On Feb. 1 as New York Community Bancorp stock fell amid worries about its real estate exposure, a regional bank hundreds of miles away got a call from Moody's. The ratings agency wanted to know if the bank was seeing any fallout. Moody's asked the bank, based in the U.S. south, a series of questions, ranging from whether its clients were worried and had withdrawn any deposits to what kind of funding facilities it had in place for contingencies, the bank's CEO said. The southern regional bank wasn't the only one to receive such a call.