It is running NGINX from somewhere…
curl -Iki https://crexspace.com/
HTTP/1.1 200 OK
Server: nginx/1.12.2
Date: Mon, 04 Nov 2019 13:18:23 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 50979
Connection: keep-alive
X-Powered-By: Next.js 5.0.0
ETag: "c723-aRhCNVn3C/Ky9/63TGWCNBYGsUs"
Vary: Accept-Encoding
Please show:
which nginx
If that shows it, try:
nginx -T | grep -Ei 'ssl_cert|crexspace|listen|virtual|server_name'