~/tools / ssl-checker

SSL Checker

Check SSL certificate expiry, chain validity, TLS version and cipher. Catches expired certs, weak crypto and chain issues.

>
[ OK ] Valid for 307 more days.
── output ─────
Issued to
*.mediamarkt.nl
Issued by
GeoTrust TLS RSA CA G1
Valid from
2026-02-23
Valid until
2027-02-22 (307 days)
TLS version
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384
Key
RSA · 2048 bit
Signature
sha256WithRSAEncryption
Forward secrecy
yes
Self-signed
no
Must-staple
no
SHA-256 fingerprint
BB:D5:70:93:3E:43:FC:1E:A4:18:DA:06:C1:A0:35:22:E2:B6:A6:14:EA:63:FE:08:86:29:D4:CA:CC:64:77:34
Serial
0591BABF665E8074553206DB60F5533D
subject_alt_names · 2
*.mediamarkt.nl mediamarkt.nl
certificate_chain · 3 certs
[ leaf ]*.mediamarkt.nl
307 days left
issuer: GeoTrust TLS RSA CA G1
2026-02-23 → 2027-02-22
[ inter ]GeoTrust TLS RSA CA G1
559 days left
issuer: DigiCert Global Root G2
2017-11-02 → 2027-11-02
[ inter ]DigiCert Global Root G2
2028 days left
issuer: DigiCert Global Root CA
2024-01-18 → 2031-11-09
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