runsonwhat

A1 Bulgaria's tech stack

What does A1 Bulgaria use?

A1 Bulgaria (a1.bg) uses at least 21 tools we can see from public records, including Microsoft 365 for email and documents, Google Analytics for analytics and Let's Encrypt for security. Last checked .

Industry
Mobile Phone
Size
1,001–5,000 employees
Based in
Bulgaria
Founded
1994
LinkedIn
Company page
Re-check liveVisit a1.bg
Tools found
21
Categories
8
Layers
4 of 5
Last checked
Oct 2026

A1 Bulgaria's stack, layer by layer

Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.

Application

5 tools, what the product is built with

Frontend

Media & UI

Data & Observability

2 tools, what they measure and store

Analytics

Go-to-market

6 tools, how they find and keep customers

Marketing

Ads & Pixels

Company Ops

8 tools, what the team runs on day to day

Workspace

Collaboration

Security & Compliance

Companies like A1 Bulgaria also use

Tools common among companies with a similar stack that we haven't found at A1 Bulgaria.

Companies with a stack like A1 Bulgaria's

Ranked by shared tools, with rare tools counting more.

More Mobile Phone companies

Other Mobile Phone companies we've checked.

A1 Bulgaria tech stack FAQ

What tools does A1 Bulgaria use?

We've found 21 tools at A1 Bulgaria (a1.bg). Application: Google Fonts, YouTube and Next.js. Data & Observability: Google Analytics and Microsoft Clarity. Go-to-market: Meta Pixel, Google Ads and TikTok Pixel. Company Ops: Microsoft 365, Let's Encrypt and reCAPTCHA. Last checked October 2, 2026.

What email provider does A1 Bulgaria use?

A1 Bulgaria uses Microsoft 365 for email and documents. We found Microsoft 365 through email records and DNS verification records.

What analytics tools does A1 Bulgaria use?

A1 Bulgaria uses Google Analytics and Microsoft Clarity for analytics. We found Google Analytics through website code.

Does A1 Bulgaria use Microsoft 365?

Yes. We found Microsoft 365 at A1 Bulgaria through email records and DNS verification records. Microsoft 365 is used by 245,233 companies we track.

How does runsonwhat know what A1 Bulgaria uses?

We read public traces only: A1 Bulgaria's DNS and email records, certificate logs, the code its website loads, and published subprocessor lists. A tool is listed only when a direct record backs it up. DNS is rechecked weekly and the website monthly.

We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.