emacswimlessons.org
HTML metadata
Technology
- Server
- nginx
Third-party hosts loaded (6)
- dd-cdn.multiscreensite.com×4
- irp.cdn-website.com×4
- lirp.cdn-website.com×4
- static.cdn-website.com×4
- irp-cdn.multiscreensite.com×2
- ms-cdn.multiscreensite.com×1
Social
Registration
- Registrar
- GoDaddy.com, LLC
- Created
- 2020-05-26
- Expires
- 2030-05-26 1467 days left
- Updated
- 2025-07-10
- Name servers
-
- ns1.oneelevendns.com
- ns2.oneelevendns.com
- ns3.oneelevendns.com
- ns4.oneelevendns.com
DNS records live
- NS
-
- ns1.oneelevendns.com
- ns2.oneelevendns.com
- ns3.oneelevendns.com
- ns4.oneelevendns.com
- MX
-
- 0 emacswimlessons.org
Email authentication weak
- SPF
- not published
- DMARC
- not published
- DKIM
- no key found at common selectors
Certificate (current)
R13
Expires in 77 days
HTTP security headers
- present
-
- strict-transport-security
- content-security-policy
- x-frame-options
- x-content-type-options
- findings
-
- missing Referrer Policy
- missing Permissions Policy
Header values
- x-frame-options
SAMEORIGIN- x-content-type-options
nosniff- content-security-policy
frame-ancestors 'self'- strict-transport-security
max-age=31536000; preload