OptionsCity is a certified vendor and connects to many exchanges. OptionsCity also has the ability to route orders through multiple clearing firm networks such as Goldman, Merrill, and others.  Below is a list of the exchanges OptionsCity supports. 

CBOT		Chicago Board of Trade
CME		Chicago Mercantile Exchange
CBOE		Chicago Board Options Exchange
C2		CBOE|C2
CFE		CBOE Futures Exchange
NYMEX		New York Mercantile Exchange
CBSX		CBOE Stock Exchange
MGEX		Minneapolis Grain Exchange
ICE		Intercontinental Exchange
AMEX		NYSE AMEX
ARCA		NYSE ARCA
NYSE		NYSE Liffe
BOX		Boston Options Exchange
Parity Energy		Parity Energy
ISE		International Securities Exchange