My preferred mechanism is the basic text registry file [1] followed by cmd-f or grep.

1. https://standards-oui.ieee.org/

Is this any better than the Wireshark database? https://www.wireshark.org/tools/oui-lookup.html

I have a tool to generate plausible-but-random MAC addresses that align to the vendor of your choice.

https://github.com/alrs/plausible

I got tired of Cableco, Inc. tech support identifying my router by mac address and ultimately them telling me to reboot/replace/reset my router rather than troubleshoot the actual issue.

So, I set my router's mac address to something that matched an ancient IBM mainframe. Fun conversations ensued.

Fun fact - the NSA oui prefix is 00:20:91

The go-to page for this used to be Mike Patton’s page: <http://www.mit.edu/~map/Ethernet/>

This is just another website that monetizes freely available information.

I happened to run across this yesterday, and it looks nice. However, it would be nice if it could accept different common formats so they don’t need manual editing, such as having - as a separator instead of :.

Arul's Utilities have been around for a long long time... fyi https://aruljohn.com/mac.pl

Sorry, but a MAC address page doesn't need cookies, nor cloudflareinsights.com, nor buysellads.net, nor carbonads.{com,net}, nor a completely ridiculous amount of Javascript.

There are plenty of better sites to use, such as Wireshark's:

https://www.wireshark.org/tools/oui-lookup.html