If you are looking for government-issued address or residential map data, "20214.zip" specifically refers to the dataset for in Nagano.
: Many developers use the Geospatial Information Authority of Japan (GSI) data, typically found at URLs like https://saigai.gsi.go.jp/jusho/download/data/20214.zip . Download 20214 zip
If you have already downloaded a file named 20214.zip and need to use it: : If you are looking for government-issued address or
: These files typically contain CSV or XML data formatted under the Government Standard Terms of Use 2.0. 2. General ZIP Download and Extraction Download 20214 zip