[This is preliminary documentation and subject to change.]
The QueryLease method requests information about a specific address reservation.
HRESULT QueryLease(
  DWORD dwResvID, 
  BDN_ARS_LEASE * pbalReservation
);
 Returns S_OK if the method successfully returns the reservation information. Otherwise the method returns E_FAIL.
IBdnAddressReserve::RequestLease