I give +1 for phpipam -----Original Message----- From: Justin Wilson (Lists) <lists@mtin.net<mailto:%22Justin%20Wilson%20%28Lists%29%22%20%3clists@mtin.net%3e>> To: NANOG <nanog@nanog.org<mailto:NANOG%20%3cnanog@nanog.org%3e>> Subject: Re: ipv6 address management - documentation Date: Sun, 19 Nov 2023 23:38:28 -0500 Netbox or PHPipam. Phpipam allows you to break down subnets easier IMHo. Justin Wilson j2sw@j2sw.com — https://j2sw.com (AS399332) https://blog.j2sw.com - Podcast and Blog On Nov 16, 2023, at 1:09 PM, Jason Biel <jason@biel-tech.com> wrote: My recommendation: https://github.com/netbox-community On Thu, Nov 16, 2023 at 12:04 PM Aaron Gould <aaron1@gvtc.com<mailto: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?