Registered entities
Callsign Ltd.
Reg. No. 7277719Germany
Web presence
Audience by country — top 5 markets by share of visits.
| Country | Share |
|---|---|
| United States | 25.2% |
| United Kingdom | 20.9% |
| Bangladesh | 18.1% |
| Turkey | 9.2% |
| Brazil | 7.9% |
Innovation
6 patent families (3 granted) — focus: Physics & computing; filing pace slowing. Cited 263 times.
| Year | Filings |
|---|---|
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 1 |
Social engagement
Social engagement: 48.9K social following, 5 posts in the last 12 months — below the industry typical range.
Investor mix
22 investors on record; lead investors include Accel, PTB Ventures.
| Investor type | Count | Share |
|---|---|---|
| Venture capital | 18 | 82% |
| Private equity | 1 | 5% |
| Accelerator & incubator | 2 | 9% |
| Other / undisclosed | 1 | 5% |
Share of voice
Share of voice in United Kingdom: 100% of web traffic across its competitive set; worldwide: 1%.
Recent activity
20 May 2026
Partnership
e& UAE
19 May 2026
Event
London's Gaming Leaders' Summit
4 Nov 2025
Leadership hire
Chief Technology Officer