cf-learn.info
HTML metadata
Technology
- CDN
- Netlify
- CMS
- Hugo 0.105.0
- Fonts
-
- Google Fonts
Third-party hosts loaded (2)
- leanpub.com×2
- fonts.googleapis.com×1
Social
Registration
- Registrar
- Porkbun LLC
- Created
- 2011-08-10
- Expires
- 2027-08-10 432 days left
- Updated
- 2026-05-30
- Name servers
-
- dns4.p02.nsone.net
- dns3.p02.nsone.net
- dns2.p02.nsone.net
- dns1.p02.nsone.net
DNS records live
- NS
-
- dns1.p02.nsone.net
- dns2.p02.nsone.net
- dns3.p02.nsone.net
- dns4.p02.nsone.net
- MX
-
- 1 aspmx.l.google.com
- 10 alt3.aspmx.l.google.com
- 10 alt4.aspmx.l.google.com
- 5 alt1.aspmx.l.google.com
- 5 alt2.aspmx.l.google.com
- TXT
-
keybase-site-verification=X_35OAL2o_Kov_NlJT8FQmPe1zOpoKKnj2jL8qTL7To
- Verified for
-
Email authentication weak
- SPF
- not published
- DMARC
- not published
- DKIM
- no key found at common selectors
Certificate (current)
YE1
Expires in 86 days
HTTP security headers
- present
-
- strict-transport-security
- x-frame-options
- x-content-type-options
- referrer-policy
- findings
-
- missing Content Security Policy
- missing Permissions Policy
Header values
- referrer-policy
origin-when-cross-origin- x-frame-options
DENY- x-content-type-options
nosniff- strict-transport-security
max-age=31536000