asteroidsathome.net

https://asteroidsathome.net· First analyzed 25 Apr 2026· Updated 25 Apr 2026

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asteroidsathome.net

Mobile

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Hosting Provider

Charles University

IP Address

195.113.29.201

Site Location

🇨🇿 Czech Republicvia ip

Server Location

🇨🇿 Prague, Czechia

ASN

AS2852

Organization

Charles University

Server

Apache

Nameservers

david.ruk.cuni.cz.golias.ruk.cuni.cz.cuce.ruk.cuni.cz.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

336 ms10%

Speed Index

437 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

32 KB

11 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Charles University

Technology Stack

1 Technologies Detected

Web Servers

Apachev2.4.65

SEO Analysis

D54/100

Meta Tags5/15

Content9/12

Headings8/8

Technical8/21

E-E-A-T3/7

Images4/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

asteroidsathome.netasteroidsathome.net

Asteroids@home

Title Length14 chars

Recommended: 50-60 chars (~90px / 580px)

Description Length14 chars

Recommended: 120-160 chars

Issues (1)

• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

9 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

D41/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

0/25

Citation

8/25

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

Text ratio:55%

Words:434

Token eff.:Optimal

Sections/1K:6.9

Structured Data

No Schema

Citation Readiness

Opening Summary14w

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 (10)

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.

74/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

14/20

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.

1 recommendation

•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.

61/100

A+

4 mg

CO₂e / view

31.6 KB

Page Weight

95%

Cleaner Than

New Visitor

5 mg

Returning (cached)

2 mg

Annual (10K/mo)

468 g

Emission Segments

Data Center

<0.001 g

Network

<0.001 g

Device

2 mg

Resource Breakdown

Images

958 B

CSS

28.3 KB

HTML

2.4 KB

Green Hosting Not Verified

Charles University

3 recommendations

•Carbon footprint recommendation preview...

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Security Score

76%Good

Static / Informational

HTTPS

No WAF

143d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

16.09.2025

Valid Until

16.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (4)

www.asteroidsathome.netasteroidsathome.netbeta.asteroidsathome.netimap.asteroidsathome.net

SHA-256 Fingerprint

07:1B:A5:C1:35:71:77:66:3F:76:C8:62:54:7E:EE:5B:E2:85:BF:E1...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

content-encoding

📦 Gzip(gzip)

content-length

2163

content-type

text/html

date

Sat, 25 Apr 2026 19:32:56 GMT

etag

"137e-5ed74360ea573-gzip"

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

ag1.cesnet.cz

ag2.cesnet.cz

Domain Information

asteroidsathome.net

Domain Age

13y 11m

Created

01.06.2012

Expires

01.06.2027

Last Updated

16.05.2018

Registrar

Tucows Domains Inc.

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.

33/100

Not 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.

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Candara

WCAG Fail

59/100

Readability

/30

17/30

16px · LH --

Hierarchy

/20

16/20

1.62x ratio · ✓ H1→H6

WCAG

/25

12/25

1.35:1 min contrast

Performance

/25

14/25

2 fonts

Heading Font

Candara

Sans26px

Body Font

Candara

Sans16px

Contrast Ratio

1.35:1

29 issues

Reading Comfort

~85 CPL

Wide lines

26px

24px

16px

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

⚠️ Wide lines: ~85 chars/line. Use max-width: 65ch for comfortable reading.

⚠️ Hard to read: Flesch score 31/100. Simplify sentences for wider reach.

❌ Low contrast: 29 elements fail WCAG AA (min 1.4:1). Increase text/background contrast.

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

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

Buy on MyFontsFlesch 31

Color Palette

6 unique colors

6.41:1 AA Dark

#000000

Text· 45.1%

#8e8e8e

Other· 6.3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

Website Identity

asteroidsathome.net

13 years old

Location detected: 🇨🇿 Czech Republicvia ip

Tucows Domains Inc.en

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Last analyzed: 25 Apr 2026 at 19:33

Historical Analysis & Change Tracking