What a file from United States resolves to
The rows that are one company, the matches we would refuse, and the column that decides the rest.
The register, counted
97.76% in Colorado and 99.91% among SEC filers, measured separately on the same code path and never blended.
- Register
- Colorado Secretary of State for state-level company registrations, and SEC EDGAR for federal filers. There is no national company register in the United States, and this is not one.
- Universe counted
- 2,191,009 extant legal persons on the Colorado register, plus 6,471 tickered filers with complete rows on SEC EDGAR. The two are reported separately and never added together — one is a register of incorporation and the other a register of filers.
Licence Public domain on both sides: the Colorado bulk product carries no reuse restriction, and SEC EDGAR is a United States federal government work under 17 U.S.C. §105.
check a company on the register yourself →how this figure and every other one was measured →cite it: the five-register census, with a CSV →
A file of bare names cannot beat that census, whatever engine reads it. One sample tells you what your own columns do against it.
Start freeAt parity in part, with the failing factor named. 4 things it gets right, 5 named gaps. Every figure comes from a fixture we built ourselves, and the method is on /accuracy.
every source and its licence →On this page
What works
One line per shape of file, each with the count it was measured over. Send the columns named here and this is what comes back.
- A registration number that names its state: a Colorado entity id qualified as US-CO binds deterministically, 3,000 of 3,000 on the wide fixture. A bare "US" qualifier decides nothing and is refused — fifty registers share no number space, so the number alone cannot name a company.
- SEC filers reached by CIK or by ticker and exchange, with the filer's former names and the date brackets they applied between, the state of incorporation, EIN and the switchboard — measured at 100% fill on all of those over 40 large filers, with former names at 57%.
- As-filed revenue, total assets, employee counts and fiscal year end from EDGAR's XBRL company facts, each citable to the accession it was filed in and each carrying its own period — the one jurisdiction on this list where filed revenue is actually available at scale.
- Retrieval and safety at the UK's own level in Colorado: wrong-town retrieval 3,000 of 3,000, truncated retrieval above the GB baseline, and zero false binds across every case in the run.
Those counts come off our own fixture. The one that decides your project is the same measurement run on your rows.
Start freeWhat it will not do
A limit found in week three of an integration costs more than a limit read here.
- 01
Forty-nine states are not covered. Colorado is one register of fifty, and nothing here enumerates another state's number shapes, so a registration number from any other state is treated as country-scoped and decides nothing on its own.
- 02
Delaware is unsolvable rather than merely unbuilt. There is no bulk product and no API at any price, and no amount of engineering changes that.
- 03
No United States quality claim covering SEC filers. The five-register parity variant fails on one factor, the name-and-postcode tier at 1,942 of 2,000.
- 04
No live-adjudicated recording for either American register. Both figures come from the spend-free instrument, so the name tiers here are predictions from the register census rather than measurements.
- 05
EDGAR publishes no registered office and no ownership. The mailing address is SEC correspondence and is never presented as a registered address, and nothing in this deployment builds on EDGAR's own LEI field, which was measured present on 2% of the sample.
Internal fixtures only. The historical 2026-08-29 per-tier recording covers 317 GB companies with identifier-rich arrivals seeding the catalogue first; the context tier includes country and registered-town prose. Its legacy replay has no full-prompt-verified calls and cannot certify current calibration. The September 5 CI reports cover 1,176 labelled pairs and 705 records over 250 companies using offline stubs. These are not independent customer holdouts or live production validation; the 99% minimum-input product target remains unmet. Scope is company and organisation identity only — not people, vessels, bank-account ownership, sanctions or emissions. Results may not be used for eligibility decisions about individuals, including employment, credit and tenancy.
If one of those gaps decides your project, contact us before integrating. You can create your Free workspace online to inspect your own rows; an assisted first file can compare them with your incumbent’s matches and name the ones we would not have made.
Start freeUnited States, in detail
Registers differ more than engines do. These are the properties of this one that change what your file gets back.
United States coverage here is one state register plus the federal filers. It is not national, and that is the first thing to know before you send an American file. Company registration in the United States is a state function: fifty Secretaries of State run fifty registers that share no number space, so a registration number qualified only by "US" is refused as non-decisive rather than guessed at. Colorado is the state that was measured, chosen for a reason that has nothing to do with its economy — its Secretary of State publishes the entire register as public-domain bulk data. Delaware, where a very large share of American companies are incorporated, publishes no bulk product and no API at any price, because selling the data is part of the state's business model. Every United States coverage claim on this site is scoped to those two registers.
The Colorado universe rule is published because the first cut of it was wrong. The register was read as "live" meaning "compliant", which excluded 1.13 million extant entities in Delinquent status — entities that retain legal existence and cure by filing, the American analogue of a British company under proposal to strike off. An adversarial review caught it and the rule was corrected to extant rather than compliant. 2,191,009 extant legal persons is the corrected universe, and every Colorado figure on this site is measured on it.
EDGAR is the other half and it is a different kind of register. It records filers rather than incorporations, so it publishes no registered office at all — the address on a filing is SEC correspondence, frequently a registered agent or a post box, and it is held in its own field and never written as a registered office. It is also small and unusually clean: 6,471 tickered filers with complete rows measured 99.91% unique on name, the highest of the five registers counted anywhere in this evidence base. Reported beside the combined figure and never blended into it: closed-end fund families at one address measure lower on the digital tier, which is a register-shape finding rather than an engine one.
The parity result is therefore split, and the two halves are reported apart rather than averaged together. Colorado met the parity contract at 0.999955 combined across the three regions measured — United Kingdom, United States (Colorado) and EMEA (France and Norway). — against a 0.9565 bar. Adding SEC filers to that calculation drops the combined figure to 0.0082, failing on exactly one factor: the name-and-postcode tier at 1,942 of 2,000 against the UK baseline's 2,998 of 3,000. The 58 abstentions are closed-end fund families — one fund and its numbered successor at a single address — whose near-identical names escalate to an adjudication stage the spend-free instrument declines to pay for. Zero false binds anywhere in the run. That is a finding about the shape of EDGAR's tickered universe rather than an engine defect, and it is why no quality claim is made about SEC filers until the priced recording leg runs.
where the census comes from
- Colorado Secretary of State
Chosen because it publishes the whole register as public-domain bulk data, not for the size of its economy. One state register of fifty; Delaware publishes nothing at any price.
- SEC EDGAR company search
A register of filers, not of incorporation. It is reported beside the Colorado figure and never added to it.
The identifier columns a United States file arrives carrying
Most decisive first. Whether an agreeing value settles a pair on its own, or only narrows the field, is answered on the identifier's own page — along with what goes wrong with the column in a real file.
- IdentifierCIKThe SEC assigns a CIK to every EDGAR filer, so a parent and its financing subsidiary hold two. It retrieves candidates here and decides no pair on its own.
- IdentifierTickerA ticker names one listing on one venue, so a multi-listed company has several. Agreement on ticker and venue is a shortcut; disagreement counts for nothing.
- IdentifierCompany numberA company number names a registration, not a company: 220 of 232 jurisdictions run more than one register, so it decides only once the register is named.
The other registers we have measured
Four jurisdictions, each measured one register at a time. A map shaded in by region would say more and mean less: an adapter with no fixture behind it has no measured quality, and none is quoted for it.
United Kingdom
5 named gapsBaseline register, live-adjudicated
France
5 named gapsAt parity, measured without model spend
Norway
4 named gapsAt parity, measured without model spend
If your file spans more than one of these registers, one sample tells you more than four pages will.
Start freeStart with a file from United States.
A Sprint runs over the public API on a copy of your file and writes nothing to your CRM, ERP, MDM or warehouse. The audit pack: twelve files, a receipt per decision, and a report that opens offline.
300 credits. No card.
For a guided review of your file, explore the Merge Safety Sprint →
Questions about United States
Do you cover the whole United States?
No. There is no national company register in the United States: registration is a state function, and fifty registers share no number space. What is covered is Colorado — 2,191,009 extant legal persons, published by its Secretary of State as public-domain bulk data — plus 6,471 tickered filers with complete rows on SEC EDGAR. Delaware publishes nothing at any price. If your file is American and identifier-rich, the identifier path works wherever the number names its state; if it is a file of names from forty-nine other states, you will get retrieval and a shortlist rather than a national register lookup, and the unresolved rows will say which column would have settled them.
Why Colorado?
Because its Secretary of State publishes the whole register as public-domain bulk data, which is a rarer property than it sounds and is what makes measurement possible at all. The state was chosen for its data licence rather than for its economy. The universe rule is published with it: extant entities rather than merely compliant ones, which means Good Standing, Exists, Delinquent, Noncompliant and Registered Agent Resigned all count, because a delinquent entity retains legal existence and cures by filing. A first cut of that rule excluded 1.13 million such entities and was corrected after an adversarial review.
Can you resolve US public companies?
Filers, yes, and with a caveat about which kind. EDGAR is live and supplies CIK, tickers and exchanges, EIN, state of incorporation, former names with their date brackets, and XBRL financials citable to the filing they came from. But EDGAR registers filers rather than incorporations — a group whose parent and financing subsidiary both file holds two CIKs and two names — and it publishes no registered office. One measured caution travels with that: the parity variant including SEC filers fails a single factor, the name-and-postcode tier at 1,942 of 2,000, on closed-end fund families sharing an address. Zero false binds, and no US-SEC quality claim until the priced recording leg runs.