"hotelcorporatecodes.com lists BASF N0001125 in the "Rarely" ID check category alongside Dow Chemical, McDonald's, Nestlé, and Siemens. Chemical/industrial sector codes historically draw less scrutiny than consulting or finance codes. FlyerTalk noted: "The internet and all the sharing of corp rate codes has caused some hotel properties to have a lower ADR" but enforcement remains uneven; industrial company codes at US Hilton properties are rarely challenged."

"Hilton code for General Motors is not confirmed in major public corporate code databases, suggesting limited circulation. GM's geographic concentration in Michigan (Detroit, Warren, Flint) means Hilton properties in those markets are familiar with GM employee IDs. However, outside the Midwest, the code is less likely to trigger targeted verification. Mid-range Hilton brands (DoubleTree, Hampton) rarely verify."

"I have a client that requires me to use their rate when traveling on their dime. I’ve never been asked to provide ID, but I can simply say that I’m a contractor for said company."