Unit 49-108 on ISP DIST 52

On Weds 4-3-14 I heard 49-108 call ISP Dist 52 Disp on a accident on I-465. I heard 49-108 again on Fri 4/4/14.I have checked the ISP WIKI for a 49 prefix unit number and none are listed. Does anyone have a idea on what section of ISP 49 would be assigned to? Thank You.