1. Home
  3. SSL Certificate
  5. nic.courses

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

Turkey National Cyber Security Status (USOM)

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

Hostname Certificate Mismatch

nic.courses → 54.85.227.149:443 Port 443 Open • 456.45 ms Connection Latency

Cryptographic Key Matching
Target Domain
Hostname Certificate Mismatch
Chain Integrity
Chain Complete
Time Remaining
95 Days Remaining
Cipher Suite
TLSv1.2 • 128 bits

Server Configuration Remediation Guides

1 Diagnostics
critical

Hostname Certificate Mismatch

The domain "nic.courses" is not covered by this SSL certificate. Browsers will display a full security interstitial warning blocking visitors.

Certificate is issued for: *.usparking.neustar.us, usparking.neustar.us
Reissue the certificate to include "nic.courses" in Subject Alternative Names (SANs) or reconfigure web server virtual hosts.

Server Certificate Chain Hierarchy

3 Certificate(s)
1 Server Certificate (Leaf)
Hostname Certificate Mismatch Valid
Common Name (CN) *.usparking.neustar.us Issued By: Amazon RSA 2048 M04
Validity & Encryption
02.01.2026 00:00 → 30.01.2027 23:59
RSA 2048 bits • sha256WithRSAEncryption
2 Trusted Root Certificate Authority
Trusted Root CA
Common Name Amazon RSA 2048 M04 Amazon
Validity & Issuer
2022-08-23 22:26:35 → 2030-08-23 22:26:35
Issuer: Amazon Root CA 1
3 Trusted Root Certificate Authority
Trusted Root CA
Common Name Amazon Root CA 1 Amazon
Validity & Issuer
2015-05-25 12:00:00 → 2037-12-31 01:00:00
Issuer: Starfield Services Root Certificate Authority - G2

Cryptographic Certificate Specifications

Common Name (CN) *.usparking.neustar.us
Signature Algorithm sha256WithRSAEncryption
Serial Number (HEX) 02F54873D46057CF20D4F64EEFB3201F
SHA-256 Fingerprint 1619bd4b052a264535f00ab972e7b9bbd3fc697bb904fb01d0797ef61f14d4f9
Valid From 02.01.2026 00:00
Valid To / Expiry 30.01.2027 23:59
Issuer String Amazon RSA 2048 M04
Key Parameters RSA 2048 bits
Subject Alternative Names (SANs) (2)
*.usparking.neustar.us usparking.neustar.us