Browse 9,674 telecom companies in Czech Republic — registry-sourced from Czech Trade Register, scoped to NACE 61. Each record carries up to up to 500 firmographic attributes — from IČO and registered address to revenue, headcount and corporate group structure. The largest by revenue are O2 Czech Republic a.s. ($1.5B), T-Mobile Czech Republic a.s. ($1.3B) and Vodafone Czech Republic a.s. ($918M).
Top companies
The largest telecom companies in Czech Republic by revenue are O2 Czech Republic a.s. ($1.5B), T-Mobile Czech Republic a.s. ($1.3B) and Vodafone Czech Republic a.s. ($918M). The directory below ranks them — sort any column, or filter by sub-sector, company size and region.
Last updated June 2026.
Every Czech telecom companies record with all attributes, by API, bulk export or CRM enrichment.
Showing 25 of 9,674 Czech telecom companies· click a column to sort, or a company for its full record
| Wired telecommunications activities | 3,746 | $1.5B | |
| Other telecommunications activities | 3,196 | $1.3B | |
| Other telecommunications activities | 1,858 | $918M | |
| Wired telecommunications activities | 2,242 | $869M | |
| Wired telecommunications activities | 7 | $190M | |
| Wireless telecommunications activities | 4 | $140M | |
| Wired telecommunications activities | 776 | $112M | |
| Wired telecommunications activities | 776 | $112M | |
| Other telecommunications activities | 1,397 | $79M | |
| Other telecommunications activities | 533 | $66M | |
| Wired telecommunications activities | 776 | $43M | |
| Wireless telecommunications activities | 123 | $38M | |
| Wireless telecommunications activities | 7 | $36M | |
| Wired telecommunications activities | 56 | $36M | |
| Other telecommunications activities | 10 | $35M | |
| Wired telecommunications activities | 776 | $29M | |
| Other telecommunications activities | 222 | $24M | |
| Wired telecommunications activities | 59 | $20M | |
| Wired telecommunications activities | 187 | $18M | |
| Wired telecommunications activities | 25 | $15M | |
| Wireless telecommunications activities | 17 | $12M | |
| Wired telecommunications activities | 38 | $12M | |
| Wired telecommunications activities | 5 | $12M | |
| Wireless telecommunications activities | 2 | $12M | |
| Wired telecommunications activities | 196 | $12M |
This is a sample. The full database holds 9,674 Czech telecom companies, each with every attribute in the dictionary below.
Database overview
Distributions across all 9,674 telecom companies in Czech Republic — registry-sourced from Czech Trade Register and refreshed daily.
These distributions are computed from the full Czech telecom companies database, not the sample above.
Data coverage
Czech Republic business database
Legal name, registered address, NACE sub-sector, legal form, founding year and website. Every record is keyed to its IČO — the stable Czech Trade Register identifier that survives name changes and rebrands, making it the most reliable CRM deduplication key for Czech Republic data.
Each company is geocoded to GPS coordinates covering its registered seat and operating locations across Czech Republic, with a precision level on every point — useful for territory planning and proximity targeting.
Records carry the IČO and, where applicable, the VAT registration number, with a flag for when the two coincide. These are the cleanest match keys for enriching lists and cross-referencing against the national tax authority and your CRM.
InfobelPRO resolves the corporate hierarchy — parent, subsidiaries and the size of the worldwide corporate family — so sales and compliance teams can see who controls an entity before engaging or onboarding it.
Annual revenue in local currency, EUR and USD, employee headcount and founding year, with multi-year history where filed. Figures are sourced from Czech Trade Register filings and carry an Actual-or-Modeled reliability flag.
Data dictionary
The full field catalogue behind each record. Contact data (email, phone, executives) is part of the licensed dataset but is never displayed on this page.
Source comparison
Czech Trade Register gives you legal registration data. InfobelPRO adds the commercial intelligence sales, marketing and compliance teams actually need.
| Attribute | Czech Trade RegisterFree official registry | InfobelPRO |
|---|---|---|
| IČO | Yes | Yes — on 99.9% of records |
| Legal name & registered address | Yes | Yes |
| Company status (HQ / branch) | Yes | Yes — daily sync |
| NACE sub-sector classification | Yes | Yes — up to 6 codes |
| Annual revenue (local / EUR / USD) | Filings only | Yes — multi-currency |
| Employee count | No | Yes |
| Decision-maker contacts | No | Yes — licensed |
| Geocoded coordinates | No | Yes |
| Corporate group structure | Filings only | Yes — full hierarchy |
| API access | No | Yes — REST API |
| Bulk export (CSV / JSON / Parquet) | No | Yes |
| Update frequency | Periodic (filings) | Daily sync |
FAQ
API access, bulk export or CRM enrichment — 9,674 records with up to up to 500 attributes each.
Explore more
Related directories
See all company directories in Czech Republic, explore the full Czech Republic business database In the US classification, related SIC codes include SIC 4813 — Telephone Communications, Except Radiotelephone, SIC 4812 — Radiotelephone Communications and SIC 4899 — Communications Services, Not Elsewhere Classified., or see how Czech Republic fits into the wider Europe business database.
