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 00_NEEDS_RECHECK
 205         https://antispam.imp.ch/
 206                 no usage policy
 207                 no return code info
 208                 no good listing policy
 209                 information received from inquiry to provider
 210                         website will be updated
 211                         return codes
 212                                 dnsrbl.swinog.ch and uribl.swinog.ch (holding time increases with hits)
 213                                         127.0.1.8 = default
 214                                         127.0.0.10 => TRAP (Email sent to a spamtrap)
 215                                         127.0.0.11 => REPO (Email reported as Spam by customer)
 216                                 spamrbl.imp.ch (3 days holding time)
 217                                         IPs are listed when trying to send mail to the spamtrap mailserver
 218                                         MD5 hash: attachment sent to the swinog blacklist
 219                                 wormrbl.imp.ch
 220                                         DEAD
 221         http://blacklist.woody.ch/rblcheck.php3
 222                 dead?
 223                 waiting for feedback
 224         http://dnsbl.iip.lu/
 225                 https://docs.hetrixtools.com/lookup-dnsbl-iip-lu-false-positive-removed/
 226                         in 2016: lookup.dnsbl.iip.lu blacklist started issuing false positive responses and upon further investigation looks to be abandoned/dead.
 227                 https://www.blalert.com/dnsbl/lookup.dnsbl.iip.lu
 228                         This blacklist is marked as "shut down" and non-operational as of 2017-12-31.
 229         http://dnsbl.inps.de/
 230                 timeout
 231                 https://www.dnsbl.com/search/label/dnsbl.inps.de
 232                         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.
 233                 https://docs.hetrixtools.com/dnsbl-inps-de-removed-from-our-system/
 234                         [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.
 235                 https://glockapps.com/blacklist/dnsbl-inps-de/
 236                         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.
 237                 https://www.dnsbl.info/dnsbl-details.php?dnsbl=dnsbl.inps.de
 238                         This blacklist is offline as of May 1, 2020.
 239                 https://web.archive.org/web/20220428013500/http://www.inps.de/
 240 00_NEEDS_RESEARCH
 241         bl.tiopan.com
 242         blocked.hilli.dk
 243         dialups.visi.com
 244         dnsbl.antispam.or.id
 245         dob.sibl.support-intelligence.net
 246         intruders.docs.uu.se
 247         map.spam-rbl.com
 248         rbl.triumf.ca
 249         all.s5h.net
 250                 http://www.usenix.org.uk/content/rbl.html
 251         torexit.dan.me.uk
 252         http://pedantic.org/
 253                 as of 20140701
 254         rbl.fasthosts.co.uk
 255                 https://help.fasthosts.co.uk/app/answers/detail/a_id/140/kw/rbl
 256                 seems dead?
 257                 https://antispam.fasthosts.co.uk/
 258 00_ALIVE
 259         00_RECONSIDER
 260                 http://barracudacentral.org/rbl
 261                         requires account with extensive information (more than spamhaus e.g.):
 262                                 your name.
 263                                 your company name.
 264                                 your phone number.
 265                                 your address.
 266                                 your city name.
 267                                 your state/province name.
 268                                 your zip/postal code.
 269                                 the name of the alternate contact.
 270                                 the phone number of the alternate contact.
 271                                 the email address of the alternate contact.
 272                         seems well documented
 273         00_E_EVIL
 274                 sbl.nszones.com
 275                         http://www.spamhaus.org/organization/statement/008/fake-dnsbl-uncovered-nszones.com
 276                 http://www.backscatterer.org/
 277                         questionable policy - pay for (quicker) delisting
 278                         https://support.hornetsecurity.com/hc/en-us/articles/360011880797-Why-are-Hornetsecurity-IP-addresses-listed-at-Backscatterer-
 279                                 as of December 29, 2021: »The removal at the blacklist backscatterer.org can only be done for a fee«
 280                         https://www.warmy.io/blog/backscatterer-blacklist-how-to-remove-your-ip-from-it
 281                                 in March 17, 2023 does not mention need to pay
 282                         https://support.forcepoint.com/s/article/Forcepoint-IP-s-blocklisted-by-UCEProtect-and-Backscatterer-org
 283                                 recommend against using it
 284                         https://whatismyipaddress.com/backscatterer
 285                                 mentions strict delisting process and "express delisting" but nothing further
 286                         https://bobcares.com/blog/backscatterer-blacklist/
 287                                 goes through the process with screenshots showing express delisting for 109$
 288                         https://community.cisco.com/t5/email-security/issues-with-www-backscatterer-org-any-one/td-p/1298377
 289                                 more opinions
 290                         https://www.titanhq.com/blog/warning-ignore-pay-for-de-listing-blacklist-service/
 291                                 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«
 292                         https://web.archive.org/web/20150320180344/http://www.jvfconsulting.com/blog/130/Backscatterer_Network_Spam_List_Is_Another_UCEPROTECT_Extortion_Scam.html
 293                                 another opinion
 294         00_E_INFORMATION
 295                 blacklist.sci.kun.nl
 296                         https://cncz.science.ru.nl/en/howto/email-spam/
 297                         not really its own DNSBL?
 298                         no usage information
 299                         no usage policy
 300                 http://anonmails.de/
 301                         seems serious but missing necessary info
 302                                 usage policy
 303                                 listing policy
 304                 http://blacklist.jippg.org/
 305                         no usage policy
 306                         no listing policy
 307                         no return code info
 308                 bip.virusfree.cz
 309                         used by rspamd
 310                         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
 311                 https://www.nixspam.net/
 312                         previously http://www.dnsbl.manitu.net/
 313                         query zone: ix.dnsbl.manitu.net
 314                         provided by the reputable german publisher 'heise' which makes the high quality c’t, iX, and telepolis magacines
 315                         difficult to find info regarding listing policy
 316                         asked for more information to be added
 317                                 https://www.heise.de/forum/iX/Kommentare/Gemeinsam-stark/Nutzungsbedingungen-Return-Codes-sonstige-Infos/posting-42669177/show/
 318                 access.redhawk.org
 319                         website works but barely any info, not even how to query it
 320                         https://www.redhawk.org/?p=64
 321                         https://www.redhawk.org/SpamHawk/index.php
 322                 https://senderscore.org/
 323                         requires registration?
 324                         Scam? http://www.complaintsboard.com/complaints/buyer-beware-senderscoreorg-is-a-scam-c276871.html
 325                         https://senderscore.org/assess/blocklist-lookup/
 326                         FAQ: https://knowledge.validity.com/hc/en-us/articles/360006992592-Return-Path-Blocklist-RPBL-FAQ-
 327                         no information how to query found
 328                 mail-abuse.org
 329                         https://ers.trendmicro.com/
 330                         trendmicro paid service
 331                         https://docs.trendmicro.com/en-us/enterprise/email-reputation-services-online-help/getting-started_001/configuring-email-re/creating-an-account.aspx
 332                                 »If you don’t create an account, you can still query the reputation of an IP address«
 333                         I don’t find any pricing or usage information
 334                 http://dnsbl.tornevall.org/
 335                         https://www.tornevall.net/
 336                         related to https://www.fraudbl.org/
 337                         seems a bit unstructured and not very well documented
 338                                 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
 339                         seems active
 340                 http://rbl.schulte.org/
 341                         seems active
 342                         listing policy seems to be: they received spam from an IP
 343                         usage policy: Anyone can use this RBL list [sic]
 344                         return codes: probably boolean, i.e. either listed or not
 345                 http://relaytest.kundenserver.de/
 346                         by 1und1 (now ionos?), used internally
 347                         https://www.blalert.com/dnsbl/relays.bl.kundenserver.de
 348                         no usage policy found
 349                         no listing policy found
 350                         no return code explanation found
 351                 http://www.blockedservers.com/
 352                         no usage policy
 353                         no listing policy
 354                         no documentation
 355                         "funny":
 356                                 No rights given; all rights are in the dumpster; Copyleft 2012 - 3013 - page generated in 0.009843111038208 secs
 357         00_E_PAID
 358         00_E_PRIVATE
 359                 88.blacklist.zap
 360                         http://blogs.technet.com/b/fss/archive/2009/05/08/forefront-dnsbl-yeah-or-nay.aspx
 361                         https://web.archive.org/web/20150812003556/http://blogs.technet.com/b/fss/archive/2009/05/08/forefront-dnsbl-yeah-or-nay.aspx
 362                         https://www.blalert.com/dnsbl/88.blacklist.zap
 363                                 88.blacklist.zap is an internal blacklist maintained by Microsoft's Forefront
 364                         https://www.dnsbl.com/search/label/frontbridge
 365                 http://drmx.org/
 366                         »Use of any DrMX.ORG DNS Zone is by request and by contract only.«
 367                 rbl.tdk.net
 368                         tdk.net seems dead on http(s)
 369                         private
 370                                 https://www.blalert.com/dnsbl/rbl.tdk.net
 371                         old link: http://postmaster.tdc.dk/publish.php?id=31787
 372                                 tdc.dk redirects to yousee.dk
 373                                 https://web.archive.org/web/20170703084224/http://postmaster.tdc.dk/publish.php?id=31787
 374                 rbl.zenon.net
 375                         private
 376                                 https://www.blalert.com/dnsbl/rbl.zenon.net
 377                         http://www.noc.zenon.net/rbl/
 378                         russian(?)
 379                 https://ahbl.org/
 380                         was public until 2015
 381                         now private, invite-only
 382         http://rfc-clueless.org/
 383                 lists domains
 384                         that do not adhere to common best practices or requirements
 385                 does NOT list spammers!
 386                 listing criteria are explained well
 387                         http://rfc-clueless.org/pages/listing_policy
 388                 return codes are explained
 389                         http://rfc-clueless.org/
 390                 usage policy is not so clear but the FAQ implies that it’s just free to use for everyone
 391                 many timeouts
 392                         first noticed in 2014 and deactivated
 393                         retried in 2023 and still the case
 394         http://spameatingmonkey.com/
 395                 lists IPs
 396                         that sent backscatter
 397                         that sent to spamtrap
 398                         added by policy
 399                                 this includes dial-up!
 400                                 https://spameatingmonkey.com/faq/policy-based-listing
 401                 lists domains/URIs
 402                         by age
 403                         in spam bodies
 404                 usage policy seems clear
 405                         https://spameatingmonkey.com/faq/query-limits
 406                 listing policy seems clear
 407                         https://spameatingmonkey.com/services
 408                 return codes documented
 409                         https://spameatingmonkey.com/services
 410                 http://blogspambl.com/
 411                         redirects to spameatingmonkey.com
 412         http://uribl.com/
 413                 lists domains/URIs
 414                         that appear in spam bodies
 415                         has whitelist
 416                 lists IPs
 417                         that URIs in spam bodies resolve to
 418                 return codes are documented
 419                         https://uribl.com/about.shtml#implementation
 420                         bitmasked
 421                         127.0.0.1 is used to signal abusive query behaviour
 422         http://wiki.junkemailfilter.com/index.php/Spam_DNS_Lists
 423                 called "hostkarma"
 424                 lists domains/URIs
 425                 lists IPs
 426                 usage policy is relatively clear that it’s free, except maybe for big for-profit oranizations
 427                 listing policy is documented
 428                 return codes are documented
 429                 seems very trustworthy
 430         http://www.sorbs.net/
 431                 good reputation
 432                 lists domains/URIs
 433                 lists IPs
 434                 usage policy is clear that it’s free
 435                 listing policy is documented
 436                 return codes are documented
 437                 seems trustworthy
 438         http://www.spamhaus.org/
 439                 good reputation
 440                 very well done
 441                 seems very professional
 442                 lists domains/URIs
 443                 lists IPs
 444                 usage policy is clear
 445                         https://www.spamhaus.org/organization/dnsblusage/
 446                 listing policies are clearly documented
 447                 return codes are clearly documented
 448         http://www.surbl.org/
 449                 good reputation
 450                 lists domains/URIs
 451                 usage policy is clear
 452                         https://surbl.org/usage-policy
 453                 listing policy is documented
 454                 return codes are documented
 455                         bitmasked
 456                         127.0.0.1 means blocked
 457         http://zapbl.net/
 458                 lists domains/URIs
 459                 lists IPs
 460                 listing policy seems clear
 461                         https://zapbl.net/policy
 462                 usage policy seems clearly free for everyone
 463                         https://zapbl.net/using
 464                 return codes are documented
 465                 seems well done
 466         https://rbl.foobar.hu/
 467                 lists domains/URIs
 468                 lists IPs
 469                 listing policy seems clear
 470                 usage policy seems clearly free for everyone
 471                 return codes are documented
 472                 possibly unmaintained or dead
 473                         footer says: ©2013-14
 474         http://apews.org/?page=filter
 475                 questionable
 476                         https://www.dnsbl.com/search/label/apews
 477                         https://whatismyipaddress.com/apews
 478                 dead?
 479                         no news on http://apews-user.blogspot.com/ since 2014
 480                 not further looked into because of the above
 481         https://www.dnswl.org/
 482                 seems to be run with best intentions but has had issues from what I have heard from some users
 483                 IRC channel has some activity
 484                 usage policy relatively clear
 485                         free within certain limits
 486                 listing policy
 487                         self-service
 488                 return codes are documented
 489         00_E_FOCUS
 490                 https://www.dnsblchile.org/index.en.html
 491                         chilenian spam so not interesting for me
 492                         seems alive
 493         00_LISTS_BLOGSPAMMERS
 494                 https://www.madavi.de/madavibl/
 495                         »This blacklist should only be used to block comment spammer (on blogs and websites). Don’t use it for mail.«
 496                 http://bsb.empty.us/
 497                         does not exist anymore
 498                         empty.us returns »Nothing here, obviously.«
 499         00_LISTS_COUNTRIES
 500                 korea
 501                         http://korea.services.net/
 502         00_LISTS_DIALUPS
 503         00_LISTS_OPENRESOLVERS
 504         00_LISTS_TORNODES
 505                 https://www.dan.me.uk/dnsbl
 506                 http://rbl.efnetrbl.org/
 507                         aka http://tor.efnet.org/
 508                         lists IPs
 509                         lists open proxies, infected machines, tornodes, etc.
 510         https://0spam.org/
 511                 clear information on usage policy
 512                         Nothing. The 0Spam Project is absolutely free for email providers, IT professionals and general removal request.
 513                         DNSBL service and removals are 100% for free for all uses; commercial, non profit and personal.
 514                 seems serious
 515                 listing policies are a little less clear
 516                         bl.0spam.org DNSBL | 0spam Spam Trap Primary Database
 517                         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.
 518                         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.
 519                 return codes not very clear
 520         https://abuse.ro/
 521                 policy
 522                         spamtraps
 523                         The last IP address before destination in the email headers is listed into rbl.abuse.ro list.
 524                         Sender domains are analyzed and if confirmed to be not spoofed, are listed into dbl.abuse.ro list
 525                         Spamvertized domains (including those indirectly linked through services like bit.ly) are listed into uribl.abuse.ro list
 526         http://dronebl.org/
 527                 usage policy is clear: free for whatever
 528                 listing policy is not quite so clear
 529                         can be mostly inferred from the classes but not entirely clear IMHO
 530                 has an IRC channel
 531                 return codes
 532                         not explicitly mentioned but it’s 127.0.0.X where X is the class from https://dronebl.org/classes
 533         http://psbl.org/
 534                 query zone: psbl.surriel.com
 535                 no usage policy, but seems implied that usage is free
 536                 listing policy
 537                         no explicit, complete policy given but sending to spamtraps is mentioned to get you listed and seems the exclusive mechanism
 538                 return codes
 539                         not documented, probably only boolean
 540         http://rbldata.interserver.net/
 541                 listing policy more or less clear
 542                 usage policy not given but since usage is explained it’s probably free for all
 543                 return codes seem to be binary, i.e. either listed or not
 544                 lists IPs
 545                 lists domains/URIs
 546         http://rv-soft.info/
 547                 usage policy not explicit but seems to be free
 548                 listing policy also not explicit but can be inferred from return code explanation
 549                 return codes are explained
 550         http://spamrats.com/
 551                 clear usage policy (ToS)
 552                 listing policies documented
 553                 return codes of aggregated list documented
 554                 lists IPs
 555         http://v4bl.org/
 556                 usage policy documented
 557                 listing policy not really clear
 558                 return codes documented
 559         http://wpbl.info/
 560                 listing procedure is documented
 561                 usage policy implied: free to use
 562                 return codes documented
 563         http://www.aupads.org/
 564                 aka www.antispam-ufrj.pads.ufrj.br
 565                 aka www.orve.org
 566                 listing policy more or less clear
 567                 lists IPs and FQDNs
 568                 usage policy seems clear: freely exported by anybody who wants to use them«
 569         http://www.blocklist.de/en/index.html
 570         http://www.emailbasura.org/cgi-bin/emailbasura-ini.pl?lang=eng
 571         http://www.gbudb.com/truncate/
 572         http://www.justspam.org/
 573         http://www.kempt.net/dnsbl/
 574         http://www.leadmon.net/spamguard/
 575         http://www.spamcop.net/
 576                 good policy
 577                 good reputation
 578         http://www.spamsources.fabel.dk/
 579                 sensible policy
 580         http://www.srntools.com/blacklist/
 581         http://www.uceprotect.net/en/index.php
 582         https://bl.konstant.no/
 583         https://choon.net/rbl.php
 584         https://www.abuse.ch/
 585                 https://www.abuse.ch/?tag=httpbl
 586         https://www.kisarbl.or.kr/
 587         https://www.megarbl.net/
 588         https://www.team-cymru.org/Services/Bogons/dns.html
 589         http://mailspike.net/usage.html
 590                 reputation-based
 591         http://www.whitelisted.org/
 592                 paid subscription
 593                 policy on site
 594         https://puck.nether.net/or/
 595                 policies on website
 596         http://www.isipp.com/email-accreditation/iadb-query-instruction/
 597                 requires signup
 598                 not quite a usage policy, but seems ok
 599                 strange split of ipv4 and ipv6
 600                 seems dead?