CDs manufactured by www.flight13-duplication.com have always numbers xxx.xxx xxx.xxx in matrix-runout.
According to the dates & numbers already on the page, it's sequencial.
I propose to add instructions to www.flight13-duplication.com profile to use these numbers in LCCN.
Flight13 operates as a broker most of the time, as far as I know, so parts of the number belonging to (in this case) Kdg would be no surprise.
Also the way the credits are found suggests KDG did the actual pressing job.
The second number part could (COULD!) be referring to flight13... That has to be looked upon more closely to see if there is a pattern or not.