How do I check the ASCII characters in a name

This script allows an ID to be entered and it will display the related ASCII characters.  Used to check for bad names.

set serveroutput on

   v_id varchar2(9) := '1329455';
   v_name varchar2(200);
   v_i number(4);

   select spriden_last_name||' '||spriden_first_name||' '||spriden_mi
   into   v_name
   from   spriden
   where  spriden_id = v_id
   and    spriden_change_ind is null;

   for v_i in 1..length(v_name) loop
      dbms_output.put_line(v_i||' '||substr(v_name,v_i,1)||' '||ascii(substr(v_name,v_i,1)));
   end loop;
Creation date: 5/22/2023 8:49 AM      Updated: 5/22/2023 8:50 AM