added robotex.com

- signed-off-by: trimstray <trimstray@gmail.com>

README.md

@@ -257,6 +257,7 @@ for transferring data with URLs.<br>
 <p>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://toolbar.netcraft.com/site_report"><b>Netcraft</b></a> - detailed report about the site, helping you to make informed choices about their integrity.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://www.ripe.net/"><b>RIPE NCC</b></a> - not-for-profit membership association, a Regional Internet Registry and the secretariat for the RIPE.<br>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://www.robtex.com/"><b>Robtex</b></a> - uses various sources to gather public information about IP numbers, domain names, host names, routes etc.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://securitytrails.com/"><b>Security Trails</b></a> - APIs for Security Companies, Researchers and Teams.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://tools.keycdn.com/curl"><b>Online Curl</b></a> - curl test, analyze HTTP Response Headers.<br>
 &nbsp;&nbsp;:small_orange_diamond: <a href="http://ping.eu/"><b>Ping.eu</b></a> - online Ping, Traceroute, DNS lookup, WHOIS and others.<br>