named-journalprint — print zone journal in human-readable form
      named-journalprint 
       {journal}
    
named-journalprint prints the contents of a zone journal file in a human-readable form.
      Journal files are automatically created by named
      when changes are made to dynamic zones (e.g., by
      nsupdate).  They record each addition
      or deletion of a resource record, in binary format, allowing the
      changes to be re-applied to the zone when the server is
      restarted after a shutdown or crash.  By default, the name of
      the journal file is formed by appending the extension
      .jnl to the name of the corresponding
      zone file.
    
named-journalprint converts the contents of a given journal file into a human-readable text format. Each line begins with "add" or "del", to indicate whether the record was added or deleted, and continues with the resource record in master-file format.
BIND 9.10.6rc2