It should be saved as a .mdb (Access/Jet data file) file, so...

...maybe that info. will help you see it. If not, I suggest you search your
disk for recently created .mdb files.

Once you know where it is, what you can do is
a. create a new Directory type mailmerge
b. select the .mdb as a data source
c. insert a single row of merge fields, either tab-delimited or in a
single-row table, to list the info you need. If you want column headers, put
them in the page header. Sometimes it's convenient to use landscape paper
orientation.
d. merge and view/print.

If you have Access, in theory you could open your .mdb and use Access
reporting to list the contents. However, I would be careful attempting that
as .mdbs created by MailMerge have a special structure (one table and one
query - the query is the datasource) - if you modify it, Word may not
recognise it as an "Office Address List" (OAL) and it will suddenly be
harder to work with. For example, creating more than one additional table
has this effect. So you could consider creating a separate Access database
specifically for listing OALs, and link to the tables in the specific OAL
you want to list. Never tried it myself though.