Connecticut (US)

Data Sources
Company Identifiers
Search Capabilities
Data Availability
Quirks & Gotchas
Example API Responses

Data Sources

Connecticut is served from two independent channels published by the Connecticut Secretary of the State.

Open data, refreshed nightly. Covers every domestic and foreign entity registered with the state: stock and non-stock corporations, limited liability companies, limited partnerships, limited liability partnerships, statutory trusts, and chartered variants. Includes the entity record, principals (officers, directors, members, managers, partners), statutory registered agent, filing history, and previous names. Drives the onboarding profile and the search index.
Public business records search at service.ct.gov/business. The authoritative live face of the register. Drives the verification profile and the Trade Register Extract.

The two channels are wired into two independent profile blocks. Topograph does not merge attributes across them.

Company Identifiers

The primary identifier is the seven-digit account number assigned by the Connecticut Secretary of the State. It is exposed in two forms — the bare number, and that same number carrying its register prefix, the Administrative Legal Entity Identifier (ALEI):

Composite form: US-CT.BER:0668349 (the form shown on the Business Records Search portal and printed on certificates, returned as identifiers.alei).
Bare form: 0668349 (the seven-digit account number, returned as company.id).

Both forms resolve to the same entity. The API accepts either as the id parameter and as the search query.

Search Capabilities

Search by name and search by account number are both supported; the composite ALEI is accepted as a search query too. Previous names recorded against the entity are indexed so legacy names continue to match.

Data Availability

Datapoint	Onboarding	Verification
`company`	✅	✅ (no legal form, no NAICS)
`legalRepresentatives`	✅	✅ (top 3 principals)
`otherKeyPersons` (agent)	✅	✅
`activityCodes` (NAICS)	✅	❌ (onboarding only)
`tradeRegisterExtract`	✅	✅
`shareholders`	❌	❌
`ultimateBeneficialOwners`	❌	❌
Certified documents	❌	❌

The two modes return slightly different field sets. The onboarding profile is the richer of the two: it includes the legal form, NAICS classification, and the full principal list from the nightly open data. The verification profile is read live from the public business records search and returns the name, status, principal address, top three principals, and the statutory registered agent. Use the onboarding mode when you need the richer field set and can tolerate up to a day of staleness; use verification when you need the authoritative live state of the register. The Trade Register Extract is a printable PDF of the live entity card, bundled with the company-data block at no extra charge. Shareholder lists are not collected by the Connecticut Secretary of the State for any entity type. Connecticut maintains no state-level beneficial-ownership register.

Quirks & Gotchas

One identifier, two public forms

The composite US-CT.BER:0668349 and the bare 0668349 are accepted interchangeably by the API. Topograph normalises both forms and returns the bare account number as company.id; the composite is always available under identifiers.alei.

Status vocabulary

Twenty distinct status values appear across the register. Only Active indicates an entity in good standing. Every other label (Forfeited, Dissolved, Withdrawn, Revoked, Cancelled, Merged, and others) marks an entity that is no longer transacting business in Connecticut.

Connecticut publishes principals, including LLC members

Unlike many US states that hide LLC membership, Connecticut publishes officers, directors, members, managers, and partners for every entity type. Where a principal holds more than one role, Topograph emits a separate legalRepresentatives record per role.

NAICS classification is included

Each entity carries an NAICS classification on the formation survey. Both the six-digit code and the descriptive label are returned under company.activities.NAICS.

Example API Responses

topo api profile US-CT US-CT.BER:0668349

{
  "company": {
    "id": "0668349",
    "countryCode": "US-CT",
    "legalName": "AETNA INC.",
    "identifiers": {
      "alei": "US-CT.BER:0668349",
      "accountNumber": "0668349"
    },
    "legalForm": {
      "localName": "Stock Corporation",
      "englishTranslation": "Stock Corporation",
      "standardized": "Corporation"
    },
    "status": { "localName": "Active", "active": true },
    "legalAddress": {
      "addressLine1": "151 Farmington Avenue",
      "city": "Hartford",
      "region": "CT",
      "postalCode": "06156",
      "countryCode": "US"
    },
    "registrationDate": "2000-12-13",
    "activities": {
      "NAICS": [
        {
          "code": "551112",
          "description": "Offices of Other Holding Companies"
        }
      ]
    }
  }
}

Europe

North America

Asia

Offshore Centers

Table of Contents

Data Sources

Company Identifiers

Search Capabilities

Data Availability

Quirks & Gotchas

One identifier, two public forms

Status vocabulary

Connecticut publishes principals, including LLC members

NAICS classification is included

Example API Responses

​Table of Contents

​Data Sources

​Company Identifiers

​Search Capabilities

​Data Availability

​Quirks & Gotchas

​One identifier, two public forms

​Status vocabulary

​Connecticut publishes principals, including LLC members

​NAICS classification is included

​Example API Responses

Table of Contents

Data Sources

Company Identifiers

Search Capabilities

Data Availability

Quirks & Gotchas

One identifier, two public forms

Status vocabulary

Connecticut publishes principals, including LLC members

NAICS classification is included

Example API Responses