Library /sys$common/syshlp/tcpip$ucp_help.hlb ZERO, NFS_SERVER, Qualifiers, /HOST  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /HOST=host

    Optional. Default: All users, all hosts.

    With /USER_NAME, clears the counters relating to the specified
    users sharing the specified OpenVMS account.