Team and credentials

NoCall is not an anonymous app: behind the project is a company registered in Spain with a physical address, a public tax ID and a real contact email. On this page we explain who we are, what drives us, how we organise the work, and which official resources you can turn to if you have been the victim of a phone scam.

Our mission

We built NoCall because phone spam and telephone scams have become an everyday problem in Spain, and most of the tools to fight them were opaque, paid for, or sold their users' data. We wanted the opposite: a community-maintained database, transparent in its methods and respectful of privacy.

Our goal is for anyone to be able to know, in seconds, whether an unknown number is trustworthy before picking up or calling back, and to automatically block abusive numbers effortlessly. Every number a user reports protects whoever gets the same call next.

How we work

Three principles guide every product decision we make:

• Privacy by design — We do not sell data and ask only for what we need: on the website you can report without an account, and reports are published without your name.
• Transparency — We publish how we calculate risk and how we moderate content, including which content we do not review. Anyone can check our methodology.
• Human review — An admin reviews every report and comment sent through NoCall before it is published. Comments from other sources are not reviewed and are shown with their origin stated.

Team roles

The work is split across several functions, some human and some automated, that complement one another:

• Development and maintenance — Building and running the app, the website and the infrastructure that syncs the block database.
• Content moderation — Human review of every report and comment sent through NoCall before it is published, and of the comments that app users flag.
• Data analysis and AI — Oversight of the AI worker that classifies calls and of the processes that ingest CNMC data and press releases.
• User support — Support through [email protected], including requests to rectify or remove numbers reported in error.

Legal entity

• Legal entity: Byteguard Sociedad Limitada
• CIF: ESB19417872
• Registered address: Laguna 8A, 06460 Badajoz, Spain
• Email: [email protected]