KFZ-D is a fully offline Android application for looking up German vehicle registration identifiers. The application recognises geographical identifiers, authority identifiers, special identifiers and diplomatic identifiers while you type. Features • Instant lookup while typing • Geographical identifiers • Government and authority identifiers • Diplomatic identifiers • Support for identifiers with multiple meanings • Automatic handling of upper/lower case and spaces • Fully offline • No advertising • No tracking • No user accounts • No Internet connection required The application analyses identifier prefixes only. It does not analyse complete registration numbers and cannot identify vehicle owners. Data status: 08/2026 All information is provided without warranty. Open-source software licensed under the MIT License.