Question about Open directory cache

Greetings, I am running the command

odutil show cache

from the command I see an number of entries as this:

{
         "Negative" : true,
         "Names" : [
            "fred"
         ],
         "RefCount" : 1,
         "Detail Flags" : "0x01000101",
         "Entry Flags" : [
            "Refresh Required",
            "Membership Refresh Required",
            "Libinfo Refresh Required",
            "Libinfo Refresh Wait"
         ],
         "Last Access" : 140880,
         "Last Refresh" : 141516,
         "Expires" : -134316,
         "Found By" : [
            "Name"
         ],
         "Membership State" : {
               "Network Direct" : "Blocked",
               "Network Nested" : "Blocked",
               "Local Direct" : "Blocked",
               "Local Nested" : "Blocked"
            }

When I connect to the directory via Apache Directory Studio I don't see "fred" listed.

So, what shows up in the cache, how did these entries end up in my odtuil cache?

Could these be attempts to log into my system remotely?

Sincerly,

Tim