[mrngm]

You might also be interested in "geofeed" attributes in the WHOIS databases, in some database they can be found in a "remarks" field).

This record usually leads to an RFC 8805 formatted document that shows a mapping between IP address ranges and their (approximate) location. In RFC 9092, efforts were made to make this a more structural field.

[FujiApple]

Thank you, I'll look into those RFCs.