'its whereabouts' is a correct and usable phrase in written English.
It is used to refer to the place or location of something. For example: "The police are still trying to determine its whereabouts."
Voyager leaves the solar system, taking the controversy about its whereabouts with it.
He responded that he was unable to trace it but speculated about its whereabouts, one of which was that it was returned to the NYAS.
Its whereabouts are unknown even though it is known it was commissioned.
Sharman doesn't like the suggestion that it has spent months being less than candid about its whereabouts.
There were no good photographs of it, but the panel was known to scholars even if its whereabouts were unknown for more than 30 years.
Even if they cannot locate it, scientists are confident the little probe will eventually make its whereabouts known.
Its whereabouts are unknown.
"And its whereabouts were completely unknown since the 1960s".
May and Fields professed ignorance about its whereabouts.
Thumping old tunes give a voice to its whereabouts.
Mr. Corzine has said he knows nothing of its whereabouts.
