indexo.dev

douxueketang.com

.com crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 969 ms crawled 2026-05-19

CN · 58.217.178.113 · AS134756 CHINANET Nanjing Jishan IDC network

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

Classifying

HTML metadata

Title
之了专升本题库
Language
en

Technology

Server
nginx

Registration

Registrar
Alibaba Cloud Computing (Beijing) Co., Ltd.
Created
2019-07-26
Expires
2027-07-26 431 days left
Updated
2025-06-25
Name servers
  • dns27.hichina.com
  • dns28.hichina.com

DNS records live

NS
  • dns27.hichina.com
  • dns28.hichina.com
MX
  • 10 mx2.qiye.aliyun.com
  • 15 mx3.qiye.aliyun.com
  • 5 mx1.qiye.aliyun.com
CNAME
  • douxueketang.com.eo.dnse1.com

Email authentication weak

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

Certificate (current) wrong cert

DigiCert Basic OV G2 TLS CN RSA4096 SHA256 2022 CA1
from 2025-09-30 to 2026-11-01
Expires in 164 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 35/100 Checked over plain HTTP: http://douxueketang.com/

findings
  • checked over plain HTTP
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (2)

Linked from (1)