ysn.ru

https://ysn.ru· First analyzed 02 Jun 2026· Updated 02 Jun 2026

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ysn.ru

Mobile

Sponsored

Hosting Provider

Institute of Cosmophysical Research and Aeronomy

IP Address

84.237.111.10

Site Location

🇷🇺 Russiavia phone

Server Location

🇷🇺 Novosibirsk, Russia

ASN

AS5387

Server

Nginx

Nameservers

ns2.ysn.ru.ns1.ysn.ru.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.5 s10%

Speed Index

2.0 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.9 MB

56 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

CMS

WordPressv7.0

Infrastructure

Hosting

Institute of Cosmophysical Research and Aeronomy

Technology Stack

10 Technologies Detected

CSS Frameworks

Tailwind CSS

Material UI

Icon Libraries

Material Icons Heroicons

Plugins

Libraries

UI Components

Web Servers

Languages

SEO Analysis

D50/100

Meta Tags5/15

Content5/12

Headings7/8

Technical14/21

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

ysn.ruysn.ru

Сеть "Наука"

Сеть передачи данных Якутского Научного Центра

Title Length12 chars

Recommended: 50-60 chars (~74px / 580px)

Description Length46 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (13/16) — critical for accessibility and SEO

10 issues found

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Local SEO

Local Search Readiness

12/100

Poor

4 11 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

F31/100

Bot Access

20/25

Machine Read.

4/25

Schema Data

0/25

Citation

7/25

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:4%

Words:223

Token eff.:Too Short

Sections/1K:17.9

Structured Data

No Schema

Citation Readiness

Opening Summary10w

Descriptive Headingsavg 1.8w

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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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.

67/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

15/20

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

11/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

6/15

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.

30/100

238 mg

CO₂e / view

1.9 MB

Page Weight

50%

Cleaner Than

New Visitor

272 mg

Returning (cached)

136 mg

Annual (10K/mo)

28.5 kg

Emission Segments

Data Center

53 mg

Network

57 mg

Device

128 mg

Resource Breakdown

JavaScript

502.7 KB

Images

877.3 KB

CSS

189.3 KB

HTML

5.4 KB

Other

346.3 KB

Green Hosting Not Verified

Institute of Cosmophysical Research and Aeronomy

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

50d

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

Valid From

23.04.2026

Valid Until

22.07.2026

Subject Alternative Names (2)

www.ysn.ruysn.ru

SHA-256 Fingerprint

CB:7C:34:00:73:93:68:D7:34:C9:4B:BB:C0:1B:A6:4A:3D:96:5A:06...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Tue, 02 Jun 2026 01:51:53 GMT

link

<https://ysn.ru/index.php?rest_route=/>; rel="https://api.w....

server

nginx

x-powered-by

PHP/8.2.30

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

mx.ysn.ru

Domain Information

ysn.ru

Domain Age

27y 2m

Created

16.03.1999

Expires

31.03.2027

Registrar

REGRU-RU

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.

72/100

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

Typography & Readability

Geist

WCAG Partial

67/100

Readability

/30

14/30

13px · LH 1.50

Hierarchy

/20

15/20

2.77x ratio

WCAG

/25

16/25

2.59:1 min contrast

Performance

/25

22/25

System fonts

Heading Font

Geist

Sans36px

Body Font

Geist

Sans13px

Contrast Ratio

2.59:1

1 issue

Reading Comfort

~42 CPL

Narrow lines

36px

13px

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

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

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 2.6:1).

❌ Broken heading hierarchy: 3 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

✅ Strong hierarchy: Headlines are 2.8x larger than body text.

✅ System fonts: Zero font loading delay — best possible LCP impact.

Buy on MyFonts

Color Palette

4 unique colors

Light

#8e9f9c

Secondary· 2.1%

#f6f7fb

Primary· 92.30000000000003%

#c2d2ca

Secondary· 3.4%

#dfeae5

Secondary· 2.3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

14 Resources

Scripts

Styles

Async

Defer

Top Script Sources

ysn.ru(5)mc.yandex.ru(1)

Website Identity

ysn.ru

[email protected]

+74112390422

27 years old

Location detected: 🇷🇺 Russiavia phone

REGRU-RUen

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Last analyzed: 02 Jun 2026 at 01:52

Historical Analysis & Change Tracking