The WSANAMESPACE_INFO structure contains all of the registration information for a name space provider.
typedef struct _WSANAMESPACE_INFOW {
GUID NSProviderId;
DWORD dwNameSpace;
BOOL fActive;
DWORD dwVersion;
LPWSTR lpszIdentifier;
} WSANAMESPACE_INFOW, *PWSANAMESPACE_INFOW, *LPWSANAMESPACE_INFOW;