The data that answers it

Ranked by fit · best first
Companies House Primary fit
Companies House Public Data API

For a buyer-selected UK company, the standing Public Data API profile returns current company name and repeated previous names with effective-from and ceased-on dates.

Free API National GB 56 fields
Global Legal Entity Identifier Founda… Strong fit
GLEIF API

For a selected or searched LEI, the open API returns legal, typed other, and transliterated names with record metadata and documented paths.

Free API Global 29 fields
Global Legal Entity Identifier Founda… Strong fit
GLEIF Golden Copy and Delta Files

The standing CC0 full and delta files publish legal, typed other, and transliterated names with LEI-CDF record and publication vintage.

Free Full file Global 28 fields
Federal Motor Carrier Safety Administ… Strong fit
MCMIS Company Census File

The daily public API and full file return legal and DBA names for USDOT-resolved organisations with retrieval vintage. This supports current names only, not exhaustive historical aliases.

Free APIFull file National US 27 fields
U.S. General Services Administration Strong fit
SAM.gov Entity Management API

For an arbitrary SAM entity selected or resolved by UEI, CAGE, legal name, or DBA name, the public registration response returns UEI/CAGE plus legalBusinessName and dbaName, with registration/update/expiration context and API-version or retrieval pinning. This supports current legal and trading names only; it does not claim previous, alternative-language, or transliterated names.

Free APIFull file Unknown 1 field
Florida Department of State, Division… Strong fit
Sunbiz Business Entity Index and Data Downloads

Florida's reusable Corporate Data and Corporate Event files supply corporation name, name-change indicators, event name sequences, filing and effective dates, and stable entity identifiers for covered entities.

Free Full file Subnational 15 fields
California Secretary of State Supporting fit
bizfile Business Search

The free standing lookup returns the official current entity name, entity number, jurisdiction, status, and retrieval context for a buyer-selected California entity. It supports the current legal-name slice only, not historical or trading aliases.

Free Subnational 10 fields
Federal Motor Carrier Safety Administ… Supporting fit
SAFER Company Snapshot

The free buyer-selected Snapshot returns current legal and DBA names for a selected carrier match. It does not provide name history.

Free National US 35 fields

Related questions

Under Organisation identity validity

Need Organisation recorded names and aliases answered at scale?

We will test these sources on your own records, show you match and fill rates, then handle the contract, security review, and delivery into your stack.