Subject

developer.mozilla.org

Issuer

Let's Encrypt · YR2

Valid

Sep 23, 2026 → Dec 22, 2026

Names covered

*.mdnplay.dev
developer.mozilla.org
mdnplay.dev

Protocol

TLS 1.2 ECDHE-RSA-AES128-GCM-SHA256

Key

RSA 2048-bit

Signature

SHA-256 with RSA

Serial

05:6D:48:F9:93:47:88:AE:AD:DB:36:EF:D0:0C:60:2D:3D:3D

SHA-256

E8:8A:E6:3F:F4:46:09:D9:38:36:6F:64:6C:C3:38:A1:CB:87:1E:5F:3A:4F:78:D0:BD:25:20:65:11:3B:5E:8C

Chain sent by the server

1. developer.mozilla.org issued by YR2 · expires Dec 22, 2026
2. YR2 issued by Root YR · expires Sep 2, 2028
3. Root YR issued by ISRG Root X1 · expires Sep 2, 2032