indexo.dev

yimingzhao.net

.net crawl

First seen 2026-04-20 · Last seen 2026-04-20 · ok HTTP/1.1 200 1498 ms crawled 2026-05-14

US · 192.30.252.153 · AS36459 GitHub, Inc.

Reputation 62/100 wrong cert weak security headers no dmarc policy

Classifying

HTML metadata

Title
Hi, Welcome! - Yiming Zhao
Language
en
Canonical
https://yimingzhaomath.github.io/
Feeds

Open Graph

url
https://yimingzhaomath.github.io/
title
Hi, Welcome!
locale
en-US
site name
Yiming Zhao
description
About me

Technology

CDN
Fastly
Server
GitHub.com

Third-party hosts loaded (2)

  • yimingzhaomath.github.io×21
  • cdnjs.cloudflare.com×1

Social

Registration

Registrar
Squarespace Domains II LLC
Created
2018-05-21
Expires
2028-05-21 731 days left
Updated
2026-04-15
Name servers
  • ns-cloud-a1.googledomains.com
  • ns-cloud-a2.googledomains.com
  • ns-cloud-a3.googledomains.com
  • ns-cloud-a4.googledomains.com

DNS records live

NS
  • ns-cloud-a1.googledomains.com
  • ns-cloud-a2.googledomains.com
  • ns-cloud-a3.googledomains.com
  • ns-cloud-a4.googledomains.com
MX
  • 10 mxa.mailgun.org
  • 10 mxb.mailgun.org

Email authentication weak

SPF
v=spf1 include:mailgun.org ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current) wrong cert

Sectigo Public Server Authentication CA DV R36
from 2026-04-14 to 2026-07-13
Expires in 53 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.yimingzhao.net/

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)