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12321.cn

https://12321.cn· First analyzed 28 Apr 2026· Updated 28 Apr 2026
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12321.cn
Desktop screenshot of 12321.cn
Mobile screenshot of 12321.cn
Mobile

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Hosting Provider

IP Address

202.106.156.101

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Jinrongjie, China

ASN

AS4808

Nameservers

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

Performance

82

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

1

SEO Analysis

D42/100
11
12
2
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
1
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

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.

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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.
D
54/100
6
Passed
7
Critical
0
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...

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
B
133 mg
CO₂e / view
1.0 MB
Page Weight
70%
Cleaner Than
New Visitor
152 mg
vs
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...
F

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

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

20

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.
D
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...

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
h2
20px
h3
16px
p
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.

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

1

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

9 Resources

8
Scripts
1
Styles
0
Async
0
Defer

Top Script Sources

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

Website Identity

12321.cn

Location detected: 🇨🇳 Chinavia tld

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Last analyzed: 28 Apr 2026 at 20:37

Historical Analysis & Change Tracking