ZDC reorganized their low sectors in that area almost 4 years ago. Sector 24 and Sector 28 no longer exist, they were combined into Sector 25 to form a single sector. The eastern part of the former ZDC airspace in this area was given to Cherry Point Approach (up to FL230).
This "new" Sector 25 has been using 123.850 and 279.650. I'm not sure what the status of 124.725, 350.350, 296.700 are ? I have not heard any of them in use recently. Has anyone heard them being used ?
Here is the update from ZDC dated September 24, 2019
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