...
Recently the University of Applied Sciences and Arts Hannover has published data on German federal states and cities from all over the world in VIVO format on GitHub at https://github.com/HsH-Bibliothek/geodata and given it a DOI
...
There are further longstanding and new efforts to identify stable identifiers for organizations:
Organisation Identifier Project (collaboration of Datacite, Crossref and ORCID)
Please add any new information to the above list.
...