Where can I buy ordinal Doge?

Excuse me, could you please clarify what you mean by "ordinal Doge"? I'm not familiar with this specific term in the context of cryptocurrency. Are you referring to Dogecoin, a popular cryptocurrency that features the Shiba Inu dog as its mascot? If so, you can purchase Dogecoin on various cryptocurrency exchanges such as Binance, Coinbase, or Kraken. These platforms allow you to buy and sell cryptocurrencies using fiat currencies like USD or EUR. However, please note that investing in cryptocurrencies involves significant risks, including the risk of losing your investment, so it's essential to do your research and understand the risks before investing.