dnslists.otl

   1 TODO
   2         check and link (de)listing policy
   3                 NOGO: delisting for money
   4         check and link usage policy
   5         check and link return codes
   6         find newsfeed or mailinglist
   7         give feedback?
   8         implement in exim
   9         implement in SA
  10         implement in rspamd
  11 00_META
  12         https://bugs.launchpad.net/ubuntu/+source/amispammer/+bug/835614
  13         http://www.blalert.com/dnsbls
  14         http://www.dnsbl.info/dnsbl-list.php
  15         http://dnsbl.inps.de/index.cgi?lang=en&site=00002
  16         http://www.sdsc.edu/~jeff/spam/cbc.html
  17         http://moensted.dk/spam/
  18         https://whatismyipaddress.com/blacklist-check
  19         https://multirbl.valli.org/
  20         https://glockapps.com/blacklist/
  21         https://docs.hetrixtools.com/monitored-blacklists/
  22         https://www.blacklistmaster.com/
  23         https://knowledge.validity.com/hc/en-us/sections/204468388-Blocklists
  24         https://github.com/zbetcheckin/DNSBLs
  25         https://en.wikipedia.org/wiki/Comparison_of_DNS_blacklists
  26         https://www.impressionwise.com/kb/threats/rbl-advisories.html
  27 00_ELANG
  28         http://dnsbl.aspnet.hu/
  29                 hungarian?
  30         http://spam-rbl.fr/
  31                 french
  32         https://mav.com.br/
  33                 maybe? they have antispam but it’s all portugese? or spanish? no idea
  34 00_DEAD
  35         http://openrbl.org/
  36                 as seems dead
  37                         404s
  38                         wiki is down
  39         http://mailhosts.org/
  40                 dead
  41                         https://www.blalert.com/dnsbl/shortlist.mailhosts.org
  42         blitzed.org
  43                 dead since 2006
  44                         https://www.dnsbl.com/2007/02/status-of-opmblitzedorg-dead.html
  45                                 referenced ML post is 404
  46         blackholes.five-ten-sg.com
  47                 Offline as of 1/1/2013
  48                         https://whatismyipaddress.com/five-ten-sg
  49         dynip.rothen.com
  50                 On 9/29/2020 the ROTHEN blacklist appears to have started to list the entire internet
  51                         https://www.dnsbl.info/dnsbl-details.php?dnsbl=dynip.rothen.com
  52         fl.chickenboner.biz
  53                 dead since 2011
  54                         https://community.spiceworks.com/topic/329762-blacklist-removal
  55                         https://bugs.launchpad.net/ubuntu/+source/amispammer/+bug/835614
  56                 website contains spam/crap
  57         http://cart00ney.surriel.com/
  58                 cart00ney.org is dead
  59         http://dsbl.org/
  60                 points to surriel.com
  61         http://csma.biz/
  62                 domain is for sale
  63                 dead since 2013
  64                         https://www.dnsbl.com/2013/02/status-of-blcsmabiz-dead.html
  65         http://dnsbl.net.au/
  66                 website contains info about living in australia? called "AusBlog"
  67                 http://www.dnsbl.com/2009/04/status-of-dnsblnetau-dead.html
  68         http://moensted.dk/spam/
  69                 dead since 2010
  70                 https://moensted.dk/spam/
  71         http://rbl.mw-internet.net/
  72                 domain was parked
  73                 2023: it is an asian(?) gambling(?) website
  74         http://www.blackholes.us/
  75                 dead since 2009
  76                         https://www.dnsbl.com/2009/10/status-of-blackholesus-dead.html
  77         http://www.deadbeef.com/
  78                 dead, no info
  79         spamsources.dnsbl.info
  80                 dead since 2011 or so
  81                         http://www.dnsbl.info/spamsources-dnsbl-defunct.php
  82         http://www.gweep.ca/
  83                 domain dead, no other info
  84         http://www.njabl.org/
  85                 dead since 2013
  86                         https://en.wikipedia.org/wiki/Not_Just_Another_Bogus_List
  87         http://wytnij.to/
  88                 website parked, no other info
  89         https://www.transip.nl/
  90                 dead since 2013
  91                         https://www.blalert.com/dnsbl/proxy.block.transip.nl
  92                         https://www.blalert.com/dnsbl/residential.block.transip.nl
  93         pss.spambusters.org.ar
  94                 NXDOMAIN
  95         rbl.snark.net
  96                 NXDOMAIN
  97                 https://snark.net/ gives access denied
  98         whois.rfc-ignorant.org
  99                 NXDOMAIN
 100                 rfc-ignorant.org registered but no A/AAAA record
 101                 dead since 2012
 102                         http://www.h-online.com/security/news/item/RFC-Ignorant-org-blacklist-closes-down-1724814.html
 103                         https://www.dnsbl.com/2012/09/status-of-rfc-ignorantorg-shutting-down.html
 104         will-spam-for-food.eu.org
 105                 unmaintained
 106                 dead
 107                         https://rfc1149.net/blog/2012/01/22/who-did-resurrect-will-spam-for-food/
 108         http://proxybl.org/
 109                 dead, seemingly written on http://proxybl.org/blog but that’s also dead
 110                 https://linuxreviews.org/Mail_Spam_Blacklists
 111                 https://community.sophos.com/utm-firewall/f/web-server-security/50273/dnsbl-proxybl-org-offline
 112         dev.null.dk
 113                 timeout, also on the parent null.dk
 114                 effectively dead
 115         dnsbl.mags.net
 116                 seems dead, no info to be found
 117                 domain does not respond
 118         http://msrbl.blogspot.ch/
 119                 http://msrbl.blogspot.com/ says "no updates" since 2010 but supposed to be reactivated
 120                 effectively dead
 121         http://www.olsentech.net/
 122                 strange content on web
 123                 effectively dead
 124         rbl.orbitrbl.com
 125                 http://www.orbitrbl.com/
 126                 timeout
 127         rbl.polarcomm.net
 128                 NXDOMAIN
 129                 registered but no A/AAAA record
 130         cidr.bl.mcafee.com
 131                 https://kc.mcafee.com/corporate/index?page=content&id=KB53783
 132                         404
 133                 no info to be found
 134                 dead?
 135         http://anti-spam.org.cn/?locale=en_US
 136                 unreachable DNS
 137         rbl.talkactive.net
 138                 seems dead
 139                 talkactive.net redirects twice to some hosting company
 140                 last listings in 2017
 141                         https://multirbl.valli.org/detail/rbl.talkactive.net.html
 142                         https://www.blacklistmaster.com/blacklists?view=details&blacklist=rbl.talkactive.net
 143         dnsbl.ipocalypse.net
 144                 no policies published
 145                 dead
 146                         was a private list of an irc network
 147                         network was renamed idlechat.net in 2014
 148                         became a discord chat in 2022(?)
 149         http://blakjak.net/RBL
 150                 external access disabled
 151                 2023: seems dead, website is a weird error
 152                 https://www.blalert.com/dnsbl/rbl.blakjak.net
 153                         This is a private list that we do not monitor as the maintainer has explicity announced that the list is for his personal use
 154         http://cyberlogic.net/
 155                 french (canada)
 156                 https://www.dnsbl.info/dnsbl-details.php?dnsbl=dnsbl.cyberlogic.net
 157                         On or about 5/21/2018 the cyberlogic DNSBL ceased functioning properly.
 158                 https://www.dnsbl.com/2018/05/
 159                         As reported on the mailop mailing list on Friday May 25, 2018, the blocking list at dnsbl.cyberlogic.net now contains a "wildcard" DNS entry, effectively listing the entire internet
 160         http://www.rbl.jp/allrbl-e.html
 161                 website asks for login or just errors
 162         http://www.spamhauswhitelist.com/en/
 163                 looks like a parked domain with ads
 164         http://stopspam.org/rblcheck/index.php
 165                 aka dul.pacifier.net
 166                 http://www.stopspam.org/rbl-info/
 167                         stopped in 2013
 168         http://countries.nerd.dk/
 169                 unable to connect, also for nerd.dk
 170         http://dul.ru/dul.en.html
 171                 DEAD for sale
 172         http://dns.measurement-factory.com/surveys/openresolvers.html
 173                 dead
 174                         »The following text describes past open DNS resolver surveys and an associated DNS lookup service that has been long shut down«
 175         http://www.sectoor.de/tor.php
 176                 timeouts
 177         http://anticaptcha.net/
 178                 for sale
 179         http://blacklist.lashback.com/
 180                 query zone: ubl.unsubscore.com
 181                 provider’s website https://lashback.com/ seems alive and active (news entries from 2023) but does not link to the blacklist
 182                 rsync URLs seem dead, so does the download url
 183         http://blacklist.woody.ch/
 184                 no entries in the displayed "top 100"
 185                 may have been absorbed into the swinog blacklists, see antispam.imp.ch
 186         http://cbl.abuseat.org/
 187                 https://www.abuseat.org/
 188                         changes to the CBL that occured in January 2021. In short, the CBL infrastructure was replaced by the Spamhaus XBL structure
 189         http://dnsbl.burnt-tech.com/
 190                 domain is for sale
 191         http://rbl.dns-servicios.com/rbl.php
 192                 website can not be found
 193         http://spamcannibal.org/
 194                 dead, as of at least 2018
 195         http://st.technovision.dk/
 196                 https://docs.hetrixtools.com/st-technovision-dk-inactive-removed/
 197                         [December 8, 2021] This RBL has stopped responding to DNS queries.
 198         http://spamstinks.com/
 199                 cert is for generic hostname
 200                 website shows some login form
 201         http://virbl.bit.nl/
 202                 https://www.rollernet.us/2017/01/shutdown-of-virbl-dnsbl-bit-nl/
 203                         January 23, 2017: »The Virbl-project site has been replaced by this static message to inform those that find their ways here. The Virbl DNSBL-zone was emptied and will be removed all together at a moment further on in the future.«
 204         http://www.blocklist.de/en/index.html
 205                 lots of timeouts as of 2023
 206                 forum link is dead, among others
 207                 seems unmaintained but alive
 208                 latest news is from 2016
 209                 latest blog entry from 2022
 210                         Abusix, a network security company for mail security and abuse report handling, takes over blocklist.de to integrate it within its Abusix platform to further improve its data quality.
 211         http://www.emailbasura.org/cgi-bin/emailbasura-ini.pl?lang=eng
 212                 placeholder/parked?
 213 00_NEEDS_RECHECK
 214         https://antispam.imp.ch/
 215                 no usage policy
 216                 no return code info
 217                 no good listing policy
 218                 information received from inquiry to provider
 219                         website will be updated
 220                         return codes
 221                                 dnsrbl.swinog.ch and uribl.swinog.ch (holding time increases with hits)
 222                                         127.0.1.8 = default
 223                                         127.0.0.10 => TRAP (Email sent to a spamtrap)
 224                                         127.0.0.11 => REPO (Email reported as Spam by customer)
 225                                 spamrbl.imp.ch (3 days holding time)
 226                                         IPs are listed when trying to send mail to the spamtrap mailserver
 227                                         MD5 hash: attachment sent to the swinog blacklist
 228                                 wormrbl.imp.ch
 229                                         DEAD
 230         http://blacklist.woody.ch/rblcheck.php3
 231                 dead?
 232                 waiting for feedback
 233         http://dnsbl.iip.lu/
 234                 https://docs.hetrixtools.com/lookup-dnsbl-iip-lu-false-positive-removed/
 235                         in 2016: lookup.dnsbl.iip.lu blacklist started issuing false positive responses and upon further investigation looks to be abandoned/dead.
 236                 https://www.blalert.com/dnsbl/lookup.dnsbl.iip.lu
 237                         This blacklist is marked as "shut down" and non-operational as of 2017-12-31.
 238         http://dnsbl.inps.de/
 239                 timeout
 240                 https://www.dnsbl.com/search/label/dnsbl.inps.de
 241                         Today, May 25, 2020, he has announced that it is shutting down, due to concerns around GDPR and personal challenges brought on by the coronavirus pandemic.
 242                 https://docs.hetrixtools.com/dnsbl-inps-de-removed-from-our-system/
 243                         [May 29,2018] IPv4 RBL dnsbl.inps.de has been removed from our system, as they have decided to discontinue the RBL project for the time being.
 244                 https://glockapps.com/blacklist/dnsbl-inps-de/
 245                         Today, May 25, 2020, he has announced that it is shutting down, due to concerns around GDPR and personal challenges brought on by the coronavirus pandemic.
 246                 https://www.dnsbl.info/dnsbl-details.php?dnsbl=dnsbl.inps.de
 247                         This blacklist is offline as of May 1, 2020.
 248                 https://web.archive.org/web/20220428013500/http://www.inps.de/
 249 00_NEEDS_RESEARCH
 250         bl.tiopan.com
 251         blocked.hilli.dk
 252         dialups.visi.com
 253         dnsbl.antispam.or.id
 254         dob.sibl.support-intelligence.net
 255         intruders.docs.uu.se
 256         map.spam-rbl.com
 257         rbl.triumf.ca
 258         all.s5h.net
 259                 http://www.usenix.org.uk/content/rbl.html
 260         torexit.dan.me.uk
 261         http://pedantic.org/
 262                 as of 20140701
 263         rbl.fasthosts.co.uk
 264                 https://help.fasthosts.co.uk/app/answers/detail/a_id/140/kw/rbl
 265                 seems dead?
 266                 https://antispam.fasthosts.co.uk/
 267 00_ALIVE
 268         00_RECONSIDER
 269                 http://barracudacentral.org/rbl
 270                         requires account with extensive information (more than spamhaus e.g.):
 271                                 your name.
 272                                 your company name.
 273                                 your phone number.
 274                                 your address.
 275                                 your city name.
 276                                 your state/province name.
 277                                 your zip/postal code.
 278                                 the name of the alternate contact.
 279                                 the phone number of the alternate contact.
 280                                 the email address of the alternate contact.
 281                         seems well documented
 282         00_E_EVIL
 283                 sbl.nszones.com
 284                         http://www.spamhaus.org/organization/statement/008/fake-dnsbl-uncovered-nszones.com
 285                 http://www.backscatterer.org/
 286                         questionable policy - pay for (quicker) delisting
 287                         https://support.hornetsecurity.com/hc/en-us/articles/360011880797-Why-are-Hornetsecurity-IP-addresses-listed-at-Backscatterer-
 288                                 as of December 29, 2021: »The removal at the blacklist backscatterer.org can only be done for a fee«
 289                         https://www.warmy.io/blog/backscatterer-blacklist-how-to-remove-your-ip-from-it
 290                                 in March 17, 2023 does not mention need to pay
 291                         https://support.forcepoint.com/s/article/Forcepoint-IP-s-blocklisted-by-UCEProtect-and-Backscatterer-org
 292                                 recommend against using it
 293                         https://whatismyipaddress.com/backscatterer
 294                                 mentions strict delisting process and "express delisting" but nothing further
 295                         https://bobcares.com/blog/backscatterer-blacklist/
 296                                 goes through the process with screenshots showing express delisting for 109$
 297                         https://community.cisco.com/t5/email-security/issues-with-www-backscatterer-org-any-one/td-p/1298377
 298                                 more opinions
 299                         https://www.titanhq.com/blog/warning-ignore-pay-for-de-listing-blacklist-service/
 300                                 Jan 17th, 2020: »UCEProtect also charges a delisting fee. TitanHQ discourages email administrators from using the UCEProtect blacklist and we do not recommend paying for list removal«
 301                         https://web.archive.org/web/20150320180344/http://www.jvfconsulting.com/blog/130/Backscatterer_Network_Spam_List_Is_Another_UCEPROTECT_Extortion_Scam.html
 302                                 another opinion
 303         00_E_INFORMATION
 304                 blacklist.sci.kun.nl
 305                         https://cncz.science.ru.nl/en/howto/email-spam/
 306                         not really its own DNSBL?
 307                         no usage information
 308                         no usage policy
 309                 http://anonmails.de/
 310                         seems serious but missing necessary info
 311                                 usage policy
 312                                 listing policy
 313                 http://blacklist.jippg.org/
 314                         no usage policy
 315                         no listing policy
 316                         no return code info
 317                 bip.virusfree.cz
 318                         used by rspamd
 319                         https://www.virusfree.cz/en/help is the only place I can find any official reference to this list at all but no policies or usage information
 320                 https://www.nixspam.net/
 321                         previously http://www.dnsbl.manitu.net/
 322                         query zone: ix.dnsbl.manitu.net
 323                         provided by the reputable german publisher 'heise' which makes the high quality c’t, iX, and telepolis magacines
 324                         difficult to find info regarding listing policy
 325                         asked for more information to be added
 326                                 https://www.heise.de/forum/iX/Kommentare/Gemeinsam-stark/Nutzungsbedingungen-Return-Codes-sonstige-Infos/posting-42669177/show/
 327                 access.redhawk.org
 328                         website works but barely any info, not even how to query it
 329                         https://www.redhawk.org/?p=64
 330                         https://www.redhawk.org/SpamHawk/index.php
 331                 https://senderscore.org/
 332                         requires registration?
 333                         Scam? http://www.complaintsboard.com/complaints/buyer-beware-senderscoreorg-is-a-scam-c276871.html
 334                         https://senderscore.org/assess/blocklist-lookup/
 335                         FAQ: https://knowledge.validity.com/hc/en-us/articles/360006992592-Return-Path-Blocklist-RPBL-FAQ-
 336                         no information how to query found
 337                 mail-abuse.org
 338                         https://ers.trendmicro.com/
 339                         trendmicro paid service
 340                         https://docs.trendmicro.com/en-us/enterprise/email-reputation-services-online-help/getting-started_001/configuring-email-re/creating-an-account.aspx
 341                                 »If you don’t create an account, you can still query the reputation of an IP address«
 342                         I don’t find any pricing or usage information
 343                 http://dnsbl.tornevall.org/
 344                         https://www.tornevall.net/
 345                         related to https://www.fraudbl.org/
 346                         seems a bit unstructured and not very well documented
 347                                 I can’t be arsed to deal with confluence slowing my browser to a halt repeatedly and it’s really hard to navigate but there seems to be some information on https://docs.tornevall.net/display/TORNEVALL/Endpoint%3A+dnsbl+-+DNSBL+v5+with+API+v3
 348                         seems active
 349                 http://rbl.schulte.org/
 350                         seems active
 351                         listing policy seems to be: they received spam from an IP
 352                         usage policy: Anyone can use this RBL list [sic]
 353                         return codes: probably boolean, i.e. either listed or not
 354                 http://relaytest.kundenserver.de/
 355                         by 1und1 (now ionos?), used internally
 356                         https://www.blalert.com/dnsbl/relays.bl.kundenserver.de
 357                         no usage policy found
 358                         no listing policy found
 359                         no return code explanation found
 360                 http://www.blockedservers.com/
 361                         no usage policy
 362                         no listing policy
 363                         no documentation
 364                         "funny":
 365                                 No rights given; all rights are in the dumpster; Copyleft 2012 - 3013 - page generated in 0.009843111038208 secs
 366         00_E_PAID
 367         00_E_PRIVATE
 368                 88.blacklist.zap
 369                         http://blogs.technet.com/b/fss/archive/2009/05/08/forefront-dnsbl-yeah-or-nay.aspx
 370                         https://web.archive.org/web/20150812003556/http://blogs.technet.com/b/fss/archive/2009/05/08/forefront-dnsbl-yeah-or-nay.aspx
 371                         https://www.blalert.com/dnsbl/88.blacklist.zap
 372                                 88.blacklist.zap is an internal blacklist maintained by Microsoft's Forefront
 373                         https://www.dnsbl.com/search/label/frontbridge
 374                 http://drmx.org/
 375                         »Use of any DrMX.ORG DNS Zone is by request and by contract only.«
 376                 rbl.tdk.net
 377                         tdk.net seems dead on http(s)
 378                         private
 379                                 https://www.blalert.com/dnsbl/rbl.tdk.net
 380                         old link: http://postmaster.tdc.dk/publish.php?id=31787
 381                                 tdc.dk redirects to yousee.dk
 382                                 https://web.archive.org/web/20170703084224/http://postmaster.tdc.dk/publish.php?id=31787
 383                 rbl.zenon.net
 384                         private
 385                                 https://www.blalert.com/dnsbl/rbl.zenon.net
 386                         http://www.noc.zenon.net/rbl/
 387                         russian(?)
 388                 https://ahbl.org/
 389                         was public until 2015
 390                         now private, invite-only
 391         http://rfc-clueless.org/
 392                 lists domains
 393                         that do not adhere to common best practices or requirements
 394                 does NOT list spammers!
 395                 listing criteria are explained well
 396                         http://rfc-clueless.org/pages/listing_policy
 397                 return codes are explained
 398                         http://rfc-clueless.org/
 399                 usage policy is not so clear but the FAQ implies that it’s just free to use for everyone
 400                 many timeouts
 401                         first noticed in 2014 and deactivated
 402                         retried in 2023 and still the case
 403         http://spameatingmonkey.com/
 404                 lists IPs
 405                         that sent backscatter
 406                         that sent to spamtrap
 407                         added by policy
 408                                 this includes dial-up!
 409                                 https://spameatingmonkey.com/faq/policy-based-listing
 410                 lists domains/URIs
 411                         by age
 412                         in spam bodies
 413                 usage policy seems clear
 414                         https://spameatingmonkey.com/faq/query-limits
 415                 listing policy seems clear
 416                         https://spameatingmonkey.com/services
 417                 return codes documented
 418                         https://spameatingmonkey.com/services
 419                 http://blogspambl.com/
 420                         redirects to spameatingmonkey.com
 421         http://uribl.com/
 422                 lists domains/URIs
 423                         that appear in spam bodies
 424                         has whitelist
 425                 lists IPs
 426                         that URIs in spam bodies resolve to
 427                 return codes are documented
 428                         https://uribl.com/about.shtml#implementation
 429                         bitmasked
 430                         127.0.0.1 is used to signal abusive query behaviour
 431         http://wiki.junkemailfilter.com/index.php/Spam_DNS_Lists
 432                 called "hostkarma"
 433                 lists domains/URIs
 434                 lists IPs
 435                 usage policy is relatively clear that it’s free, except maybe for big for-profit oranizations
 436                 listing policy is documented
 437                 return codes are documented
 438                 seems very trustworthy
 439         http://www.sorbs.net/
 440                 good reputation
 441                 lists domains/URIs
 442                 lists IPs
 443                 usage policy is clear that it’s free
 444                 listing policy is documented
 445                 return codes are documented
 446                 seems trustworthy
 447         http://www.spamhaus.org/
 448                 good reputation
 449                 very well done
 450                 seems very professional
 451                 lists domains/URIs
 452                 lists IPs
 453                 usage policy is clear
 454                         https://www.spamhaus.org/organization/dnsblusage/
 455                 listing policies are clearly documented
 456                 return codes are clearly documented
 457         http://www.surbl.org/
 458                 good reputation
 459                 lists domains/URIs
 460                 usage policy is clear
 461                         https://surbl.org/usage-policy
 462                 listing policy is documented
 463                 return codes are documented
 464                         bitmasked
 465                         127.0.0.1 means blocked
 466         http://zapbl.net/
 467                 lists domains/URIs
 468                 lists IPs
 469                 listing policy seems clear
 470                         https://zapbl.net/policy
 471                 usage policy seems clearly free for everyone
 472                         https://zapbl.net/using
 473                 return codes are documented
 474                 seems well done
 475         https://rbl.foobar.hu/
 476                 lists domains/URIs
 477                 lists IPs
 478                 listing policy seems clear
 479                 usage policy seems clearly free for everyone
 480                 return codes are documented
 481                 possibly unmaintained or dead
 482                         footer says: ©2013-14
 483         http://apews.org/?page=filter
 484                 questionable
 485                         https://www.dnsbl.com/search/label/apews
 486                         https://whatismyipaddress.com/apews
 487                 dead?
 488                         no news on http://apews-user.blogspot.com/ since 2014
 489                 not further looked into because of the above
 490         https://www.dnswl.org/
 491                 seems to be run with best intentions but has had issues from what I have heard from some users
 492                 IRC channel has some activity
 493                 usage policy relatively clear
 494                         free within certain limits
 495                 listing policy
 496                         self-service
 497                 return codes are documented
 498         00_E_FOCUS
 499                 https://www.dnsblchile.org/index.en.html
 500                         chilenian spam so not interesting for me
 501                         seems alive
 502         00_LISTS_BLOGSPAMMERS
 503                 https://www.madavi.de/madavibl/
 504                         »This blacklist should only be used to block comment spammer (on blogs and websites). Don’t use it for mail.«
 505                 http://bsb.empty.us/
 506                         does not exist anymore
 507                         empty.us returns »Nothing here, obviously.«
 508         00_LISTS_COUNTRIES
 509                 korea
 510                         http://korea.services.net/
 511         00_LISTS_DIALUPS
 512         00_LISTS_OPENRESOLVERS
 513         00_LISTS_TORNODES
 514                 https://www.dan.me.uk/dnsbl
 515                 http://rbl.efnetrbl.org/
 516                         aka http://tor.efnet.org/
 517                         lists IPs
 518                         lists open proxies, infected machines, tornodes, etc.
 519         https://0spam.org/
 520                 clear information on usage policy
 521                         Nothing. The 0Spam Project is absolutely free for email providers, IT professionals and general removal request.
 522                         DNSBL service and removals are 100% for free for all uses; commercial, non profit and personal.
 523                 seems serious
 524                 listing policies are a little less clear
 525                         bl.0spam.org DNSBL | 0spam Spam Trap Primary Database
 526                         nbl.0spam.org Network Black List | Spam Source Networks, high volume of spam trap hits in a Class C block will result in network listings in this DNSBL.
 527                         url.0spam.org URL Black List | This list contains the IP address of domains found to be in the source of spam emails found in our traps.
 528                 return codes not very clear
 529         https://abuse.ro/
 530                 policy
 531                         spamtraps
 532                         The last IP address before destination in the email headers is listed into rbl.abuse.ro list.
 533                         Sender domains are analyzed and if confirmed to be not spoofed, are listed into dbl.abuse.ro list
 534                         Spamvertized domains (including those indirectly linked through services like bit.ly) are listed into uribl.abuse.ro list
 535         http://dronebl.org/
 536                 usage policy is clear: free for whatever
 537                 listing policy is not quite so clear
 538                         can be mostly inferred from the classes but not entirely clear IMHO
 539                 has an IRC channel
 540                 return codes
 541                         not explicitly mentioned but it’s 127.0.0.X where X is the class from https://dronebl.org/classes
 542         http://psbl.org/
 543                 query zone: psbl.surriel.com
 544                 no usage policy, but seems implied that usage is free
 545                 listing policy
 546                         no explicit, complete policy given but sending to spamtraps is mentioned to get you listed and seems the exclusive mechanism
 547                 return codes
 548                         not documented, probably only boolean
 549         http://rbldata.interserver.net/
 550                 listing policy more or less clear
 551                 usage policy not given but since usage is explained it’s probably free for all
 552                 return codes seem to be binary, i.e. either listed or not
 553                 lists IPs
 554                 lists domains/URIs
 555         http://rv-soft.info/
 556                 usage policy not explicit but seems to be free
 557                 listing policy also not explicit but can be inferred from return code explanation
 558                 return codes are explained
 559         http://spamrats.com/
 560                 clear usage policy (ToS)
 561                 listing policies documented
 562                 return codes of aggregated list documented
 563                 lists IPs
 564         http://v4bl.org/
 565                 usage policy documented
 566                 listing policy not really clear
 567                 return codes documented
 568         http://wpbl.info/
 569                 listing procedure is documented
 570                 usage policy implied: free to use
 571                 return codes documented
 572         http://www.aupads.org/
 573                 aka www.antispam-ufrj.pads.ufrj.br
 574                 aka www.orve.org
 575                 listing policy more or less clear
 576                 lists IPs and FQDNs
 577                 usage policy seems clear: freely exported by anybody who wants to use them«
 578         http://www.gbudb.com/truncate/
 579         http://www.justspam.org/
 580         http://www.kempt.net/dnsbl/
 581         http://www.leadmon.net/spamguard/
 582         http://www.spamcop.net/
 583                 good policy
 584                 good reputation
 585         http://www.spamsources.fabel.dk/
 586                 sensible policy
 587         http://www.srntools.com/blacklist/
 588         http://www.uceprotect.net/en/index.php
 589         https://bl.konstant.no/
 590         https://choon.net/rbl.php
 591         https://www.abuse.ch/
 592                 https://www.abuse.ch/?tag=httpbl
 593         https://www.kisarbl.or.kr/
 594         https://www.megarbl.net/
 595         https://www.team-cymru.org/Services/Bogons/dns.html
 596         http://mailspike.net/usage.html
 597                 reputation-based
 598         http://www.whitelisted.org/
 599                 paid subscription
 600                 policy on site
 601         https://puck.nether.net/or/
 602                 policies on website
 603         http://www.isipp.com/email-accreditation/iadb-query-instruction/
 604                 requires signup
 605                 not quite a usage policy, but seems ok
 606                 strange split of ipv4 and ipv6
 607                 seems dead?