{"carrier":{"dot_number":"3121809","legal_name":"MILEIDYS FERNANDEZ SIERRA","dba_name":"CUBA ISLA TRANSPORTE DE CARGA","entity_type":"AUTHORIZED FOR HIRE","operating_status":"AUTHORIZED FOR HIRE","phy_street":"813 AVE Q","phy_city":"SUNRAY","phy_state":"TX","phy_zip":"79086","phy_country":"US","phone":"2109836269","mc_number":"MC-90227","mc_number_2":"","mc_number_3":"","carrier_operation":"C","hm_indicator":"N","power_units":1,"total_drivers":1,"total_cdl":1,"mcs150_mileage":26118,"mcs150_mileage_year":"2022","mcs150_date":"20230131 1506","add_date":"20180411","officer_1":"MILEIDYS FERNANDEZ-SIERRA","officer_2":"","fleet_size_class":"A","business_type":"","duns_number":"","crash_rate":0,"prior_revoke_flag":"","prior_revoke_dot":"","cargo_types":"C","source":"census","ingested_at":"2026-05-16 01:57:38","updated_at":"2026-05-16 01:57:38"},"crashes":{"total":0,"fatal":null,"injury":null},"safety_scores":[],"freightproof":{"dot_number":"3121809","record_status":"no_vetting_yet","what_this_proves":"FMCSA-sourced carrier data cached by FreightProof. No signed vetting record exists yet; run one to generate a tamper-evident proof-of-checking.","data_hash":null,"vetting_date":null,"verify":null,"run_full_vetting":{"endpoint":"https://freight.rootz.global/mcp","tool":"freight_carrier_vet","arguments":{"dot_number":"3121809"},"sealed_evidence_tool":"freight_create_evidence"},"ai_discovery":"https://freight.rootz.global/.well-known/ai","data_source":"FMCSA (Census, Crash, Inspection, Enforcement)","legal_basis":"Montgomery v. Caribe Transport II, LLC, 608 U.S. ___ (2026)"}}