Credits and licences

DevBR Kit relies on third-party data and software. We thank their authors and list the relevant licences below.

IP geolocation

IP geolocation by DB-IP

We use DB-IP's IP to Country Lite database, updated monthly and licensed under Creative Commons Attribution 4.0 International (CC BY 4.0). It runs locally on our server and is used only to suggest a page language. Learn more in the Privacy Policy.

Open source software

• Astro — the framework used to build the site. MIT licence.
• mmdb-lib — reads the geolocation database in MMDB format. MIT licence.

Official references for the algorithms

Format and check-digit rules follow the public documentation of the Brazilian authorities responsible for each document:

• Receita Federal (federal revenue service) — CPF and CNPJ, including the alphanumeric CNPJ;
• TSE (Superior Electoral Court) — voter ID (título de eleitor);
• Caixa (Caixa Econômica Federal) — PIS/PASEP;
• SENATRAN (National Traffic Secretariat) — CNH driver's licence, RENAVAM and licence plates.

The specific source for each rule is listed on each tool page. Spotted a discrepancy? Get in touch.