chen-geng.com

.com crawl

First seen 2026-04-18 · Last seen 2026-05-13 · ok HTTP/1.1 200 4441 ms crawled 2026-05-12

US · 172.67.137.146 · AS13335 Cloudflare, Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title: Chen Geng | Stanford CS
Language: en

Technology

CDN: Cloudflare
CMS: Gatsby

Analytics

Cloudflare Insights
Google Tag Manager
Statcounter

Third-party hosts loaded (7)

c.statcounter.com×1
code.jquery.com×1
in.getclicky.com×1
static.cloudflareinsights.com×1
static.getclicky.com×1
www.googletagmanager.com×1
www.statcounter.com×1

Social

Registration

Registrar

Cloudflare, Inc.

Created

2022-11-21

Expires

2026-11-21 186 days left

Updated

2025-10-22

Name servers

evan.ns.cloudflare.com
lila.ns.cloudflare.com

DNS records live

NS

evan.ns.cloudflare.com
lila.ns.cloudflare.com

MX

12 route2.mx.cloudflare.net
33 route3.mx.cloudflare.net
66 route1.mx.cloudflare.net

TXT

google-site-verification=8Ep3bHS_6nOMR02KelK68kaWGf3nkaN_rOKNQabpwVw

Email authentication weak

SPF: v=spf1 include:_spf.mx.cloudflare.net ~all
softfail (~all)
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

WE1

from 2026-04-20 to 2026-07-19

Expires in 62 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://chen-geng.com/

findings

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