"Bayer 251321 is confirmed as an IHG corporate code. IHG enforcement is highly brand-dependent: milepro.com states "At InterContinental or Kimpton, you'll almost certainly need to show proof of eligibility" while "Holiday Inn Express properties rarely check." Bayer's heavy presence at InterContinental properties in European pharma hubs (Frankfurt, Basel, London) means real-world usage skews toward high-enforcement properties. FlyerTalk on IHG code verification: "They do often ask for ID. YMMV." Rated Medium because enforcement is brand-split."

"FedEx Freight American Freightways (954105683) is an IHG code for a FedEx freight division. The FedEx/IHG enforcement pattern applies across all FedEx business unit codes: IHG InterContinental properties request employee ID; IHG Holiday Inn Express properties essentially never do. FedEx's reported monitoring of hotel booking volume means anomalous usage could trigger company-side audit. FedEx employee IDs are standardized physical badges. Properties near FedEx facilities (Memphis TN, Indianapolis IN) are most verification-active."

"Overall, I have been asked for proof of corporate id or business card especially when using negotiated rates at individual properties. Now at most of these places our company has deeply discounted rates that can be 50% off the BRG and may have last room guarantee too. For example, I have been asked at the Hilton KL, IC Strings Tokyo, IC Jakarta, IC Frankfurt, IC GS Hong Kong, CP Zurich to name just a few. From friends experiences the GH Singapore is also known to ask for proof if some of the quite low negotiated rates are used. Now usually, I was asked once and then it was done and only twice at the Hilton KL, but not all the time on every stay."