All geographical features in GeoNames are categorized into one out of nine feature classes and further subcategorized into one out of 645 feature codes.

Prefix
geonames.feature
Links
Homepage
Contact
Missing Contact
Pattern for Local Unique Identifiers
Missing LUI pattern
Example Local Unique Identifier
ADM1   Resolve
Pattern for CURIES
Could not construct CURIE pattern
Example CURIE
geonames.feature:ADM1
Contributors
Providers

Providers are various services that resolve CURIEs to URLs. The example CURIE geonames.feature:ADM1 is used to demonstrate the provides available for geonames.feature. Generation of OLS and BioPortal URLs requires additional programmatic logic beyond string formatting.

Name Metaprefix URI
GeoNames Feature Code geonames.feature https://www.geonames.org/recent-changes/featurecode/ADM1/
Bioregistry bioregistry https://bioregistry.io/geonames.feature:ADM1