count(DISTINCT to_address)

FROM optimism.core.fact_token_transfers

WHERE from_address in ('0xfcc293db3b7396a1c2477c9f24f5f948431ef6ec', '0x549406bc1370a7efe86e2ae71dea3b67fa08b43d','0xc37e1fb3d127d6194fc2f5fe18ec871c7366df63')

AND contract_address = '0x4200000000000000000000000000000000000042'