"ConocoPhillips' IHG code (262552) is an energy company code. ConocoPhillips HQ is in Houston TX with major operations globally. IHG enforcement is tier-based: InterContinental properties near Houston (Energy Corridor) encounter ConocoPhillips employees regularly and have established verification processes. Holiday Inn Express: minimal enforcement. ConocoPhillips is a "major" oil company with recognizable employee credentials. No specific 262552 denial documented in FlyerTalk."

"FedEx Ground is one of several FedEx business unit codes in IHG's GDS system. The general FedEx IHG pattern documented on FlyerTalk: IHG has been "very careful" in recent years about verifying codes at full-service brands. FedEx Ground staff IDs are company-standard. Properties near FedEx Ground hubs (Indianapolis, Memphis) are more familiar with FedEx employee badges and may request them. Holiday Inn Express near distribution centers: essentially never check."

"A former Siemens employee posting on FlyerTalk noted: "When checking in as a group of Siemens employees, we were never asked for ID. However, when traveling alone, front desk staff often asked for some form of ID." IHG enforcement is highly fragmented across its franchise network. Siemens's code falls into the mid-tier corporate bucket. At InterContinental/Kimpton properties, verification is near-certain; at Holiday Inn Express, essentially never. IHG's 2018 T&C update explicitly added unauthorized corporate rate use as grounds for account closure."