knet.cn

https://knet.cn· First analyzed 26 Apr 2026· Updated 26 Apr 2026

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knet.cn

Mobile

Sponsored

Hosting Provider

Internet Domain Name System Beijing Engineering Resrarch Center Ltd.

IP Address

202.173.11.186

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Haidian, China

ASN

AS38345

Organization

Internet Domain Name System Beijing Engineering Resrarch Center Ltd.

Server

OpenResty

Nameservers

cns1.zdnscloud.net.vns1.zdnscloud.biz.ins1.zdnscloud.com.dns1.zdnscloud.info.

Performance

Core Web Vitals

Weight

First Contentful Paint

4.2 s10%

Speed Index

5.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.5 MB

30 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Internet Domain Name System Beijing Engineering Resrarch Center Ltd.

Technology Stack

1 Technologies Detected

Web Servers

OpenResty

SEO Analysis

F38/100

Meta Tags10/15

Content3/12

Headings0/8

Technical9/21

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

knet.cnknet.cn

北龙中网_北龙中网.网址_中文域名_北龙中网（北京）科技有限责任公司官网

北龙中网.网址是北龙中网（北京）科技有限责任公司官网，北龙中网由中国科学院计算机网络信息中心的中科北龙出资组建，主要服务领域中文域名、网址注册、中文域名申请、.网址域名注册等

Title Length36 chars

Recommended: 50-60 chars (~221px / 580px)

Description Length87 chars

Recommended: 120-160 chars

Issues (2)

• Very thin content (1 words). Search engines need substantial content for ranking.
• Missing H1 tag — every page should have exactly one H1

13 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

Local SEO

Local Search Readiness

3/100

Poor

1 14 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F26/100

Bot Access

20/25

Machine Read.

6/25

Schema Data

0/25

Citation

0/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:0%

Words:72

Token eff.:Too Short

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

AI readiness recommendation preview...

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Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

63/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

3/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

1/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

3 recommendations

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

23/100

317 mg

CO₂e / view

2.5 MB

Page Weight

30%

Cleaner Than

New Visitor

363 mg

Returning (cached)

181 mg

Annual (10K/mo)

38.1 kg

Emission Segments

Data Center

71 mg

Network

76 mg

Device

170 mg

Resource Breakdown

JavaScript

420.1 KB

Images

1.5 MB

CSS

40.7 KB

HTML

1.2 KB

Other

582.5 KB

Green Hosting Not Verified

Internet Domain Name System Beijing Engineering Resrarch Center Ltd.

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

127d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

02.03.2026

Valid Until

31.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

xn--fiqq3jr41co80a.xn--ses554gwww.xn--fiqq3jr41co80a.xn--ses554g

SHA-256 Fingerprint

10:C7:85:03:50:5A:4B:3D:5D:C8:6D:AE:5A:DA:BD:95:3F:1A:FA:67...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Sun, 26 Apr 2026 23:29:31 GMT

etag

W/"69e03f83-6fe"

last-modified

Thu, 16 Apr 2026 01:46:43 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mxbiz1.qq.com

mxbiz2.qq.com

Domain Information

knet.cn

DNSSEC

Not Enabled

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

65/100

Mobile Friendly

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width, initial-scale=1.0

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

PingFang SC

WCAG Partial

51/100

Readability

/30

12/30

12px · LH --

Hierarchy

/20

9/20

WCAG

/25

17/25

1.02:1 min contrast

Performance

/25

13/25

1 font · 1 req

Heading Font

PingFang SC

Body Font

PingFang SC

Sans12px

Contrast Ratio

1.02:1

27 issues

Reading Comfort

~94 CPL

Wide lines

12px

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Wide lines: ~94 chars/line. Use max-width: 65ch for comfortable reading.

⚠️ Partial contrast: 27 elements below WCAG AA threshold (min 1.0:1).

✅ Lean font stack: 1 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFonts

Color Palette

8 unique colors

Light

#ffffff

Background· 16.1%

#2b2c5c

Primary· 42.2%

#2ba2da

Accent· 17.3%

#e6f0f6

Secondary· 9.4%

#50acd9

Accent· 2.5%

#687288

Secondary· 2.3%

#512b4d

Secondary· 2.2%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)hm.baidu.com(1)ipv6.knet.cn(1)xn--nqq01hr76bkgi.xn--26qu4xpon.xn--ses554g(1)

Website Identity

knet.cn

Location detected: 🇨🇳 Chinavia tld

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Last analyzed: 26 Apr 2026 at 23:30

Historical Analysis & Change Tracking