Encrypted Client Hello (ECH) is now supported on Vercel CDN
UpdateVerifiedAdded Sep 22, 2026
Vercel CDN now supports Encrypted Client Hello (ECH) for domains managed by Vercel DNS. ECH encrypts the Server Name Indication (SNI) in the TLS handshake, the last part of an HTTPS connection that revealed which hostname a client was connecting to. With ECH, network observers see a connection to Vercel's shared ECH hostname, vercel-ech.com .
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