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SSL Certificate

Analyze SSL/TLS certificates for any website, checking issuer details, validity period, expiration warnings, and alternative names.

Quick Examples: google.com github.com cloudflare.com wikipedia.org
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Turkey National Cyber Security Status (USOM)

SAFE: No active restrictions found in USOM registry
Clean / Allowed
B
Security Grade B • Overall Certificate Health Verdict

Incomplete Certificate Chain Detected

data2.web.az → 217.14.97.20:443 Port 443 Open • 204.21 ms Connection Latency

Cryptographic Key Matching
Target Domain
Matches Requested Hostname
Chain Integrity
Chain Incomplete
Time Remaining
80 Days Remaining
Cipher Suite
TLSv1.3 • 256 bits

Server Configuration Remediation Guides

1 Diagnostics
critical

Incomplete Certificate Chain Detected

Download Intermediate Certificate (.crt)

The server is missing the intermediate certificate (ISRG Root X1). While some desktop browsers may cache it, mobile devices, Android, curl, and automated API clients will fail with an untrusted certificate error.

The certificate chain has a broken link. Intermediate certificate for "ISRG Root X1" is missing or out of order.
Bundle the intermediate CA certificate with your server certificate into a single file and reconfigure your web server.
Server Guides:
NGINX CONFIGURATION 
cat your_domain.crt intermediate.crt > fullchain.pem
# In nginx.conf:
ssl_certificate /path/to/fullchain.pem;
ssl_certificate_key /path/to/privkey.key;

Server Certificate Chain Hierarchy

5 Certificate(s)
1 Server Certificate (Leaf)
Matches Requested Hostname Valid
Common Name (CN) data2.web.az Issued By: YR2
Validity Encryption
29.10.2026 02:04 → 27.01.2027 02:04
RSA 4096 bits • sha256WithRSAEncryption
⚠️ Intermediate Certificate Missing on Server
Download Intermediate Certificate

The server is only delivering the leaf certificate and is missing the intermediate CA certificate (ISRG Root X1).

2 Valid Intermediate Certificate
Valid Intermediate Certificate
Common Name YR2 Let's Encrypt
Validity Issuer
2025-09-03 00:00:00 → 2028-09-02 23:59:59
Issuer: Root YR
3 Trusted Root Certificate Authority
Trusted Root CA
Common Name Root YR ISRG
Validity Issuer
2026-05-13 00:00:00 → 2032-09-02 23:59:59
Issuer: ISRG Root X1
4 Valid Intermediate Certificate
Valid Intermediate Certificate
Common Name YR2 Let's Encrypt
Validity Issuer
2025-09-03 00:00:00 → 2028-09-02 23:59:59
Issuer: Root YR
5 Trusted Root Certificate Authority
Trusted Root CA
Common Name Root YR ISRG
Validity Issuer
2026-05-13 00:00:00 → 2032-09-02 23:59:59
Issuer: ISRG Root X1

Cryptographic Certificate Specifications

Common Name (CN) data2.web.az
Signature Algorithm sha256WithRSAEncryption
Serial Number (HEX) 050EACA5DF2E88CF15A0468CABA7D9A71C3F
SHA-256 Fingerprint A2:C9:3D:D4:EF:B1:C3:92:D2:72:B4:97:54:6B:FF:CA:C5:53:91:8A:FD:E6:9F:DC:4C:FF:DE:55:48:3C:31:51
Valid From 29.10.2026 02:04
Valid To / Expiry 27.01.2027 02:04
Issuer String YR2
Key Parameters RSA 4096 bits
Subject Alternative Names (SANs) (3)
data2.web.az mail.data2.web.az www.data2.web.az