Your DNS requests do reach an rtProtect edge, which is why this page loaded. The network you are on is not registered to any site, so they are refused. Give the details below to whoever manages rtProtect for you.
The site and policy above are for your public address; the device list (when shown) is what the relay reported for the lookup that opened this page. For the full picture, run nslookup -type=txt check.rtprotect.net (Windows) or dig txt check.rtprotect.net +short on the device.