What does 617 tattoo mean?

I'm curious to know, what exactly does the number 617 represent in the context of a tattoo? Is it a significant date, a personal code, or perhaps a reference to a particular community or group? I'm interested in understanding the significance and meaning behind this number when it's featured as a tattoo. Can you provide some insight into its potential meanings and the possible motivations behind choosing to wear it on one's skin?