Well you don't say where you are from so I guess maybe.
Numbers are not tied physically to a phone line it is all logical links, but some countries do a regional boundaries for numbers for aggregation purposes. In Australia all numbers starting with 02 are in one state, where as all numbers beginning with 03 are in another.
What you can do is transfer the number to a SIP provider then you can use the number anywhere you like via a softphone client like Zoiper or GS Wave.