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CertLook

Check your website's SSL certificate and chain

CSR Decoder

SSL Certificate Report

SSL Status Valid
Chain Status Valid
Certificate Authority Google Trust Services
Organization Google Trust Services
Common Name cloudflare.com
SAN Domains
cloudflare.com
ns.cloudflare.com
*.ns.cloudflare.com
*.secondary.cloudflare.com
secondary.cloudflare.com
Hostname cloudflare.com
IP Address 104.16.132.229
Port 443
Start Date 2026-03-12 20:59:51
End Date 2026-06-10 21:59:46
Days Remaining 60
Algorithm ecdsa-with-SHA256
Fingerprint DA9FCA34E821865E3066DB0F029492013B6517F14AAF5A693ABDE9A48A174C19
Performance 11.76 ms
Supported Protocols TLS 1.2
Name Servers
ns3.cloudflare.com
ns4.cloudflare.com
ns5.cloudflare.com
ns6.cloudflare.com
ns7.cloudflare.com
SSL Compatibility A (90%)
Mobile Support 3/3 Supported
Browser Support 4/4 Supported
Perfect Forward Secrecy Yes
HSTS Enabled Yes
Certificate Transparency Yes
Cipher Suites
ECDHE-RSA-AES256-GCM-SHA384
ECDHE-RSA-AES128-GCM-SHA256
ECDHE-RSA-CHACHA20-POLY1305

Certificate Chain

Chain Length: 3 certificates

cloudflare.com
Certificate Authority: WE1
Valid: Yes (2026-06-10 21:59:46)
leaf
WE1
Certificate Authority: GTS Root R4
Valid: Yes (2029-02-20 14:00:00)
intermediate
GTS Root R4
Certificate Authority: GlobalSign Root CA
Valid: Yes (2028-01-28 00:00:42)
intermediate

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API Usage

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Usage Examples

JSON format

GET certlook.tr/?domain=example.com&o=json
Demo Verisi (JSON)

Text format

GET certlook.tr/?domain=example.com&o=text
Demo Verisi (TEXT)
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