DC
110xxxx - DC
111xxxx - DC
113xxxx - WMATA? (seen on ARL WMATA range testing TGs)
114xxxx - DC Cache?
120xxxx - Unknown (FBI?) (1208383 used by Arlington PD on VSP FFX 1&2 on 1/1/19)
121xxxx - Unknown Federal (USSS?)
122xxxx - Unknown Federal (USCG?)
1223xxx - USCG
124xxxx - Unknown
125xxxx - US Army - Ft. Belvoir
126xxxx - US Park Police
129xxxx - Norfolk Southern Railroad PD

MD
211xxxx - Maryland Aviation Administration
222xxxx - Anne Arundel
236xxxx - Prince George's
240xxxx - Frederick
251xxxx - Montgomery
252xxxx - Prince George's
253xxxx - Prince George's

VA
310xxxx - Alexandria
313xxxx - Arlington
316xxxx - Fairfax PD
31698xx - GMU PD
317xxxx - Fairfax PD
3170xxx - Fairfax School Security & NVCC Police
318xxxx - Fairfax FD
318xxxx - Arlington FD & Alexandria FD
320xxxx - Fairfax Cache? OEM?
3200xxx - VDOT
32045xx - Fairfax Cache? OEM?
321xxxx - Fauquier FD (units on Stafford system)
324xxxx - Loudoun
325xxxx - Loudoun?
329xxxx - Prince William PD, FD, Sheriff
331xxxx - ?
332xxxx - Prince William Schools
334xxxx - Stafford Sheriff
335xxxx - Stafford FD
336xxxx - Stafford Utilities
337xxxx - Metropolitan Washington Airports Authority
339xxxx - Manassas / Manassas Park
410xxxx - Virginia State Police
411xxxx - Spotsylvania Fire
412xxxx - Caroline Sheriff & Fire
420xxxx - Caroline Schools
421xxxx - VDOT
442xxxx - Fredericksburg
611xxxx - Spotsylvania Schools
711xxxx - Spotsylvania Public Works

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