Works fine here, even over Tor - Firefox 70.0.1 with javascript.enabled=false in about:config.
<html>
<head>
<META NAME="robots" CONTENT="noindex,nofollow">
<script src="/_Incapsula_Resource?SWJIYLWA=5074a744e2e3d891814e9a2dace20bd4,719d34d31c8e3a6e6fffd425f7e032f3">
</script>
<body>
</body></html>
And then if I curl:https://www.nccgroup.trust/_Incapsula_Resource?SWJIYLWA=5074...
Then I get an obfuscated Javascript blob:
I can't understand how this page could work on any browser that doesn't enable Javascript.
The only possible explanation I can think of is that it must be sending different content based on user agent, or something, though messing around with sending different user agents via "wget -U" gets me more or less the same thing.
Edit: the page loads for the first time after assigning a new IP in Tor, but subsequent loads throw the captcha. Odd system.