What does a bare HTTP connection have to do with this link? The site uses HTTPS.
Here is the FCC Complaint Center: https://consumercomplaints.fcc.gov/hc/en-us
I can see that blocking IP ranges is part of a strategy to protect service signups, logins, or contact forms. But a gov agency publishing a piece of text? What's the risk that is mitigated by blocking IPs here?