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a1.si

https://a1.si· First analyzed 21 May 2026· Updated 21 May 2026
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a1.si
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Mobile

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Hosting Provider

A1 Slovenija

IP Address

80.95.232.34

Site Location

🇸🇮 Sloveniavia tld

Server Location

🇸🇮 Ljubljana, Slovenia

ASN

AS21283

Nameservers

lxadns3.simobil.si.lxadns2.simobil.si.lxadns1.simobil.si.lxadns5.simobil.si.+1 more

Performance

98

Core Web Vitals

Weight

First Contentful Paint
901 ms10%
Speed Index
1.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
9.2 MB
189 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
Infrastructure
Hosting
A1 Slovenija

Technology Stack

7 Technologies Detected

Analytics

2
Plausible AnalyticsPlausible

Frameworks

1
Reactv16.12.0

Libraries

1
jQuery

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

SEO Analysis

C63/100
18
7
1
Meta Tags7/15
Content3/12
Headings6/8
Technical23/25
E-E-A-T2/7
Images3/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile3/4
Indexability3/3
A
a1.sia1.si

A1 Slovenija | A1

Pri A1 ne samo obdarujemo, ampak tudi nagrajujemo. Preveri ugodnosti, ki jih imajo A1 naročniki (pametno turistično zavarovanje, Wolt+, VOYO, A1 Mojster, itd...

Description truncated.
Title Length17 chars

Recommended: 50-60 chars (~94px / 580px)

Description Length304 chars

Recommended: 120-160 chars

Issues (1)

  • • Very thin content (4 words). Search engines need substantial content for ranking.

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

5,585 URLs

robots.txt

27 rules

Local SEO

Local Search Readiness

25/100
Needs Work
6 15

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AI & LLM Readiness

D52/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
8/25
Citation
13/25

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
nav
Text ratio:1%
Words:1,274
Token eff.:Optimal
Sections/1K:10.2
Depth:1/5

Structured Data

3 JSON-LD
Organization×1.1WebSiteBreadcrumbListmicrodataSearchAction
sameAs entity links

Citation Readiness

Opening Summary141w
Descriptive Headingsavg 4.8w
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
70/100
12
Passed
4
Critical
3
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
17/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
5/15
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
5/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
8/15
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.
22/100
F
1.17 g
CO₂e / view
9.2 MB
Page Weight
5%
Cleaner Than
New Visitor
1.34 g
vs
Returning (cached)
669 mg
Annual (10K/mo)
140.4 kg
Emission Segments
Data Center
261 mg
Network
281 mg
Device
628 mg
Resource Breakdown
JavaScript
1.6 MB
Images
6.4 MB
CSS
1.1 MB
Fonts
2.1 KB
HTML
46.9 KB
Other
38.2 KB
Green Hosting Not Verified
A1 Slovenija
9 recommendations
  • •Carbon footprint recommendation preview...
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D

Security Score

41%Poor
Interactive

HTTPS

No WAF

180d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GoDaddy.com, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

04.05.2026

Valid Until

18.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.a1.sia1.si

SHA-256 Fingerprint

EE:E2:66:5F:AE:87:61:8B:15:4D:A8:0C:F2:77:E2:E0:CE:A1:00:61...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🔴 No Cache(private, no-cache, no-store, must-revalidate)
connection
keep-alive
content-encoding
📦 Gzip(gzip)
content-type
text/html;charset=UTF-8
date
Thu, 21 May 2026 23:56:15 GMT
expires
Thu, 01 Jan 1970 00:00:00 GMT
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

100

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

simobil-si.mail.protection.outlook.com

Domain Information

a1.si

Domain Age
15y 7m

Created

20.10.2010

Expires

20.10.2026

Last Updated

15.10.2025

Registrar

EPAG DOMAINSERVICES GMBH

DNSSEC
Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner
OneTrust
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: OneTrust
Data Protection Officer mentioned

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.
A
80/100
Mobile Friendly23 breakpoints
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
viewport-fit=cover, width=device-width initial-scale=1.0
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

A1Serif-Bold + A1Sans-Regular

WCAG Partial
63/100
Readability
/30
23/30

16px · LH 1.50

Hierarchy
/20
15/20

3.5x ratio · ✓ H1→H6

WCAG
/25
11/25

1:1 min contrast

Performance
/25
14/25

System fonts

Heading Font

A1Serif-Bold

Serif56px

Body Font

A1Sans-Regular

Sans16px

Contrast Ratio

1:1

19 issues

Reading Comfort

~36 CPL

Narrow lines
56px
h1
40px
h2
20px
h3
22px
h4
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 29/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 19 elements below WCAG AA threshold (min 1.0:1).

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

✅ Strong hierarchy: Headlines are 3.5x larger than body text.

GGoogle FontsBuy on MyFontsFlesch 29

Color Palette

7 unique colors
21:1 AAA Light
#ffffff
Background· 33.800000000000004%
#000000
Text· 7.3%
#a01c21
Primary· 23.6%
#821518
Accent· 15.7%
#c71c23
Accent· 12.8%
#c3a17b
Secondary· 5.7%
#3f0c0d
Accent· 1%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

1
OneTrustEnterprise

Cookie consent and privacy compliance tools

2

Categories

3

Total Tools

1

Enterprise

0

Mid-Market

Assessment: Well-developed marketing technology stack

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Scripts & Styles

30 Resources

20
Scripts
10
Styles
8
Async
4
Defer

Top Script Sources

a1.si(7)local(6)load.sst.a1.si(2)cdn.cookielaw.org(2)service.giosg.com(1)

Website Identity

A1 Slovenija

A1 Slovenija

Organization

A1 Slovenija je vodilni zasebni ponudnik celovitih komunikacijskih storitev v Sloveniji. Več kot 500 zaposlenih je zavezanih k ustvarjanju rešitev, ki več kot 700 tisoč uporabnikom bogatijo življenje v digitalni dobi.

www.a1.si/
15 years old

Ameriška ulica 4, Ljubljana

1000, Ljubljana

SLO

Location detected: 🇸🇮 Sloveniavia tld
EPAG DOMAINSERVICES GMBH📧 Microsoft 365sl-SIEst. 1999

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Last analyzed: 21 May 2026 at 23:56

Historical Analysis & Change Tracking