For quite some time this has been difficult to find. NIST SP 800-171 and the CMMC require the use of FIPS validated cryptography when protecting the confidentiality of CUI. Using the Cryptographic Module Validation Program lookup database didn’t appear to return results when searching for Meraki, but Cisco has published FIPS compliance information for Meraki MS, MR, and MX devices here:

FIPS and Meraki Devices: