MEMORY_RANGE_ENTRY - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers
#ifndef _NTMMAPI_H
// begin_private
#if (PHNT_MODE != PHNT_MODE_KERNEL)

typedef struct _MEMORY_RANGE_ENTRY
{
    PVOID VirtualAddress;
    SIZE_T NumberOfBytes;
} MEMORY_RANGE_ENTRY, *PMEMORY_RANGE_ENTRY;

#endif
// end_private
#endif

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This structure is documented in Windows SDK.