[Network Administrator / IT Support / ISP Support]
Here’s a properly formatted request you can use, depending on who you’re sending it to (e.g., your network administrator, IT support, or ISP): Request to Unblock challenges.cloudflare.com please unblock challenges.cloudflare.com
I am writing to request that the domain challenges.cloudflare.com be unblocked on our network. [Network Administrator / IT Support / ISP Support]