usermag.co
HTML metadata
Technology
- CDN
- Cloudflare
- CMS
- Gatsby
- Analytics
-
- Cloudflare Insights
Third-party hosts loaded (3)
- substackcdn.com×261
- js.sentry-cdn.com×1
- static.cloudflareinsights.com×1
Social
DNS records live
- NS
-
- ns-1430.awsdns-50.org
- ns-1914.awsdns-47.co.uk
- ns-211.awsdns-26.com
- ns-826.awsdns-39.net
- MX
-
- 1 smtp.google.com
- 15 njpppzkl4vf4dpc3igfikbyi6dgvsfp2uwiv6tocmztrutb3znqq.mx-verification.google.com
Email authentication partial
- SPF
- not published
- DMARC
- not published
- DKIM
- no key found at common selectors
Certificate (current)
E7
Expires in 34 days
HTTP security headers
- present
-
- strict-transport-security
- content-security-policy
- findings
-
- CSP uses wildcard sources
- missing frame protection
- missing content type protection
- missing Referrer Policy
- missing Permissions Policy
Header values
- content-security-policy
frame-ancestors 'self' https://*.substack.com https://substack.com- strict-transport-security
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