21.com

https://21.com· First analyzed 20 May 2026· Updated 20 May 2026

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21.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.18.20.225

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

clint.ns.cloudflare.com.serenity.ns.cloudflare.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

738 ms10%

Speed Index

959 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

756 KB

76 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Platform

AWS CloudFront

CDN

Cloudflare

Technology Stack

5 Technologies Detected

Analytics

CSS Frameworks

Tag Managers

CDN

SEO Analysis

D56/100

Meta Tags13/15

Content7/12

Headings3/8

Technical13/25

E-E-A-T0/7

Images4/7

Links4/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

21.com21.com

21.com - Online Casino & Sports Betting - Play Great

21.com - Prepare to Play Great. Your premium online gaming destination coming soon.

Title Length52 chars

Recommended: 50-60 chars (~315px / 580px)

Description Length83 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

8 issues found

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Crawlability

Sitemap

robots.txt

21 rules

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

F22/100

Bot Access

15/25

Machine Read.

3/25

Schema Data

0/25

Citation

4/25

AI Bot Access

6/14 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

Text ratio:6%

Words:267

Token eff.:Too Short

Sections/1K:3.7

Structured Data

No Schema

Citation Readiness

Opening Summary10w

Descriptive Headingsavg 3w

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.

65/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

7/20

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

Forms & Inputs

10/15

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

4/15

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.

57/100

76 mg

CO₂e / view

755.6 KB

Page Weight

80%

Cleaner Than

New Visitor

87 mg

Returning (cached)

44 mg

Annual (10K/mo)

9.2 kg

Emission Segments

Data Center

4 mg

Network

22 mg

Device

50 mg

Resource Breakdown

JavaScript

3.2 KB

Images

552.0 KB

CSS

197.3 KB

HTML

3.1 KB

Green Hosting Verified

Cloudflare

GWF Verified

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

66%Fair

Interactive

HTTPS

WAF

81d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

12.05.2026

Valid Until

10.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (3)

21.comredirect.21.com*.redirect.21.com

SHA-256 Fingerprint

29:AF:88:24:77:8D:5B:5B:28:7C:B5:7A:BD:62:DA:F2:6E:88:6A:57...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

age

76845

cf-cache-status

DYNAMIC

cf-ray🇫🇷 Paris

9fed72db6cc0d096-CDG

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Wed, 20 May 2026 18:36:44 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

smtp.google.com

Domain Information

21.com

Domain Age

30y 6m

Created

01.11.1995

Expires

31.10.2035

Last Updated

18.02.2026

Registrar

SafeNames Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

58/100

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

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Zalando Sans

WCAG Partial

57/100

Readability

/30

18/30

14px · LH --

Hierarchy

/20

9/20

WCAG

/25

15/25

1:1 min contrast

Performance

/25

15/25

2 fonts · 3 req

Heading Font

Zalando Sans

Sans

Body Font

Zalando Sans

Sans14px

Contrast Ratio

1:1

17 issues

Reading Comfort

~47 CPL

Optimal (45–75)

17px

14px

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

✅ Optimal line length: ~47 chars/line (ideal 45–75 CPL).

⚠️ Partial contrast: 17 elements below WCAG AA threshold (min 1.0:1).

⚠️ Fluid type without rem: clamp() detected but missing rem units. May fail WCAG 1.4.4 zoom test.

✅ Lean font stack: 2 font families keeps load times fast.

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

Buy on MyFontsFluid TypeFlesch 63

Color Palette

7 unique colors

7.72:1 AAA Dark

#000000

Background· 85.6%

#989f94

Other· 1.3%

#d2edb0

Primary· 1.3%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(2)a9fb4f83-a58a-40b7-92ce-cdd1c0774a3b.snippet.anjcdn.org(1)libs.smartico.ai(1).(1)

Website Identity

21.com

30 years old

Location detected: 🇨🇦 Canadavia ip

SafeNames Ltd.📧 Google Workspaceen

Sponsored

Last analyzed: 20 May 2026 at 18:36

Historical Analysis & Change Tracking