.0.0.3 = virus source)
2skynetweb.blackholes.us
2ciberlynx.blackholes.us
2dnsbl.sorbs.net (result 127.0.0.5 = open relay)
2spamsources.relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
2spamsites.relays.osirusoft.com (result 127.0.0.6)
2relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
2dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
2no-more-funn.moensted.dk (result 127.0.0.11 = repeated probes)
2spamsites.relays.osirusoft.com (union of all results)
1dnsbl.njabl.org (result 127.0.0.5 = relay output)
1proxies.exsilia.net

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. The blackhole.compu.net zone "is primarily for hosts which were not blocked by other blackhole sites and spammed compu.net."

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

HitsDNS Zone
11006(total number of IP addresses whose names were tested, including 426 at SDSC)
2629(union of all domain zones)
1853abuse.rfc-ignorant.org
1564whois.rfc-ignorant.org (union of all results)
1272whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
292whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
20postmaster.rfc-ignorant.org
13dsn.rfc-ignorant.org (zone not intended for this use)

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

HitsDNS Zone
7223(total number of domains tested, including 209 at SDSC)
1180(union of all domain zones)
589abuse.rfc-ignorant.org
495whois.rfc-ignorant.org (union of all results)
310whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
292postmaster.rfc-ignorant.org
193dsn.rfc-ignorant.org
185whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
86bl.deadbeef.com
22ex.dnsbl.org (union of all results)
20ex.dnsbl.org (result 127.0.0.2 = spamsites)
5bandwidth-pigs.monkeys.com
5in.dnsbl.org (union of all results)
4in.dnsbl.org (result 127.0.0.6 = unconfirmed opt-in)
2ex.dnsbl.org (result 127.0.0.3 = spam source)
1in.dnsbl.org (result 127.0.0.2 = spam source)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 25 March 2003.