indexo.dev

zhishutang.com

.com crawl

First seen 2026-04-13 · Last seen 2026-05-06 · ok HTTP/1.1 200 1136 ms crawled 2026-05-06

KR · 43.133.241.44 · AS132203 Tencent Building, Kejizhongyi Avenue

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
知数堂 - 优质、靠谱的培训品牌
Description
知数堂培训专注互联网MySQL,MongoDB,Python,Linux,自动化,大数据使用相关培训

Technology

Server
nginx

Social

Contact

Phone

Registration

Registrar
DNSPod, Inc.
Created
2017-03-04
Expires
2027-03-04 289 days left
Updated
2026-02-17
Name servers
  • f1g1ns1.dnspod.net
  • f1g1ns2.dnspod.net

DNS records live

NS
  • f1g1ns1.dnspod.net
  • f1g1ns2.dnspod.net
MX
  • 10 mxbiz2.qq.com
  • 5 mxbiz1.qq.com
CNAME
  • imysql.com

Email authentication partial

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

Certificate (current)

TrustAsia DV TLS RSA CA 2025
from 2025-10-25 to 2026-01-23
Expired 116 days ago

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 35/100 Checked over plain HTTP: http://zhishutang.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 (22)

Linked from (1)