All its markets are listed on this page.

https://coinmarketcap.com/currencies/dimecoin/#markets

Here's the list.

https://www.coinexchange.io/market/DIME/DOGE
https://www.livecoin.net/
https://www.coinexchange.io/market/DIME/BTC
https://yobit.net/en/trade/DIME/BTC
https://yobit.net/en/trade/DIME/USD

If you are considering buying on yobit check if its dimecoin wallets are under maintenance first. You can't withdraw any of yobit's coins whose wallets are under maintenance.