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classes.de

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Fetching the TLS certificate

TLS certificate

The certificate is in date but the chain did not verify.

Untrusted85 days left

Certificate

Issuer: WR4 (Google Trust Services)
Subject: firebaseapp.com

Validity

Valid from: Jul 20, 2026
Valid to: Oct 18, 2026

Connection

Protocol: TLSv1.3
Key: RSA 2048
Cipher: TLS_AES_128_GCM_SHA256 (TLSv1.3)

Subject alternative names (2)

firebaseapp.com
*.firebaseapp.com

Chain

01
firebaseapp.com
issued by WR4 (Google Trust Services)
02
WR4 (Google Trust Services)
issued by GTS Root R1 (Google Trust Services LLC)
03
GTS Root R1 (Google Trust Services LLC)
issued by GlobalSign Root CA (GlobalSign nv-sa)
04
GlobalSign Root CA (GlobalSign nv-sa)
root

Fingerprint

SHA-256: 41:1A:A9:F5:A1:0A:E3:6C:32:69:52:DF:66:A5:16:11:47:55:A8:3A:03:C9:81:A5:A6:3B:77:0E:AC:52:93:26
Serial number: 6D012821E6EBEA0F0AD8C9B61791C69F