Multi-home Utillity Alley Potholes - fix it my self or is there someone to call?
First step will be determining who owns the land. I'd start by contacting the landlord, as they should know who owns the land. Depending on where you live, the city/town hall should have lot surveys (these are required at the time of sale, in some areas). So if the landlord doesn't know who owns it, you should be able to look it up.

If it's an easement, maintenance likely falls to the property owner.  If it's outright owned by a utility, then it should be the utilities responsibility.  In all cases, it's almost never a renters responsibility.