You can do it by using the SQL query below;
NOTE: You want to run the query on none-production farm or make sure you have backup of your DB (Hope you are familiar with Microsoft-sharepoint supportability on querying the DB)
"
select u.tp_Login
as [User Alias],
tp_DisplayName as [View Name],
d.DirName
+
'/'
+ d.LeafName
as [URL],
w.tp_ZoneID
from AllDocs d
with(nolock)
join WebParts w
on w.tp_PageUrlID
= d.Id
left
outer
join UserInfo u
on w.tp_UserID
= u.tp_ID
where w.tp_WebPartTypeId
=
'2A441B55-42A8-7EE8-A573-12530DBD02A8'
order
by [User Alias]
DESC
"
Replace the WEbPartTypeId with the guid of the web part you are working on. Another advantage of the query above, it will return web parts added on personal views too (admins cannot see web part on personal view through GUI)
Let me know how that goes!