What technology does a1.si use?

a1.si is built with Bootstrap, jQuery.

Is a1.si secure (HTTPS)?

Yes. a1.si uses TLS 1.2 with a certificate issued by GoDaddy.com, Inc., valid until Nov 18, 2026.

Hosting provider information for a1.si is not available yet.

What is a1.si's SEO score?

a1.si scored 80/100 for SEO in the latest analysis (great).

What is a1.si's overall website score?

a1.si has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.

a1.si

A1 Slovenija | A1

Last scanned Aug 24, 2026, 1:22 PM

Overall score

Great

Summary

A1 Slovenija je vodilni zasebni ponudnik celovitih komunikacijskih storitev v Sloveniji. This website uses jQuery. SEO is good (80/100) and accessibility is good (85/100). Security scores good (80/100) and performance good (80/100). Top issue: Meta description longer than 160 characters.

A1 Slovenija

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.

Ameriška ulica 4, Ljubljana, 1000, SLO

Top issues to fix

9 issues found · 2 high priority

Missing Strict-Transport-Security header
Security
Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
1 cookie without Secure/HttpOnly flags
Security
Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Meta description longer than 160 characters
SEO
Trim the meta description to under 160 characters to avoid truncation in search results.
Multiple H1 headings found
SEO
Keep a single H1 per page and demote the others to H2/H3.
robots.txt not found
SEO
Publish /robots.txt with a Sitemap: directive to guide crawlers.

+3 more issues — details in the sections below.

SEO

4 issue(s) found

Performance

1.47 s

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

A1 Slovenija

Founded: Jan 1, 1999

Facebook X (Twitter)Instagram LinkedIn YouTube

Contact

Email, phone, and address published on this site's own pages.

Email: info@a1.si
Phone: 040404040
Address: Ameriška ulica 4, Ljubljana, 1000, SLO

Meta tags

Title: A1 Slovenija | A1
Description: Pri A1 ne samo obdarujemo, ampak tudi nagrajujemo. Preveri ugodnosti, ki jih imajo A1 naročniki (pametno turistično zavarovanje, Wolt+, VOYO, A1 Mojster, itd.). Ugodni naročniški in predplačniški mobilni A1 paketi, trojčki (internet, TV in fiksna telefonija), telefoni, klici v tujino in še več na A1.si.
Canonical: https://www.a1.si
Language: sl-SI
Charset: UTF-8
Viewport: viewport-fit=cover, width=device-width initial-scale=1.0
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

Bootstrap jQuery

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: —
ASN: —

DNS records

Type	Value
A	—
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.2
Issuer: GoDaddy.com, Inc.
Subject: *.a1.si
Valid from: May 4, 2026
Valid to: Nov 18, 2026
Days until expiry: 85
SAN domains: *.a1.si, a1.si

Security headers

Strict-Transport-SecurityMissing
Content-Security-PolicyMissing
X-Frame-OptionsEnabled
X-Content-Type-OptionsEnabled
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: gzip · 3 cookie(s) observed

Content & assets

Headings

H1 4 · H2 14 · H3 6

Links

152 internal · 23 external · 20 broken

Images

73 total · 25 missing alt

Scripts / Styles

53 scripts · 6 stylesheets

JS / CSS size

167 KB · 10.9 KB

Page size

330 KB

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Meta description longer than 160 characters
Multiple H1 headings found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://a1.si
Final URL: https://www.a1.si/
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 1.46 s
HTML size: 330 KB
Redirect chain: https://a1.si → https://www.a1.si/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does a1.si use?: a1.si is built with Bootstrap, jQuery.
Is a1.si secure (HTTPS)?: Yes. a1.si uses TLS 1.2 with a certificate issued by GoDaddy.com, Inc., valid until Nov 18, 2026.
Who hosts a1.si?: Hosting provider information for a1.si is not available yet.
What is a1.si's SEO score?: a1.si scored 80/100 for SEO in the latest analysis (great).
What is a1.si's overall website score?: a1.si has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.
What company operates a1.si?: a1.si is operated by A1 Slovenija. 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.