knowsafe.com

.com crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 4162 ms crawled 2026-05-18

CN · 43.142.145.14 · AS45090 Shenzhen Tencent Computer Systems Company Limited

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title: 知安（KNOWSAFE） - 您产品的安全医院！【知安天下】
Description: 知安（KnowSafe）是一个帮助站长、厂商、企事业单位、政府机关发现并解决安全风险问题的代码医院，创建于2015年，由国内最大互联网安全团队网络尖刀团队支撑。
Language: en

Technology

Server: Apache
CMS: Gatsby

Third-party hosts loaded (1)

sdk.51.la×1

Contact

Email

sales@knowsafe.com

Phone

51019002000540

Registration

Registrar

DNSPod, Inc.

Created

2014-03-25

Expires

2027-03-25 309 days left

Updated

2026-03-10

Name servers

f1g1ns1.dnspod.net
f1g1ns2.dnspod.net

DNS records live

NS

f1g1ns1.dnspod.net
f1g1ns2.dnspod.net

MX

10 mxdomain.qq.com

Email authentication weak

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

Certificate (current)

iTrust DV TLS CA

from 2025-08-14 to 2026-08-14

Expires in 87 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.knowsafe.com/

findings

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

Links to (1)

qq.com×4