indexo.dev

52class.com

.com crawl

First seen 2026-04-16 · Last seen 2026-05-11 · ok HTTP/1.1 200 6143 ms crawled 2026-05-11

CN · 62.234.60.236 · AS45090 Shenzhen Tencent Computer Systems Company Limited

Reputation 100/100

sector education type homepage

HTML metadata

Title
52class | 网络教育资源导航
Description
52class.com搜集整理了网络上优质的教育教学资源，为您推荐免费好用的教学软件和APP，帮助广大教师解决找不到好用的辅助教学软件和不会使用的问题。
Language
zh-Hans

Open Graph

url
https://www.52class.com
title
52class | 网络教育资源导航
site name
52class
description
52class.com搜集整理了网络上优质的教育教学资源，为您推荐免费好用的教学软件和APP，帮助广大教师解决找不到好用的辅助教学软件和不会使用的问题。

Technology

Server
nginx
CMS
WordPress

Third-party hosts loaded (2)

  • cdn.iocdn.cc×5
  • at.alicdn.com×1

Contact

Phone

Registration

Registrar
DNSPod, Inc.
Created
2006-08-13
Expires
2027-08-13 451 days left
Updated
2025-08-13
Name servers
  • alphard.dnspod.net
  • bronze.dnspod.net

DNS records live

NS
  • alphard.dnspod.net
  • bronze.dnspod.net

Email authentication no MX

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

Certificate (current)

R12
from 2026-05-03 to 2026-08-01
Expires in 74 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://www.52class.com/

present
  • strict-transport-security
findings
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=31536000

Links to (26)

Linked from (1)