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0513.org

https://0513.org· First analyzed 30 May 2026· Updated 30 May 2026
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0513.org
Desktop screenshot of 0513.org
Mobile screenshot of 0513.org
Mobile

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Hosting Provider

China Mobile Communications Corporation

IP Address

112.19.1.65

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Jinrongjie, China

ASN

AS139080

Organization

China Mobile Communications Corporation

Server

Tengine

Nameservers

netball.dnspod.net.brazil.dnspod.net.

Performance

95

Core Web Vitals

Weight

First Contentful Paint
1.1 s10%
Speed Index
1.5 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
344 KB
19 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
China Mobile Communications Corporation

Technology Stack

3 Technologies Detected

Libraries

1
jQueryv1.8.1

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Tengine

SEO Analysis

F38/100
11
8
3
Meta Tags5/15
Content3/12
Headings6/8
Technical7/21
E-E-A-T0/7
Images1/7
Links4/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
0
0513.org0513.org

濠滨网-南通第一门户-南通吃喝玩乐购尽在南通濠滨网

濠滨网是南通第一门户网站，旗下拥有濠滨论坛、南通热线信息网、南通房产网、南通团购网、南通人才网等众多品牌网站。

Title Length25 chars

Recommended: 50-60 chars (~155px / 580px)

Description Length55 chars

Recommended: 120-160 chars

Issues (3)

  • • Very thin content (25 words). Search engines need substantial content for ranking.
  • • Most images missing alt text (8/8) — critical for accessibility and SEO
  • • Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

11 issues found

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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

F31/100
Bot Access
20/25
Machine Read.
5/25
Schema Data
0/25
Citation
6/25

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.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
navheader/footer
Text ratio:1%
Words:24
Token eff.:Too Short
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary28w
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 (9)
AI readiness recommendation preview...
Upgrade to view recommendations

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.
C
65/100
10
Passed
3
Critical
0
Warnings
Images & Alt Text
5/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
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.
2 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
58/100
A
43 mg
CO₂e / view
343.6 KB
Page Weight
90%
Cleaner Than
New Visitor
49 mg
vs
Returning (cached)
24 mg
Annual (10K/mo)
5.1 kg
Emission Segments
Data Center
10 mg
Network
10 mg
Device
23 mg
Resource Breakdown
JavaScript
105.8 KB
Images
53.0 KB
CSS
182.0 KB
HTML
2.8 KB
Green Hosting Not Verified
China Mobile Communications Corporation
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

76%Good
Static / Informational

HTTPS

No WAF

269d

Certificate Details

Type

Domain Validated (DV)

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

24.02.2026

Valid Until

24.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.0513.org0513.org

SHA-256 Fingerprint

51:E6:E9:43:50:9F:FF:BD:2A:10:33:4E:3D:87:5D:8C:F4:97:19:A3...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

connection
keep-alive
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=UTF-8
date
Sat, 30 May 2026 05:55:40 GMT
eagleid
b6306c0d17801205407557484e
server
Tengine
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

20

SPF
DKIM
DMARC

MX Records (2)

mxbiz1.qq.com
mxbiz2.qq.com

Domain Information

0513.org

Domain Age
24y 2m

Created

01.04.2002

Expires

01.04.2034

Last Updated

15.05.2024

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

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.
F
29/100
Not 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.
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

tahoma

WCAG Partial
49/100
Readability
/30
11/30

12px · LH 1.50

Hierarchy
/20
10/20

1x ratio · ✓ H1→H6

WCAG
/25
14/25

1:1 min contrast

Performance
/25
14/25

1 font

Heading Font

tahoma

Sans12px

Body Font

tahoma

Sans12px

Contrast Ratio

1:1

7 issues

Reading Comfort

~152 CPL

Too wide
12px
h1
12px
p

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

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

❌ Very long lines: ~152 chars/line causes eye strain. Add max-width constraint.

⚠️ Partial contrast: 7 elements below WCAG AA threshold (min 1.0:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

Buy on MyFonts

Color Palette

7 unique colors
Light
#ffffff
Background· 57%
#ebf4ff
Primary· 14%
#c8e1fc
Accent· 11.8%
#5a7592
Secondary· 5.7%
#7d9aad
Secondary· 4.7%
#d4d3c1
Secondary· 3.6%
#92c2c3
Secondary· 3.4%

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Scripts & Styles

7 Resources

5
Scripts
2
Styles
0
Async
0
Defer

Top Script Sources

js(2)qr.0513.org(2)hm.baidu.com(1)

Website Identity

0513.org

24 years old
Location detected: 🇨🇳 Chinavia ip
Alibaba Cloud Computing (Beijing) Co., Ltd.zh-CN

Sponsored

Last analyzed: 30 May 2026 at 05:56

Historical Analysis & Change Tracking

0513.org Technology Stack - Built With jQuery, Tailwind CSS, Tengine | StackOptic | StackOptic