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xras.ru

https://xras.ru· First analyzed 19 May 2026· Updated 19 May 2026
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xras.ru
Desktop screenshot of xras.ru
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Mobile

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Hosting Provider

IP Address

62.61.18.93

Site Location

🇷🇺 Russiavia tld

Server Location

🇷🇺 Moscow, Russia

ASN

AS3218

Organization

Space Research Institute of Russian Academy of Sciences

Server

Apache

Nameservers

ns1.beget.ru.ns2.beget.pro.ns1.beget.pro.ns2.beget.com.+2 more

Performance

97

Core Web Vitals

Weight

First Contentful Paint
1.0 s10%
Speed Index
1.3 s10%
Largest Contentful Paint
25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
283 KB
22 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Space Research Institute of Russian Academy of Sciences

Technology Stack

2 Technologies Detected

CSS Frameworks

1

Web Servers

1

SEO Analysis

D59/100
15
9
1
Meta Tags12/15
Content12/12
Headings3/8
Technical13/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
X
xras.ruxras.ru

Лаборатория солнечной астрономии ИКИ и ИСЗФ

Сайт лаборатории солнечной астрономии и гелиофизического приборостроения ИКИ РАН и ИСЗФ СО РАН

Title Length43 chars

Recommended: 50-60 chars (~266px / 580px)

Description Length94 chars

Recommended: 120-160 chars

Issues (1)

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

Crawlability

Sitemap
robots.txt

15 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.

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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
navheader/footer
Text ratio:24%
Words:583
Token eff.:Optimal
Sections/1K:25.7
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary84w
Descriptive Headingsavg 2.7w
Canonical URL
Open Graph0/3
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
72/100
9
Passed
3
Critical
1
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
0/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 recommendations
  • Accessibility recommendation preview...

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.
60/100
A+
35 mg
CO₂e / view
283.4 KB
Page Weight
90%
Cleaner Than
New Visitor
40 mg
vs
Returning (cached)
20 mg
Annual (10K/mo)
4.2 kg
Emission Segments
Data Center
8 mg
Network
8 mg
Device
19 mg
Resource Breakdown
JavaScript
87.8 KB
Images
21.4 KB
CSS
129.3 KB
Fonts
28.4 KB
HTML
7.9 KB
Other
8.6 KB
Green Hosting Not Verified
Space Research Institute of Russian Academy of Sciences
4 recommendations
  • Carbon footprint recommendation preview...
B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

54d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

13.04.2026

Valid Until

12.07.2026

Subject Alternative Names (2)

www.xras.ruxras.ru

SHA-256 Fingerprint

E8:BB:21:59:72:FA:3F:98:4D:89:5C:8E:CB:AD:A8:7A:68:76:EB:E7...

Recommendations

Security recommendation preview

HTTP Headers

Developer Console

connection
Keep-Alive
content-encoding
📦 Gzip(gzip)
content-length
7759
content-type
text/html; charset=UTF-8
date
Tue, 19 May 2026 01:41:53 GMT
keep-alive
timeout=5, max=2000
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (2)

mx1.beget.com
mx2.beget.com

Domain Information

xras.ru

Domain Age
10y 2m

Created

26.02.2016

Expires

26.02.2027

Registrar

BEGET-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.
D
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
4 recommendations
  • Mobile compatibility recommendation preview...

Typography & Readability

DinCondensed + Arial

WCAG Partial
62/100
Readability
/30
21/30

12px · LH 1.50

Hierarchy
/20
5/20
WCAG
/25
16/25

1:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

DinCondensed

Sans

Body Font

Arial

Sans12px

Contrast Ratio

1:1

20 issues

Reading Comfort

~45 CPL

Optimal (45–75)
18px
h2
12px
h3
12px
p

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

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

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

⚠️ Partial contrast: 20 elements below WCAG AA threshold (min 1.0:1).

❌ 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.

Color Palette

10 unique colors
Dark
#000000
Background· 36.5%
#010425
Primary· 13.7%
#0b5dae
Accent· 8.6%
#03347c
Accent· 7.4%
#021a4b
Accent· 7.1%
#468fbe
Secondary· 6.4%
#8fd9ee
Accent· 5.5%
#4f6173
Secondary· 4.8%

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Scripts & Styles

3 Resources

2
Scripts
1
Styles
1
Async
0
Defer

Top Script Sources

mc.yandex.ru(1)local(1)

Website Identity

xras.ru

10 years old
Location detected: 🇷🇺 Russiavia tld
BEGET-RUru

Social Profiles

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Last analyzed: 19 May 2026 at 01:42

Historical Analysis & Change Tracking