52Fair

one.one

scanned 4/9/2026 in 0.8s

SSL

Headers

✓

Valid certificate from Let's Encrypt

Expires: 7/6/2026 (88 days)

✓

Protocol: TLSv1.3

Key: 4096 bits

SANs: one.one

Read guide: How to Get an A+ SSL Rating →

Monitor one.one

Things break silently. Get alerts when your SSL expires, headers change, or your score drops.

!SSL certificate expires in 88 days
!No DMARC record — your domain can be spoofed
!No HSTS header — browsers won't enforce HTTPS
!Security headers grade F — most headers missing

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