yulanguo.me

.me crawl

First seen 2026-04-26 · Last seen 2026-05-16 · ok HTTP/1.1 200 788 ms crawled 2026-05-19

US · 104.21.14.125 · AS13335 Cloudflare, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: Yulan Guo's Homepage

Technology

CDN: Cloudflare

DNS records live

NS

kira.ns.cloudflare.com
quinton.ns.cloudflare.com

Email authentication no MX

SPF: not published
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

WE1

from 2026-03-30 to 2026-06-28

Expires in 39 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://yulanguo.me/

findings

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

Links to (6)

Linked from (1)

shuaifengzhi.com×2

See all sites whose homepage links to yulanguo.me →