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