StackOptic
Back to Search
17500.cn favicon

17500.cn

https://17500.cn· First analyzed 17 May 2026· Updated 17 May 2026
Export
17500.cn
Desktop screenshot of 17500.cn
Mobile screenshot of 17500.cn
Mobile

Sponsored

Hosting Provider

China Unicom Cloud Data Company Limited

IP Address

123.58.254.142

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Beijing, China

ASN

AS133119

Organization

China Unicom Cloud Data Company Limited

Nameservers

dns10.hichina.com.dns9.hichina.com.

Performance

78

Core Web Vitals

Weight

First Contentful Paint
2.5 s10%
Speed Index
3.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
35 KB
29 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
China Unicom Cloud Data Company Limited

Technology Stack

4 Technologies Detected

Libraries

1
jQuery

UI Components

1
Swiper

CSS Frameworks

1
Tailwind CSS

Customer Support

1
Zendesk

SEO Analysis

B71/100
19
6
0
Meta Tags15/15
Content11/12
Headings8/8
Technical15/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
1
17500.cn17500.cn

乐彩网 - www.17500.cn - 原创+专业+人气旺，踏实服务我国彩票公益事业，福彩体彩门户网站

「快乐玩彩，尽在乐彩」乐彩网作为彩票门户网站，多年来一直致力于提供专业的福利彩票、体育彩票、竞彩等彩票资讯|开奖号|彩票工具|走势图|图表|分析数据服务，福彩3D等全彩种高命中率的预测推荐，排列三等彩票专家名人在乐彩论坛提供在线讨论交流服务。

Title Length52 chars

Recommended: 50-60 chars (~324px / 580px)

Description Length121 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    55 URLs

    55 sub-sitemaps

    robots.txt

    50 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    6/100
    Poor
    2 13 2

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

    Sponsored

    AI & LLM Readiness

    D40/100
    Bot Access
    20/25
    Machine Read.
    11/25
    Schema Data
    0/25
    Citation
    9/25

    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
    def. lists
    Text ratio:5%
    Words:2,066
    Token eff.:Optimal
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary
    Descriptive Headingsavg 1w
    Canonical URL
    Open Graph3/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (11)
    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.
    B
    74/100
    11
    Passed
    5
    Critical
    0
    Warnings
    Images & Alt Text
    15/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    11/20
    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
    9/15
    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.
    51/100
    A+
    4 mg
    CO₂e / view
    34.8 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    5 mg
    vs
    Returning (cached)
    3 mg
    Annual (10K/mo)
    516 g
    Emission Segments
    Data Center
    1 mg
    Network
    1 mg
    Device
    2 mg
    Resource Breakdown
    HTML
    33.3 KB
    Other
    1.5 KB
    Green Hosting Not Verified
    China Unicom Cloud Data Company Limited
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    0%Critical
    Critical / Transactional

    HTTPS

    No WAF

    16d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    05.03.2026

    Valid Until

    03.06.2026

    Subject Alternative Names (20)

    *.17500.cn*.3dtaihu.cn*.6.17500.cn*.8.17500.cn*.90915.cn*.917500.cn*.bbs.17500.cn*.cnlot.net+12 more

    SHA-256 Fingerprint

    BD:1E:1C:D0:B1:24:FC:9D:F8:B6:AC:20:66:55:12:1B:A6:36:AD:01...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-credentials
    true
    access-control-allow-headers
    DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If...
    access-control-allow-methods
    GET, POST, OPTIONS
    access-control-allow-origin
    *
    cache-control
    🔴 No Cache(no-cache, private)
    content-encoding
    📦 Gzip(gzip)
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    75

    SPF
    DKIM
    DMARC

    DMARC Policy

    Reject (Strictest)

    MX Records (3)

    mailx.17500.cn
    mxbackup1.junkemailfilter.com
    mxbackup2.junkemailfilter.com

    Domain Information

    17500.cn

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Privacy policy page linked

    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
    57/100
    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=1.0
    3 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Microsoft YaHei UI

    WCAG Partial
    56/100
    Readability
    /30
    15/30

    14px · LH 1.43

    Hierarchy
    /20
    11/20
    WCAG
    /25
    16/25

    2.52:1 min contrast

    Performance
    /25
    14/25

    1 font

    Heading Font

    Microsoft YaHei UI

    Sans0

    Body Font

    Microsoft YaHei UI

    Sans14px

    Contrast Ratio

    2.52:1

    8 issues

    Reading Comfort

    ~115 CPL

    Too wide
    16px
    h1
    20px
    h2
    14px
    h3
    14px
    p

    ⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

    ✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

    ❌ Very long lines: ~115 chars/line causes eye strain. Add max-width constraint.

    ⚠️ Partial contrast: 8 elements below WCAG AA threshold (min 2.5:1).

    ❌ 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 MyFontsFlesch 58

    Color Palette

    6 unique colors
    Light
    #ffffff
    Background· 67.80000000000003%
    #ebf2fa
    Primary· 12.3%
    #f0460f
    Accent· 6.9%
    #8b86aa
    Secondary· 5.4%
    #b4c2d2
    Secondary· 4%
    #eacbc8
    Secondary· 3.5%

    Business & Marketing Stack

    1 Tools Detected

    Growing

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    1

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    9 Resources

    6
    Scripts
    3
    Styles
    0
    Async
    0
    Defer

    Top Script Sources

    assets.cnlot.net(5)hm.baidu.com(1)

    Website Identity

    17500.cn

    Location detected: 🇨🇳 Chinavia tld
    zh-CN

    Sponsored

    Last analyzed: 17 May 2026 at 19:36

    Historical Analysis & Change Tracking