12321.cn

https://12321.cn· First analyzed 28 Apr 2026· Updated 28 Apr 2026

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12321.cn

Mobile

Sponsored

Hosting Provider

China Unicom Beijing Province Network

IP Address

202.106.156.101

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Jinrongjie, China

ASN

AS4808

Nameservers

dns3.hichina.com.dns4.hichina.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.0 s10%

Speed Index

2.6 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1 MB

38 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

China Unicom Beijing Province Network

Technology Stack

1 Technologies Detected

Libraries

jQueryv1.11.0

SEO Analysis

D42/100

Meta Tags5/15

Content8/12

Headings3/8

Technical11/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

12321.cn12321.cn

12321网络不良与垃圾信息举报受理中心

12321,12321网络不良与垃圾信息举报受理中心提供网络垃圾与不良信息的举报和受理反馈。

Title Length20 chars

Recommended: 50-60 chars (~119px / 580px)

Description Length46 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (13/14) — critical for accessibility and SEO

14 issues found

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Crawlability

Sitemap

robots.txt

6 rules

Local SEO

Local Search Readiness

2/100

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

F9/100

Bot Access

3/25

Machine Read.

2/25

Schema Data

0/25

Citation

4/25

AI Bot Access

0/14 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.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

def. lists

Text ratio:5%

Words:109

Token eff.:Too Short

Sections/1K:27.5

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 1w

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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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.

54/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

Semantic Structure

4/20

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.

4 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.

42/100

133 mg

CO₂e / view

1.0 MB

Page Weight

70%

Cleaner Than

New Visitor

152 mg

Returning (cached)

76 mg

Annual (10K/mo)

15.9 kg

Emission Segments

Data Center

30 mg

Network

32 mg

Device

71 mg

Resource Breakdown

JavaScript

166.6 KB

Images

506.9 KB

CSS

393.9 KB

HTML

6.2 KB

Green Hosting Not Verified

China Unicom Beijing Province Network

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

52d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Beijing Xinchacha Credit Management Co., Ltd.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

20.06.2025

Valid Until

20.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.12321.cn12321.cn

SHA-256 Fingerprint

C3:3D:4C:D6:39:71:BC:85:C9:B8:3F:6A:61:A8:F5:76:B5:A5:FC:57...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟣 Private(private)

connection

keep-alive

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=utf-8

date

Tue, 28 Apr 2026 20:37:27 GMT

expires

Thu, 19 Nov 1981 08:52:00 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mxcom.263xmail.com

mxwcom.263xmail.com

Domain Information

12321.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.

52/100

Mobile Friendly1 breakpoint

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

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

微软雅黑

WCAG Partial

53/100

Readability

/30

17/30

16px · LH 2.00

Hierarchy

/20

6/20

WCAG

/25

16/25

2.41:1 min contrast

Performance

/25

14/25

1 font

Heading Font

微软雅黑

Sans

Body Font

微软雅黑

Sans16px

Contrast Ratio

2.41:1

4 issues

Reading Comfort

~77 CPL

Wide lines

16px

20px

16px

Major Third

Scale

✅ Excellent readability: 16px body text is ideal for all devices.

⚠️ Wide line spacing (2.00). 1.4–1.6 is optimal for body text.

⚠️ Wide lines: ~76 chars/line. Use max-width: 65ch for comfortable reading.

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 2.4:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

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

Buy on MyFonts

Color Palette

5 unique colors

Light

#eeeeee

Background· 60.19999999999998%

#bae7cd

Primary· 16.3%

#97b89b

Secondary· 6%

#d7ede1

Secondary· 4.2%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

9 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(7)hm.baidu.com(1)

Website Identity

12321.cn

abuse@12321.cn

Location detected: 🇨🇳 Chinavia tld

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Last analyzed: 28 Apr 2026 at 20:37

Historical Analysis & Change Tracking