"IBM (US) Hilton code 0901452 is the domestic US IBM Hilton code. Same enforcement profile as the International IBM code: low US domestic verification rate (well under 10%) but higher at airport corridor properties known for corporate code abuse enforcement. London and European Hilton properties significantly increased enforcement post-2022. IBM's massive employee headcount and Hilton partnership status means the code is deeply embedded in Hilton's GDS system with occasional automated audit flags for first-time users."

"I was asked for my work ID when checking in at Hilton Tokyo in June on a corp rate."

"I’m actually due to stay at that Hilton in Newcastle tomorrow night - my employer doesn’t have a corporate code we can use on the app, but there is a specific Hilton.com URL we use for reservations (which is accessible not just from our corporate network) - booked a rate for tomorrow night for around 50% of what the cheapest Honors rate was - I have not had any communication from the hotel requesting proof of eligibility. In my case however I would be able to provide an ID if requested at checkin, which is clearly problematic for you."