Certificate Chain Deep Dive

Comprehensive certificate chain validation and CRL revocation analysis.

HTTPS://

Try these examples:

✅ Valid Chain ❌ Revoked Certificate ⚠️ Incomplete Chain

incomplete-chain.badssl.com

2/17/2026, 4:37:07 am UTC

Certificate Chain Validation

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

Issues:

  • Missing intermediate certificate(s) - browsers may not be able to build complete trust chain

Warnings:

  • Server should include intermediate certificates in the certificate bundle

Certificate Details

End Entity

Leaf Certificate
Download PEM
Subject: *.badssl.com
Issuer: R13
Serial (Decimal): 0x06171E8FCA260A2A33194F1BE5A775E1C5ED
Serial (Hex): 06171E8FCA260A2A33194F1BE5A775E1C5ED

Valid From: 2026-01-20 20:02:51

Valid Until: 2026-04-20 20:02:50

Signature: RSA-SHA256

Version: 3

CRL Revocation Status:

✅ Certificate not found in CRL (not revoked)

CRL size: 228321 bytes

CRL URL

http://r13.c.lencr.org/110.crl