yuandong-tian.com

.com crawl

First seen 2026-04-18 · Last seen 2026-05-16 · ok HTTP/1.1 200 5220 ms crawled 2026-05-12

US · 140.82.48.81 · AS20473 The Constant Company, LLC

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Yuandong Tian's webpage

Technology

Server
Apache
Analytics
  • Statcounter
Social widgets
  • Twitter Widget

Third-party hosts loaded (3)

  • ajax.googleapis.com×1
  • c26.statcounter.com×1
  • platform.twitter.com×1

Social

Registration

Registrar
eNom, LLC
Created
2013-10-26
Expires
2026-10-26 157 days left
Updated
2025-10-16
Name servers
  • ns1.vultr.com
  • ns2.vultr.com

DNS records live

NS
  • ns1.vultr.com
  • ns2.vultr.com
MX
  • 10 yuandong-tian.com

Email authentication weak

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

Certificate (current)

E7
from 2026-04-10 to 2026-07-09
Expires in 49 days

HTTP security headers

Header hygiene 30/100 Checked live page: https://yuandong-tian.com/

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

Links to (34)

Linked from (4)