SSL Certificate Analysis for duocircle.com - Security Grade & TLS Configuration

Detected Technologies

See all in URL Inspect 17

Let's Encrypt

Umami Analytics

Albacross

Cloudflare Turnstile

Cloudflare Web Analytics

Elfsight

Facebook

G2

Google AdSense

Google Analytics

Google Conversion Tracking

Google DoubleClick

Google Fonts

Google Tag Manager

Microsoft Clarity

Site24x7

Zoho Mail

Certificate Information

Subject

CN=duocircle.com

Issuer

C=US, O=Let's Encrypt, CN=YR2

Valid From

July 07, 2026

Valid Until

October 05, 2026 60 days

Public Key

RSA 2048 bit Adequate

Signature Algorithm

SHA256-RSA

SHA-256 Fingerprint

18:44:B9:EB:95:37:66:C9:DB:9C:AB:29:9A:65:1D:64:85:28:4E:56:5B:B0:A9:CE:4B:23:A1:D2:47:8B:E4:EE

Alternative Names

1 domains

Security Configuration

TLS Protocols

TLS 1.2 TLS 1.3

Forward Secrecy

Supported (Modern clients use PFS)

HTTP Security Headers

Status

Strict-Transport-Security

Excellent

max-age=63072000; includeSubDomains; preload

Content-Security-Policy

Good

default-src; script-src; style-src; +9 more Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Excellent

DENY

X-Content-Type-Options

Good

nosniff

Referrer-Policy

Good

strict-origin-when-cross-origin

Permissions-Policy

Present

camera=(), microphone=(), geolocation=(); +1 more

Recommendations

• Strengthen CSP by removing 'unsafe-eval'

CAA Records (Certificate Authority Authorization)

CAA Records

Not Configured (Any CA can issue certificates)

CAA Issues

• No CAA records configured - any CA can issue certificates

Recommendations

• Implement CAA records to restrict which CAs can issue certificates for your domain
• This adds an extra layer of security against unauthorized certificate issuance
• Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
• Consider adding 'iodef' record to receive security incident reports

Subject Alternative Names

1 domain

duocircle.com