On the host with the keytab file, run the ktutil command, read the keytab, then list the principals. Principals are also known as the keylist.
The following example displays the keylist in the /etc/krb5/krb5.keytab file on the denver host.
denver # /usr/bin/ktutil ktutil: read_kt /etc/krb5/krb5.keytab ktutil: list slot KVNO Principal ---- ---- --------------------------------------- 1 5 host/denver@EXAMPLE.COM ktutil: quit