About Callsign
Callsign is pioneering digital trust through proprietary technology that uniquely mimics the way humans identify each other in the real world. Positive identification of genuine users delivers privacy, safety and minimal friction whilst ensuring that bad actors are blocked. Through a simple Swipe or Type, users can be personally recognized to a 99.999% accuracy, delivering the highest fidelity AI based user recognition for the digital world. MillionPhones has 24 verified mobile phone numbers for Callsign employees across 7 departments, helping sales teams connect with decision-makers directly.
Callsign Leadership — Direct Phone Numbers Available
Andreas E. — Commercial Director
Sales
Matthew G. — SVP of Operations
Operations
Maya B. — VP Security
Other
Callsign Phone Numbers by Department
| Department | Contacts | Verified Mobiles | Coverage |
|---|---|---|---|
| Other | 9 | 64% | |
| Engineering | 9 | 86% | |
| Product | 1 | 57% | |
| Marketing | 1 | 84% | |
| Sales | 1 | 84% | |
| Operations | 1 | 57% | |
| Customer Success | 1 | 60% |
Frequently Asked Questions
How can I get phone numbers for Callsign employees?
MillionPhones has 24 verified mobile phone numbers for Callsign employees. Sign up to access direct dial numbers for decision-makers across 7 departments.
Where is Callsign headquartered?
Callsign is headquartered in London, England, UK.
How many employees does Callsign have?
Callsign has approximately 272 employees.
What departments can I reach at Callsign?
MillionPhones has verified mobile numbers for Callsign employees in Other, Engineering, Product, Marketing, Sales, Operations, Customer Success departments.
What industry is Callsign in?
Callsign operates in the Computer and Network Security industry.