jsDelivr (www.jsdelivr.com): Post-Quantum TLS Check

What this means for you

In our TLS 1.3 test of www.jsdelivr.com on Oct 18, 2026, the server chose X25519MLKEM768, a hybrid key exchange that combines classical X25519 with ML-KEM-768, the NIST FIPS 203 post-quantum standard. A browser that offers the same group can get the same key exchange; the session keys of such a connection are designed to resist decryption later with a quantum computer, even if the traffic is recorded today.

For your own site, the key exchange is decided by whatever ends the TLS connection (your web server, your host or your CDN): our hosting checker names the provider behind a domain, and our hosting price tracker shows what the plans we check cost at purchase and at renewal.