Same number ranges for Service Master and Material Master?

Hello Gurus,

I have a doubt on number ranges for service master. I am wondering if these numbers are coming from the same pool of numbers used by material master.

Because, when we assign 990000001 to 999999999 for Service master, the material master should not use these numbers ( Possible only if they are coming from same pool of numbers)

Reason y i need this is, I dont want them to use same numbers i.e. we should be able to differentiate a material and a service. Please Reply soon.

Thanks in advance