As an IT specialist for my district, what should I allow through our firewall so students can access CommonLit?

Accessing CommonLit:

  • Port 443 must be open.
  • The network should open firewalls for,,,,, and subdomains. 
  • The network should allow access to
  • CommonLit is on a cloud provider that frequently shifts IP addresses, and as such does not have a stable IP range.
  • The CommonLit site runs on React JavaScript and occasionally, browser extensions can disrupt JavaScript, so limiting the use of new and untested browser extensions is encouraged.

Accessing CommonLit Support:

Accessing third-party materials linked on CommonLit: