SSL Certificate Analysis for akairo.de - Security Grade & TLS Configuration

Detected Technologies

See all in URL Inspect 1

Let's Encrypt

Certificate Information

Subject

CN=abholsolar.de

Issuer

C=US, O=Let's Encrypt, CN=R13

Valid From

January 17, 2026

Valid Until

April 17, 2026 50 days

Public Key

RSA 4096 bit Strong

Signature Algorithm

SHA256-RSA

SHA-256 Fingerprint

9E:FF:3B:D5:DB:F8:19:CF:9D:25:DC:B5:BD:5B:0B:33:BD:7F:B3:CF:58:FD:A7:A4:29:96:5F:3B:A9:FF:26:8B

Alternative Names

90 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=31536000; includeSubDomains; preload

Content-Security-Policy

Missing

Not configured 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

Permissions-Policy

Present

geolocation=(), midi=(), sync-xhr=(); +6 more

Recommendations

• Add Content-Security-Policy header to prevent XSS attacks

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