Sounds like the neutral came loose or broke somewhere. If you know which order the outlets are in on the circuit, check the first one that isn't working, and the one that's still working immediately upstream from it. Or just start opening boxes and checking connections.
If the outlets were wired with the backstab holes, it's likely that one of the connections has come loose. Re-connect them with the wires wrapped around the screw terminals, and it'll make a better and more reliable connection.
If the outlets were wired with the backstab holes, it's likely that one of the connections has come loose. Re-connect them with the wires wrapped around the screw terminals, and it'll make a better and more reliable connection.