If you have Python3 on your system, you can also use the PixelblazeEnumerator in both Python client libraries, either @nick_w’s (asynchronous), or mine (synchronous), to get a complete list of all the Pixelblazes on your network. (The links go to the relevant forum threads. Documentation and examples are in the github repositories for both libraries.)
If it’s not already on @wizard’s Giant List, it’d be great to add Zeroconf/Bonjour/Avahi support somewhere down the road.