Shared identifiers across DOT records

How phone, address, email and officer-name matches are computed on one-way hashes, and what a match does and does not mean.

Phone and cell numbers are normalized to E.164, emails lower-cased (free webmail domains excluded from domain matching), street addresses to USPS abbreviations with unit numbers removed, officer names to sorted tokens. Each value is replaced by a one-way hash before it is stored; matches are computed between hashes. No phone, email or address value is kept or shown.

56,487 DOT records have identifiers on file; 2,845 (5.0%) share a phone or address with at least one other record (2026-10-25T17:58:34+00:00). A match counts the other records and how many carry an authority action or cancellation in 24 months. Shared values are common for legitimate reasons: registered agents, shared offices, one owner with several authorities.

Core pages

Trust Signal Score methodology Data sources and refresh cadence Double-brokering: what the public record can show Insurance cancellations (BMC-35) Authority revocations and suspensions New Broker of Property authorities Public Trust API Daily change alerts Roster watchlist Community flags Not a consumer reporting agency

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Data reflects official public records published by the U.S. Department of Transportation (FMCSA) as of Oct 25, 2026 11:58 MDT. CarrierDaily provides factual public-record change monitoring and is not a consumer reporting agency under the FCRA.