Server Name Indication (SNI): How One Server Hosts Hundreds of HTTPS Sites

• 29 June 2026
• by: Gustav Holmberg
• in: SSL Certificates
• Tags: server name indication, sni, TLS
• note: no comments

Server Name Indication (SNI) is the TLS extension that lets one IP serve many HTTPS sites. Learn what SNI is, how it works, and why it powers shared hosting.

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