indexo.dev

jd100.com

.com crawl

First seen 2026-04-15 · Last seen 2026-05-10 · ok HTTP/1.1 200 21254 ms crawled 2026-05-10

CN · 175.25.25.120 · AS4808 China Unicom Beijing Province Network

Reputation 100/100

Classifying

HTML metadata

Title
简单一百中学全科精品课（原简单学习网）
Description
简单一百中学全科精品课（原简单学习网）
Language
en

Technology

Server
Tengine
CMS
Gatsby

Registration

Registrar
Todaynic.com, Inc.
Created
2009-01-06
Expires
2034-01-06 2788 days left
Updated
2025-01-13
Name servers
  • vip3.alidns.com
  • vip4.alidns.com

DNS records live

NS
  • vip3.alidns.com
  • vip4.alidns.com
MX
  • 20 mailgw.jd100.com
  • 40 mailgw1.jd100.com

Email authentication strong

SPF
v=spf1 ip4:60.247.65.115 ip4:60.247.65.117 ip4:103.213.91.251 ip4:103.213.91.253 -all
strict (-all)
DMARC
v=DMARC1; p=reject; adkim=s; aspf=s; pct=100; rua=mailto:dmarc@jiandan100.cn
policy: reject (enforced)
DKIM
no key found at common selectors

Certificate (current)

GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1
from 2025-10-24 to 2026-11-25
Expires in 189 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 70/100 Checked live page: https://www.jd100.com

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
findings
  • short HSTS max-age
  • CSP uses wildcard sources
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
SAMEORIGIN
content-security-policy
frame-ancestors *.jianeryou.com *.jd100.com *.jiandan100.cn *.jd100.cn
strict-transport-security
max-age=604800

Linked from (2)