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