How's this for starters. CV8 is not modifiable.
DCC MANUFACTURER ID NUMBERS
1: CML Electronics Limited
2: Train Technology
11: NCE Corporation
12: Wangrow
13: Public Domain & Do-It-Yourself Decoders
14: Lahti Associates
15: Wangrow
17: Advanced IC Engineering, Inc.
62: Tams Elektronik GmbH
66: Railnet Solutions, LLC
68: MAWE Elektronik
71: New York Byano Limited
73: The Electric Railroad Company
85: Uhlenbrock Elektronik GmbH
87: RR-CirKits
95: Sanda Kan Industrial (1981) Ltd.
97: Doehler & Haas
99: Lenz Elektronik GmbH
101: Bachmann Trains
103: Nagasue System Design Office
105: Computer Dialysis France
109: Viessmann Modellspielwaren GmbH
111: Haber & Koenig Electronics GmbH
113: QS Industries
115: Dietz Modellbahntechnik
117: cT Elektronik
119: The Signaling Solution, Inc.
121: ECCO GmbH
123: Massoth Elektronik, GmbH
125: ProfiLok Modellbahntechnik GmbH
127: Atlas Model Railroad Co., Inc.
129: Digitrax
131: Trix Modelleisenbahn
132: ZTC Controls Ltd.
133: Intelligent Command Control
135: CVP Products
137: A-Train electronics
139: RealRail Effects
141: Soundtraxx
143: Model Rectifier Corp.
145: Zimo Elektronik
147: Umelec Ing. Buero
149: Rock Junction Controls
151: Electronic Solutions Ulm GmbH & Co KG
153: Train Control Systems
155: Gebr. Fleischmann GmbH & Co.
157: Kuehn Ing.
159: Ernst Paul Lehmann Patentwerk
161: Roco Modellspielwaren
163: WP Railshops
165: Model Electronic Railway Group
170: AuroTrains
173: Arnold - Rivarossi
186: BRAWA Modellspielwaren GmbH & Co.
204: Con-Com GmBH
DCC MANUFACTURER ID NUMBERS
1: CML Electronics Limited
2: Train Technology
11: NCE Corporation
12: Wangrow
13: Public Domain & Do-It-Yourself Decoders
14: Lahti Associates
15: Wangrow
17: Advanced IC Engineering, Inc.
62: Tams Elektronik GmbH
66: Railnet Solutions, LLC
68: MAWE Elektronik
71: New York Byano Limited
73: The Electric Railroad Company
85: Uhlenbrock Elektronik GmbH
87: RR-CirKits
95: Sanda Kan Industrial (1981) Ltd.
97: Doehler & Haas
99: Lenz Elektronik GmbH
101: Bachmann Trains
103: Nagasue System Design Office
105: Computer Dialysis France
109: Viessmann Modellspielwaren GmbH
111: Haber & Koenig Electronics GmbH
113: QS Industries
115: Dietz Modellbahntechnik
117: cT Elektronik
119: The Signaling Solution, Inc.
121: ECCO GmbH
123: Massoth Elektronik, GmbH
125: ProfiLok Modellbahntechnik GmbH
127: Atlas Model Railroad Co., Inc.
129: Digitrax
131: Trix Modelleisenbahn
132: ZTC Controls Ltd.
133: Intelligent Command Control
135: CVP Products
137: A-Train electronics
139: RealRail Effects
141: Soundtraxx
143: Model Rectifier Corp.
145: Zimo Elektronik
147: Umelec Ing. Buero
149: Rock Junction Controls
151: Electronic Solutions Ulm GmbH & Co KG
153: Train Control Systems
155: Gebr. Fleischmann GmbH & Co.
157: Kuehn Ing.
159: Ernst Paul Lehmann Patentwerk
161: Roco Modellspielwaren
163: WP Railshops
165: Model Electronic Railway Group
170: AuroTrains
173: Arnold - Rivarossi
186: BRAWA Modellspielwaren GmbH & Co.
204: Con-Com GmBH