Base registry for address
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Base registry for address is an address and location-related database that anyone can use for free as a base registry.
Background of Efforts
Address and location information is used as entries in many public and private ledgers, such as addresses of individuals and addresses of corporations and public facilities. Addresses and locations are structured as shown in Figure 1. However, town information and residential address information are managed separately by municipalities, and lot numbers are managed separately by registry offices. Therefore, standard addresses and locations cannot be managed in an integrated manner by the government. In addition, the hierarchical structure of address and location descriptions in general circulation varies from area to area, and there are many special cases, making it difficult to link addresses as a key. In Digital Agency, base registry for address is developing address and location information.
Outline of Initiatives
In FY 2021 (FY 2021), we used existing addresses and addresses held by the government to develop the initial database (see Figure 2), and developed the functions required to operate and manage the initial database (see Figure 3). The initial database is positioned as an experimental version developed by Digital Agency, and each local government publishes it in CSV format on the registry catalog website, making it available to the public.
As shown in the table below, we have updated and posted the final specifications for the format and explanatory manual (to be published at a later date). (See Related Information.) We began publishing the final specifications at the end of fiscal 2023 (fiscal 2023).
| Issues in initial data development | Response | Timing of response |
|---|---|---|
| Shortage and fluctuation of town names | Comparison with information held and managed by local governments and incorporation of confirmation results | To be implemented by the end of fiscal 2024 (fiscal 2024), reflected and published in the database |
| Omission of Local Government Implementing Residential Indication | Confirm with the local government whether or not the residence is indicated, and reflect the confirmation results | |
| External character record from real estate registration not reflected | Development of character identification and degeneracy lists | Sequentially reflect and publish in database |
| Same town in same municipality | System modification to enable response | |
| Not supported for Kyoto Street names | Received data from Kyoto City and improved data and system | |
| Few postal codes (about 15%) | 95% linkage | |
| Lot number not supported | Preparation of lot number based on map provided by registry office |
In addition, it was stipulated in the "Address _ Town Code" item for each system in base registry for address, the standard specifications for information systems and linkage requirements for local public organizations in , that "code values for town IDs specified in the " Town Master Data Set "to be developed by Digital Agency". For this reason, base registry for address plans to collect information from local governments during fiscal 2024 (fiscal 2024) and develop a database, and from fiscal 2025 (fiscal 2025) onward, to collect and provide updated information from local governments as needed in order to keep the information up to date. base registry for address
Related Information
- Registry Catalog (Data Download)
- Data Format (Specification Finalized) (Excel / 98 kb) (updated on January 15, 2024)
- Base registry for address Data Manual (finalized version) (in preparation for release)
- Data Terms of Use
- Publication of Conversion Converter for Map Data (Map XML Format) Provided by Registry Office
- About base registry for address Geocoder (PDF / 206 kb)