Certificate Chain Deep Dive

Comprehensive certificate chain validation and CRL revocation analysis.

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Try these examples:

✅ Valid Chain ❌ Revoked Certificate ⚠️ Incomplete Chain

revoked-isrgrootx1.letsencrypt.org

8/6/2025, 7:41:13 am UTC

Certificate Chain Validation

❌ Certificate chain has issues that may prevent browsers from trusting it.

Issues:

  • Certificate 'revoked-isrgrootx1.letsencrypt.org' is REVOKED

Certificate Details

End Entity

Leaf Certificate
Download PEM
Subject: revoked-isrgrootx1.letsencrypt.org
Issuer: R10
Serial (Decimal): 0x05FCFE739210F39141542B641255E0D21CAE
Serial (Hex): 05FCFE739210F39141542B641255E0D21CAE

Valid From: 2025-07-23 15:02:00

Valid Until: 2025-10-21 15:01:59

Signature: RSA-SHA256

Version: 3

CRL Revocation Status:

❌ Certificate is REVOKED (found in CRL)

CRL size: 129520 bytes

CRL URL

http://r10.c.lencr.org/47.crl

Root CA

Download PEM
Subject: R10
Issuer: ISRG Root X1
Serial (Decimal): 100566080436859127493189557861323994576
Serial (Hex): 4BA85293F79A2FA273064BA8048D75D0

Valid From: 2024-03-13 00:00:00

Valid Until: 2027-03-12 23:59:59

Signature: RSA-SHA256

Version: 3