3fstudymate.com

.com crawl

First seen 2026-05-29 · Last seen 2026-05-31 · ok HTTP/1.1 200 702 ms crawled 2026-05-31

US · 172.67.133.64 · AS13335 Cloudflare, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: 三个朋友（北京）科技发展有限公司
Description: -
Language: en

Technology

CDN: Cloudflare
CMS: Gatsby

Registration

Registrar

NameSilo, LLC

Created

2026-05-18

Expires

2027-05-18 351 days left

Updated

2026-05-22

Name servers

maleah.ns.cloudflare.com
todd.ns.cloudflare.com

DNS records live

NS

maleah.ns.cloudflare.com
todd.ns.cloudflare.com

Email authentication no MX

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

Certificate (current)

E7

from 2026-05-22 to 2026-08-20

Expires in 80 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://3fstudymate.com/

findings

missing HSTS
missing Content Security Policy
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy

Links to (50)

Linked from (13)