Blacklists Compared

5 July 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 and block.blars.org zones zone because they are too aggressive to be widely useful, and the blocktest.relays.osirusoft.com and query.bondedsender.org zones are also excluded because they are not blacklists.

HitsDNS Zone
13200(total number of IP addresses tested, including 376 at SDSC)
9566(union of most IP zones)
7862xbl.selwerd.cx
5727t1.bl.reynolds.net.au
4653blackholes.five-ten-sg.com (union of all results)
4620blackholes.easynet.nl
4539block.blars.org
4431wpb.bl.reynolds.net.au
3962unconfirmed.dsbl.org
3917no-more-funn.moensted.dk (union of all results)
3791dnsbl.njabl.org (union of all results)
3760dnsbl.sorbs.net (union of all results)
3721dsbl.bl.reynolds.net.au
3721list.dsbl.org
3681blackholes.five-ten-sg.com (result 127.0.0.2 = spam source)
3485proxies.blackholes.easynet.nl
3206psbl.surriel.com
3104dnsbl.sorbs.net (result 127.0.0.2 = open http proxy)
2908dnsbl.sorbs.net (result 127.0.0.3 = open socks proxy)
2792dnsbl.njabl.org (result 127.0.0.9 = open proxy)
2736cn-kr.blackholes.us (union of all results)
2470proxies.relays.monkeys.com (result 127.0.0.2 = open proxy)
2470proxies.relays.monkeys.com (union of all results)
2458no-more-funn.moensted.dk (result 127.0.0.2 = spam source)
2155bl.spamcop.net
1976relays.osirusoft.com (union of all results)
1851blackhole.compu.net
1735ipwhois.rfc-ignorant.org
1516cn-kr.blackholes.us (result 127.0.0.2 = China)
1516china.blackholes.us
1220cn-kr.blackholes.us (result 127.0.0.3 = Korea)
1220korea.blackholes.us
1215korea.services.net
1173relays.osirusoft.com (result 127.0.0.9 = open proxy)
1171socks.relays.osirusoft.com
1082spamsources.fabel.dk
975no-more-funn.moensted.dk (result 127.0.0.3 = dialup)
825unsure.nether.net
812spews.bl.reynolds.net.au
776sbl.spamhaus.org
768pdl.bl.reynolds.net.au
742opm.blitzed.org
740dynablock.easynet.nl (result 127.0.0.2 = dialup)
740wdl.bl.reynolds.net.au
740dynablock.easynet.nl (union of all results)
709blackholes.five-ten-sg.com (result 127.0.0.7 = spam haven)
598blacklist.spambag.org
542spews.relays.osirusoft.com
524ybl.megacity.org
510cw.blackholes.us
502blocktest.relays.osirusoft.com (not a blacklist!)
494dnsbl.njabl.org (result 127.0.0.4 = spam source)
481relays.osirusoft.com (result 127.0.0.4 = spam source)
477blackholes.intersil.net
472dnsbl.sorbs.net (result 127.0.0.4 = open proxy)
456relaywatcher.n13mbl.com
446spamhaus.relays.osirusoft.com
424relays.osirusoft.com (result 127.0.0.6 = spamsites)
407dnsbl.delink.net
400work.drbl.croco.net
355spam.wytnij.to
321spamguard.leadmon.net (union of all results)
304spamguard.leadmon.net (result 127.0.0.2 = dialup)
278dnsbl.sorbs.net (result 127.0.0.6 = spam source)
270level3.blackholes.us
265brazil.blackholes.us
263dnsbl.njabl.org (result 127.0.0.2 = source or relay)
251dnsbl.njabl.org (result 127.0.0.3 = dialup)
245dialups.visi.com
230taiwan.blackholes.us
230no-more-funn.moensted.dk (result 127.0.0.7 = spam haven)
209multihop.dsbl.org
206comcast.blackholes.us
199blackholes.five-ten-sg.com (result 127.0.0.4 = unconfirmed opt-in)
195lbl.lagengymnastik.dk
186mail-abuse.blacklist.jippg.org
136verio.blackholes.us
136relays.ordb.org
136dialups.relays.osirusoft.com (union of all results)
129osrs.bl.reynolds.net.au
129ohps.bl.reynolds.net.au
128sbbl.they.com
125no-more-funn.moensted.dk (result 127.0.0.9 = misc)
125query.bondedsender.org (not a blacklist!)
121dialups.relays.osirusoft.com (result 127.0.0.3 = dialup)
120rr.blackholes.us
117qwest.blackholes.us
116russia.blackholes.us
115blackholes.uceb.org (union of all results)
1123y.spam.mrs.kithrup.com
109japan.blackholes.us
106relays.osirusoft.com (result 127.0.0.2 = open relay)
106inputs.relays.osirusoft.com
103relays.bl.kundenserver.de
102argentina.blackholes.us
98hongkong.blackholes.us
94relays.nether.net
93relays.osirusoft.com (result 127.0.0.3 = dialup)
87rmst.bl.reynolds.net.au
82no-more-funn.moensted.dk (result 127.0.0.10 = open proxy)
80charter.blackholes.us
78osps.bl.reynolds.net.au
70dnsbl.sorbs.net (result 127.0.0.10 = dialup)
69turkey.blackholes.us
69tr.countries.nerd.dk
69flowgoaway.com
68xo.blackholes.us
65internap.blackholes.us
65blackholes.uceb.org (result 127.0.0.3 = spam source)
64dun.dnsrbl.net
62mexico.blackholes.us
61blackholes.brainerd.net
57spamsources.relays.osirusoft.com (union of all results)
56vox.schpider.com
55spamsources.relays.osirusoft.com (result 127.0.0.4 = spam source)
49bellsouth.blackholes.us
48infolink.blackholes.us
41wanadoo-fr.blackholes.us
40blackholes.uceb.org (result 127.0.0.2 = open relay)
39probes.bl.reynolds.net.au
34interbusiness.blackholes.us
33bl.deadbeef.com
32inflow.blackholes.us
31blackholes.five-ten-sg.com (result 127.0.0.5 = relay output)
28dialup.blacklist.jippg.org (union of all results)
27dialup.blacklist.jippg.org (result 127.0.0.3 = dialup outside Japan)
26cybercon.blackholes.us
26above.blackholes.us
25he.blackholes.us
24singapore.blackholes.us
22rackspace.blackholes.us
22nigeria.blackholes.us
22no-more-funn.moensted.dk (result 127.0.0.8 = open web form)
21spam.shri.net
21no-more-funn.moensted.dk (result 127.0.0.5 = relay output)
20ph.rbl.cluecentral.net
18rogers.blackholes.us
18a2000.blackholes.us
16blackholes.five-ten-sg.com (result 127.0.0.12 = spam-friendly freemail provider)
15covad.blackholes.us
15dialups.relays.osirusoft.com (result 127.0.0.4 = no reverse DNS)
15spamguard.leadmon.net (result 127.0.0.7 = spam source netblock)
15spam.exsilia.net (union of all results)
14thailand.blackholes.us
14malaysia.blackholes.us
13blackholes.five-ten-sg.com (result 127.0.0.9 = misc)
13spam.exsilia.net (result 127.0.0.2 = spam source)
12yipes.blackholes.us
12maxim.blackholes.us
12proxy.relays.osirusoft.com
11telstra.blackholes.us
11broadwing.blackholes.us
9owps.bl.reynolds.net.au
8epoch.blackholes.us
8blackholes.uceb.org (result 127.0.0.8 = spam source with fake sender)
7pajo.blackholes.us
6eli.blackholes.us
5olm.blackholes.us
5dnsbl.sorbs.net (result 127.0.0.5 = open relay)
4omrs.bl.reynolds.net.au
4dev.null.dk
4no-more-funn.moensted.dk (result 127.0.0.4 = unconfirmed opt-in)
3dnsbl.sorbs.net (result 127.0.0.7 = open formmail.cgi)
2navisite.blackholes.us
2burst.blackholes.us
2blackholes.uceb.org (result 127.0.0.4 = spam source network)
2t3direct.bl.reynolds.net.au
2spamsources.relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
2relays.osirusoft.com (result 127.0.0.7 = unconfirmed opt-in)
2spamguard.leadmon.net (result 127.0.0.3 = spam source)
2blackholes.five-ten-sg.com (result 127.0.0.10 = virus notices)
2spam.exsilia.net (result 127.0.0.3 = virus source)
1valuenet.blackholes.us
1affinity.blackholes.us
1dnsbl.sorbs.net (result 127.0.0.9 = zombie network)
1spamsites.bl.reynolds.net.au
1spamsites.relays.osirusoft.com
1dnsbl.njabl.org (result 127.0.0.5 = relay output)
1dialup.blacklist.jippg.org (result 127.0.0.4 = dialup in Japan)
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)

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
13200(total number of IP addresses whose names were tested, including 376 at SDSC)
3861(union of all domain zones)
2565abuse.rfc-ignorant.org
1186rddn.bl.reynolds.net.au
858whois.rfc-ignorant.org (union of all results)
435whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
423whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
333bulk.rhs.mailpolice.com
119bl.deadbeef.com
25porn.rhs.mailpolice.com
23dsn.rfc-ignorant.org (zone not intended for this use)
10postmaster.rfc-ignorant.org

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

HitsDNS Zone
8209(total number of domains tested, including 172 at SDSC)
2206(union of all domain zones)
708whois.rfc-ignorant.org (union of all results)
677abuse.rfc-ignorant.org
603bulk.rhs.mailpolice.com
568whois.rfc-ignorant.org (result 127.0.0.7 = no whois data at all)
397postmaster.rfc-ignorant.org
370dsn.rfc-ignorant.org
140whois.rfc-ignorant.org (result 127.0.0.5 = bad whois data)
41bl.deadbeef.com
36porn.rhs.mailpolice.com
36ex.dnsbl.org (union of all results)
34ex.dnsbl.org (result 127.0.0.2 = spamsites)
19rddn.bl.reynolds.net.au (zone not intended for this use)
9bandwidth-pigs.monkeys.com
6in.dnsbl.org (union of all results)
3in.dnsbl.org (result 127.0.0.2 = spam source)
3in.dnsbl.org (result 127.0.0.6 = unconfirmed opt-in)
2ex.dnsbl.org (result 127.0.0.3 = spam source)

This document was last updated by Jeff Makey <jeff@sdsc.edu> on 12 July 2003.