diff --git a/README.md b/README.md
index 095809f..f12b9c8 100755
--- a/README.md
+++ b/README.md
@@ -611,15 +611,12 @@ algorithms, knowledgebase and AI technology.
 * [Knowledge guide to international company registration](http://www.icaew.com/en/library/subject-gateways/business-management/company-administration/knowledge-guide-international-company-registration)
 * [Linkedin](https://www.linkedin.com)
 * [National Company Registers](https://en.wikipedia.org/wiki/List_of_company_registers)
-* [MarketVisual](http://www.marketvisual.com)
 * [Mergent Intellect](http://www.mergentintellect.com)
 * [Mergent Online](http://www.mergentonline.com/login.php)
-* [Morningstar Research](http://library.morningstar.com)
 * [Notablist](https://www.notablist.com)
 * [Orbis directory](http://orbisdirectory.bvdinfo.com/version-20161014/OrbisDirectory/Companies)
 * [OpenCorporates](https://opencorporates.com) - Global search of registered corporate entities and their associated individual officers or investors.
 * [OpenOwnership Register](https://register.openownership.org/)
-* [Owler](https://www.owler.com)
 * [Overseas Company Registers](https://www.gov.uk/government/publications/overseas-registries/overseas-registries)
 * [Plunkett Research](http://www.plunkettresearchonline.com)
 * [Scoot](http://www.scoot.co.uk)
@@ -685,10 +682,8 @@ algorithms, knowledgebase and AI technology.
 * [DNS History](http://dnshistory.org)
 * [DNSStuff](http://www.dnsstuff.com)
 * [DNSViz](http://dnsviz.net)
-* [Domain Big Data](http://domainbigdata.com)
 * [Domain Crawler](http://www.domaincrawler.com)
 * [Domain Dossier](http://centralops.net/co/DomainDossier.aspx)
-* [Domain History](http://www.domainhistory.net)
 * [Domain Tools](http://whois.domaintools.com) - Whois lookup and domain/ip historical data.
 * [Easy whois](https://www.easywhois.com)
 * [Exonera Tor](https://exonerator.torproject.org) - A database of IP addresses that have been part of the Tor network. It answers the question whether there was a Tor relay running on a given IP address on a given date.
@@ -708,7 +703,6 @@ algorithms, knowledgebase and AI technology.
 * [NetworkTools](http://network-tools.com)
 * [Majestic](https://majestic.com)
 * [MaxMind](https://www.maxmind.com)
-* [MXToolbox](http://origin.mxtoolbox.com) - MX record lookup tool.
 * [Netcraft Site Report](http://toolbar.netcraft.com/site_report?url=undefined#last_reboot)
 * [OpenLinkProfiler](http://www.openlinkprofiler.org/ratelimit/domain.com)
 * [Open Site Explorer](https://moz.com/researchtools/ose)