Any false positives will need to be reported to IT-EntSec queue.
The Enterprise Security team enabled the Internet firewall to block specific known categories of dangerous websites beginning September 2017. If anyone is wondering why a website is being blocked look at the “Category” field on the block page to find out how the website is classified.
...
Not Resolved: Indicates that the website was not found in the local URL filtering database and the firewall was unable to connect to the cloud database to check the category. Note, If you get this category wait a few minutes and try the link or URL again.
Parked: URLs which host limited content or click-through ads which may generate revenue for the host entity but generally do not contain content that is useful to the end user and has the potential to contain malicious content.
...
For additional information see Web Page Blocked in Accordance with University PolicyAny false positives will need to be reported to IT-EntSec queue.