What is sni.cloudflaressl.com and what purpose does it serve?

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Grade: Education Subject: Support
What is sni.cloudflaressl.com and what purpose does it serve?
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sni.cloudflaressl.com is a hostname used by Cloudflare to provide SSL/TLS certificates for websites using the Server Name Indication (SNI) extension. It allows Cloudflare to serve multiple websites from a single IP address, providing SSL encryption for each site without requiring dedicated IP addresses for each.