Service provided in range (6)
I believe the answer is:
massif
'in range' is the definition.
('massif' is part of 'range')
'service provided' is the wordplay.
'service' becomes 'mass' (I've seen this in other clues).
'provided' becomes 'if'.
'mass'+'if'='MASSIF'
(Other definitions for massif that I've seen before include "series of peaks" , "highlands" , "Mountain centre" , "Central mountain mass" , "Geological mountain formation" .)