What is the rank of REI network?

Could you please clarify what you mean by the "REI network" and its rank? Are you referring to a specific cryptocurrency, blockchain network, or financial institution? Depending on the context, the rank could be determined by various factors such as market capitalization, trading volume, user base, adoption rate, or other relevant metrics. Without specific information, it's difficult to provide an accurate answer. Could you please elaborate on what you're referring to?