I'm new to FlyerTalk and unsure where to post this question. Here seems as good a place to start as any.

I have 6:00am Delta flight out of IAD and, while info re security gate hours is readily found on the airport's website along with the usual advice re check-in allowance times for domestic/international flights, nowhere can I find a simple answer to what time in the early morning Delta's ticket counters and/or checked baggage facility open. I'm hopeful someone in this forum can supply that information or direct me to where I might find it. Thanks in advance for any help forthcoming!