Each coin has its own list of exchanges. You can see it at https://coinmarketcap.com/
Look here for your coins:
https://coinmarketcap.com/currencies/mazacoin/#markets - only Cryptopia
https://coinmarketcap.com/currencies/terracoin/#markets - some exchanges
https://coinmarketcap.com/currencies/digibyte/#markets - many exchanges
https://coinmarketcap.com/currencies/bytecoin-bcn/#markets - not so many.