The search (geocoding) service for RÚIAN data with the GeocodeSOE extension enables consistent search and localisation results across different map applications on the basis of the current data of the Register of Territorial Identification, Addresses and Real Estate (RÚIAN). The GeocodeSOE extension provides full-text search over selected tables for the suggest and find methods. The source data of the service are updated daily via the Public Remote Access to RÚIAN application. RÚIAN objects can be searched and located on the map (e.g., via the RÚIAN map view service https://ags.cuzk.gov.cz/arcgis/rest/services/RUIAN/MapServer) according to the following categories: higher territorial self-governing unit, district, municipality with extended powers, municipality with authorised municipal office, municipality, part of a municipality, administrative district in Prague, city districts and city parts, cadastral area, basic settlement unit, street, address, and parcel.