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computernetworkingnotes.com

https://computernetworkingnotes.com· First analyzed 24 May 2026· Updated 24 May 2026
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computernetworkingnotes.com
Desktop screenshot of computernetworkingnotes.com
Mobile screenshot of computernetworkingnotes.com
Mobile

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Hosting Provider

Cloudflare
cloudflare.com

IP Address

104.21.39.172

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

terry.ns.cloudflare.com.ingrid.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
487 ms10%
Speed Index
633 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
35 KB
6 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPress
cms
cnnCustom

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

2 Technologies Detected

CSS Frameworks

1
Tailwind CSS

CDN

1
Cloudflare

SEO Analysis

C60/100
19
6
1
Meta Tags13/15
Content9/12
Headings1/8
Technical14/21
E-E-A-T2/7
Images0/7
Links2/5
URL5/5
Social3/5
Freshness4/4
Mobile4/4
Indexability3/3
C
computernetworkingnotes.comcomputernetworkingnotes.com

Complete Computer networking notes guides tutorials

This website provides a comprehensive collection of computer networking tutorials, notes and study guides for anyone who is preparing for networking certific...

Description truncated.
Title Length51 chars

Recommended: 50-60 chars (~313px / 580px)

Description Length301 chars

Recommended: 120-160 chars

Issues (1)

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

7 issues found

Upgrade to view details

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.

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AI & LLM Readiness

D48/100
Bot Access
20/25
Machine Read.
9/25
Schema Data
7/25
Citation
12/25

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:12%
Words:411
Token eff.:Optimal
Sections/1K:9.7
Depth:2/5

Structured Data

1 JSON-LD
Person×1.3Organization×1.1WebSite

Citation Readiness

Opening Summary25w
Descriptive Headingsavg 2.2w
Canonical URL
Open Graph3/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
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.
B
76/100
10
Passed
4
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
13/20
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
4/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 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.
70/100
A+
4 mg
CO₂e / view
35.1 KB
Page Weight
95%
Cleaner Than
New Visitor
4 mg
vs
Returning (cached)
2 mg
Annual (10K/mo)
420 g
Emission Segments
Data Center
<0.001 g
Network
1 mg
Device
2 mg
Resource Breakdown
JavaScript
11.3 KB
Images
2.0 KB
CSS
16.9 KB
HTML
5.0 KB
Green Hosting Verified
Cloudflare
GWF Verified
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

76%Good
Static / Informational

HTTPS

WAF

54d

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+H3

Valid From

19.04.2026

Valid Until

18.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

computernetworkingnotes.com*.computernetworkingnotes.com

SHA-256 Fingerprint

45:B7:41:BE:8C:E7:B6:92:B5:A4:A4:8D:27:3E:30:A6:D6:8D:0C:A0...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

age
51967
alt-svc
h3=":443"; ma=86400
cache-control
🟡 60s(s-maxage=31536000, max-age=60)
cf-cache-status
HIT
cf-ray🇮🇹 Milan
a01037feeb7cc724-MXP
content-encoding
zstd
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

90

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (3)

mx30.mailspamprotection.com
mx10.mailspamprotection.com
mx20.mailspamprotection.com

Domain Information

computernetworkingnotes.com

Domain Age
16y 1m

Created

31.03.2010

Expires

31.03.2027

Last Updated

13.08.2025

Registrar

BigRock Solutions Ltd

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.
C
68/100
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
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Arial

WCAG AAA
72/100
Readability
/30
23/30

16px · LH 1.50

Hierarchy
/20
5/20
WCAG
/25
24/25

9.31:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

Arial

Sans

Body Font

Arial

Sans16px

Contrast Ratio

9.31:1

WCAG AAA (≥7:1)

Reading Comfort

~37 CPL

Narrow lines
24px
h3
16px
p

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

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

❌ Very complex text: Flesch score 27/100. Consider shorter sentences and simpler words.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 9.3:1).

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

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

Flesch 27

Color Palette

5 unique colors
2.38:1 Fail Light
#ffffff
Background· 74.59999999999998%
#a7a8aa
Other· 7.1%
#1d568d
Primary· 10.1%
#3f73a1
Secondary· 1.6%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

Social Media

1
Twitter/X WidgetsFree

Social widgets and sharing tools

2

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

3 Resources

2
Scripts
1
Styles
0
Async
2
Defer

Top Script Sources

computernetworkingnotes.com(1)static.cloudflareinsights.com(1)

Website Identity

computernetworkingnotes.com

16 years old
Location detected: 🇨🇦 Canadavia ip
BigRock Solutions Ltden-US

Social Profiles

FacebookYouTube

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Last analyzed: 24 May 2026 at 23:53

Historical Analysis & Change Tracking