The 172 can only be spun in the utility catergory which restricts it to 2 Pob, and a smattering of gas.
Every 172 I have ever flown has a great big notice that states " Intentional spins prohibited" somewhere on it.
Most have entry speeds for semi aerobatic maneuvers printed somewhere, like wingovers, lazy eights, chandelles and unexcelerated stalls, but usually has the big old Spins prohibited on it as well.