4duedu.com

.com crawl

First seen 2026-05-22 · Last seen 2026-05-30 · ok HTTP/1.1 200 5515 ms crawled 2026-05-28

US · 104.21.67.54 · AS13335 Cloudflare, Inc.

Reputation 95/100 weak security headers

sector education type homepage

HTML metadata

Title: 四度精准教学-富飞乐科技（武汉）有限公司
Description: 富飞乐科技（武汉）有限公司欢迎您
Language: en

Technology

CDN: Cloudflare

Third-party hosts loaded (1)

cbu01.alicdn.com×9

Registration

Registrar

Gname.com Pte. Ltd.

Created

2018-01-17

Expires

2027-01-17 230 days left

Updated

2026-05-10

Name servers

carla.ns.cloudflare.com
matias.ns.cloudflare.com

DNS records live

NS

carla.ns.cloudflare.com
matias.ns.cloudflare.com

Email authentication no MX

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

Certificate (current)

E7

from 2026-05-10 to 2026-08-08

Expires in 68 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 35/100 Checked over plain HTTP: http://www.4duedu.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 (30)

Linked from (11)