Well if this was an apartment id say it’s a pretty standard 6 pair riser and DO NOT cut into it cause it’s possibly feeding apartments above.

But it you’re in a house so someone used 6 pair riser instead of quad or cat5 to run their phone lines. It’s basically only good for POTS and XDSL. You might be able to use it as a cable pull to pull some new cat5, but it’s unlikely.

I use fastmail. Since I’m already paying for it as my normal email service, I started using it as my incomming and outgoing email provider for seldhosted apps. Works fine, no complaints.