chenglaixinjiaoxue.com

HTML metadata

Technology

CDN

Cloudflare

CMS

Gatsby

Registration

Registrar

Gname 250 Inc

Created

2026-05-14

Expires

2027-05-14 328 days left

Updated

2026-06-15

Name servers

• terin.ns.cloudflare.com
• tessa.ns.cloudflare.com

DNS records live

NS

• terin.ns.cloudflare.com
• tessa.ns.cloudflare.com

Email authentication no MX

SPF

not published

DMARC

not published

DKIM

no key found at common selectors

Certificate (current)

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://chenglaixinjiaoxue.com/

findings

• missing HSTS
• missing Content Security Policy
• missing frame protection
• missing content type protection
• missing Referrer Policy
• missing Permissions Policy

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Linked from (2)

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