book.app
HTML metadata
Social
DNS records live
- NS
-
- ns-1383.awsdns-44.org
- ns-165.awsdns-20.com
- ns-1654.awsdns-14.co.uk
- ns-661.awsdns-18.net
- MX
-
- 10 inbound.postmarkapp.com
- TXT
-
v=spf1 a mx include:spf.mtasv.net ~all
- Verified for
-
- Meta
Certificate (current)
ZeroSSL RSA Domain Secure Site CA
Expires in 35 days
HTTP security headers
- present
-
- strict-transport-security
- findings
-
- missing Content Security Policy
- missing frame protection
- missing content type protection
- missing Referrer Policy
- missing Permissions Policy
Header values
- strict-transport-security
max-age=31536000; includeSubDomains
Links to (2)
- github.com×1
- ovatu.com×1