indexo.dev

yanwudan.com

.com crawl

First seen 2026-04-12 · Last seen 2026-05-19 · ok HTTP/1.1 200 1176 ms crawled 2026-05-14

US · 104.21.10.43 · AS13335 Cloudflare, Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Language
cn

Technology

CDN
Cloudflare

Registration

Registrar
Gname.com Pte. Ltd.
Created
2007-07-28
Expires
2026-07-28 67 days left
Updated
2024-07-06
Name servers
  • emily.ns.cloudflare.com
  • owen.ns.cloudflare.com

DNS records live

NS
  • emily.ns.cloudflare.com
  • owen.ns.cloudflare.com
MX
  • 1 route2.mx.cloudflare.net
  • 16 route1.mx.cloudflare.net
  • 9 route3.mx.cloudflare.net

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 2026-04-16 to 2026-07-15
Expires in 55 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://yanwudan.com/

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

Linked from (1)