51anidea.com

.com crawl

First seen 2026-04-17 · Last seen 2026-05-17 · ok HTTP/1.1 200 714 ms crawled 2026-05-11

US · 104.21.61.4 · AS13335 Cloudflare, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: linux教程网
Description: Windows、BIOS、电脑硬件、家庭网络, Linux系统, 工具软件, Keepalived、HAProxy, NFS
Language: zh
Canonical: https://51anidea.com/

Open Graph

url: https://51anidea.com/
title: linux教程网
site name: linux教程网
description: Windows、BIOS、电脑硬件、家庭网络, Linux系统, 工具软件, Keepalived、HAProxy, NFS

Technology

CDN: Cloudflare

Third-party hosts loaded (1)

lf3-cdn-tos.bytescm.com×1

Registration

Registrar

Gname 405 Inc

Created

2026-01-31

Expires

2027-01-31 256 days left

Updated

2026-04-11

Name servers

elisabeth.ns.cloudflare.com
ishaan.ns.cloudflare.com

DNS records live

NS

elisabeth.ns.cloudflare.com
ishaan.ns.cloudflare.com

Email authentication no MX

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

Certificate (current)

E7

from 2026-04-11 to 2026-07-10

Expires in 51 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://51anidea.com/

findings

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

Links to (31)

Linked from (31)