How can I find my IP address - not my company's router, but my local machines I run rails servers at ports 3000 and 5000.  

What do I use (or how do I find) the IP address of my Mac?

Not the one used for web browsing which is my companies host supplied IP but rather my local machine one. 

I imagine it would be 192.168.x.x?
I used: 

ipconfig getifaddr en1