Yes but at the same time no.

That 9 that was added in 2008 is not dialled if you are calling a cellphone from another cellphone so sometimes a cellphone number is 8 digits. Really they made a complete tossed salad of it.

They couldn't go and make it nice and simple like Europe where your number is +[country][number] that you can dial from any other cellphone anywhere else in the world.

I just checked, I have six entries for the same Peruvian cellphone number in my own cellphone. One to dial it from Chile on Entel, One to dial it from Colombia on Tigo (Neither of which works) One to dial it from Peru on Claro (which does work) One which identifies income text messages (Which does work) and one to send text messages to (which doesn't work.)

Sorry you will have to forgive me for having a Peruvian mobile but having no clue about numbering policy.