Sounds like it's all old ASA CRJ-200 flying.

If I recall this is what we flu
Out of IAD
PNS
CAE
CMH
ROA
PWM
BUF
ROC
LGA
GSO
GSP
JAX
MHT
YYZ
CVG
HSV
ORF
DTW

Out of ORD
SBN
CMH
BUF
ROC
ALB
PWM
CAE
ROA
GSO
GSP
CVG
HSV
ORF
DTW