My recommendation:

https://github.com/netbox-community

On Thu, Nov 16, 2023 at 12:04 PM Aaron Gould <aaron1@gvtc.com> wrote:

For years I've used an MS Excel spreadsheet to manage my IPv4
addresses.  IPv6 is going to be maddening to manage in a spreadsheet. 
What does everyone use for their IPv6 address prefix management and
documentation?  Are there open source tools/apps for this?

--
-Aaron

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Jason