Are you a member of that ward or is that ward in your stake? If so, then it is available in the Ward Directory and Map app in the resources menu of the ChurchofJesusChrist.org website. If that ward is another ward in your stake then you can select it from the unit drop-down list-box found in the top left of the directory pane. If that ward is outside your stake then that directory is not available due to privacy restrictions.
JD Lessley
Have you tried finding your answer on the ChurchofJesusChrist.org Help Center or Tech Wiki?