Exhibit 21.1

Subsidiaries of the Registrant

The following is a list of subsidiaries of the Registrant, Reis, Inc. with the respective state of organization as of December 31, 2017:

Subsidiary	State
Reis Services, LLC		Maryland

Pursuant to Item 601(b)(21) of Regulation S-K, we have omitted some subsidiaries that, considered in the aggregate as a single subsidiary, would not constitute a significant subsidiary as of December 31, 2017 under Rule 1-02(w) of Regulation S-X.