zning.co

HTML metadata

Technology

CDN

Fastly

Server

GitHub.com

Analytics

• Google Tag Manager

Fonts

• Google Fonts

Third-party hosts loaded (2)

• fonts.googleapis.com×1
• www.googletagmanager.com×1

Social

• twitter
• linkedin
• youtube

Contact

Address

st updated: Feb 2026

DNS records live

NS

• ns1.bluehost.com
• ns2.bluehost.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://zning.co/

findings

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

Links to (8)

• yuan-tian.com×2
• arxiv.org×2
• google.com×2
• linkedin.com×2
• twitter.com×2
• acm.org×2
• youtube.com×2
• youtu.be×1

Linked from (1)

• yuhangz.com×2