Moderator: Hawaii-based airlines & Hawai'i forums
Join Date: Mar 2003
Location: Ka ʻĀpala Nui, Nuioka
Programs: NEXUS/Global Entry, Delta, United, Hyatt, IHG, Marriott, and Hertz
Posts: 18,686
Welcome to FlyerTalk@Jason2018!
As far as I know, the Trip Confirmation Number (PNR) is just a randon six-character identifier that is supposed to be unique in the reservations system; there's nothing that can be gleaned or extrapolated from it as far as airline (this can be determined by the first three digits of the ticket number), or fare (this is a separate data element). I believe Concur has robust reporting that can be used to solve your issues.