I don't think ACCN is carried on Comcast in Montgomery County MD which is part of D.C. suburbs. I did some initial checking but I don't see it on the list of channels. I will have to do some further checking.
My state and I guess my area is no longer an ACC area. We have no ACC teams close by. UMD left the ACC and the closest I guess is Virginia Tech or UVA. Neither is in northern Virginia. That might determine any decision by Comcast to carry it. The way it was left last year, or maybe it was discussed here in 2019, Comcast wanted to negotiate a global package that would include all ESPN offerings, including ACCN. I don't know if that happens.
I wish I had more internet options, but I think many buildings negotiated exclusive contracts years ago with Comcast so the only other major option, Verizon FIOS, is not available.
I'll probably hook up with Hulu, Sling or the other options that might be available. I'll cancel at the end of the season.