what county does the registration rcd come from?

Answer 1

If it is a pre-2001 UK registration, its from the Brighton area of Sussex.

Answer 2

RCD may stand for:

Rabbit calicivirus, a virus also known as Rabbit Haemorrhagic Disease

Radiocarbon dating, a scientific method of dating once-living matter

A residual-current device in electrical engineering

The Royal Canadian Dragoons, a Canadian Forces armoured regiment

Rye Country Day School in New York, United States

Really Cool Dude, a slang term used by school kids

Spanish Real Club Deportivo or Catalan: Reial Club Deportiu, various football clubs:
RCD Mallorca
RCD Espanyol de Barcelona
RC Deportivo de La Coruña

Rally for Culture and Democracy, a political party in Algeria

Rassemblement Constitutionnel Démocratique, a political party in Tunisia

Rassemblement Congolais pour la Démocratie, a rebel group in the Democratic Republic of the Congo - (Congolese Rally for Democracy) is the main rebel group fighting to overthrow President Kabila.

Racing Club Dordrecht - a tennis and volley ball club in Holland.

However i think you may mean RDC?

it may mean:

Budd Rail Diesel Car
Rassemblement Démocratique Centrafricain
Red Deer College
Redditch station - see UK railway stations - R
Remote Desktop Connection
Remote Differential Connection, a distributed file synchronization technology introduced with Windows Server 2003 R2 and Windows Vista
Rural District Council
Residual dipolar coupling a measurand in NMR-spectroscopy
Reverse Data Carrier : A measurement of outgoing RF levels.
Railroad Development Corporation, operator of railroads in developing countries (e.g., Guatemala)
Recursive Dimensional Clustering, a collision detection algorithm used in games programming.

its also the country code for La République Democratique du Congo, a country in sub-Saharan Africa

Answer 3

Democratic Republic of Congo.