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Company Lookup & KYB: Secretary of State Business Entity Search

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Bulk US company lookup and KYB verification: business entity search in official Secretary of State and state registry data (CO, CT, NY, OR, PA, TX). Tested Oct 17, 2026: 17/17 matched to the right entity, explicit NOT_FOUND for every unregistered name. Match score, status, formation date, ID.

Pricing

from $2.40 / 1,000 company lookup with a matches

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0.0

(0)

Developer

Christopher Tolentino

Actor stats

Bookmarked

Total users

Monthly active users

3 days ago

Last modified

Categories

Lead generation

Business

Developer tools

Company names

companies

Required

Company names to verify, one per line (batch: up to 'Max lookups' per run). Legal-form words (LLC, Inc., Corp., L.P.), punctuation, '&' vs 'and' and word order are ignored when matching, and small typos are tolerated. To search specific states for one name only, add ' | ' and two-letter codes, e.g. 'Acme Robotics | CO' or 'Acme Robotics | CO, TX'. Without a suffix the name is searched in every state selected under 'States'. Each name returns exactly one result row, including NOT_FOUND rows.

Type:string[]

State entity IDs (optional)

entityIds

Optional

State-assigned registry IDs to verify, one per line, as 'STATE:ID', e.g. 'TX:0015370710' (Texas SOS file number), 'CO:19931026399', 'NY:3368051', 'OR:6599310', 'CT:0123456', 'PA:0000326968'. An ID without a state prefix is tried in every selected state. Leading zeros are optional.

Type:string[]

States

states

Optional

Two-letter codes of the state registries to search when a name has no ' | STATE' suffix. Supported: CO, CT, NY, OR, PA, TX. Empty = all six. Searching fewer states is faster. NY, OR, PA and TX publish active entities only, so a dissolved company there returns NOT_FOUND.

Type:string[]

Default:

[
  "CO",
  "CT",
  "NY",
  "OR",
  "PA",
  "TX"
]

Minimum match score

minScore

Optional

0-100 name similarity needed to count as a match, computed after removing legal-form words and punctuation. 100 = same name (EXACT); 93-99 = STRONG (same words but different spacing, word order or legal form, e.g. Inc vs LP); 85-92 = POSSIBLE (spelling differences or typos, or one name is the other plus extra words). Spelling differences are never better than POSSIBLE, because a one-letter change can be a different company. Below this the row is NOT_FOUND and the closest names are listed in other_matches. Raise to 93 for strict verification (EXACT/STRONG only), lower to 75 for messy lists.

Type:integer

Minimum:50

Maximum:100

Default:85

Other matches per company

maxOtherMatches

Optional

How many additional candidates to list in other_matches (e.g. foreign registrations of the same company in other states, or similarly named entities). 0 = best match only.

Type:integer

Minimum:0

Maximum:25

Default:5

Active entities only

activeOnly

Optional

Ignore entities whose status is dissolved, withdrawn, revoked, merged, forfeited etc. (status_normalized = INACTIVE). Off by default so a KYB check can see that a company exists but is dissolved (Colorado and Connecticut publish all statuses).

Type:boolean

Default:false

Max lookups

maxLookups

Optional

Safety cap on the number of input names plus IDs processed in one run; extra inputs are skipped and counted in RUN_SUMMARY. Each lookup takes roughly 1-3 seconds per state searched because state portals allow one request per second.

Type:integer

Minimum:1

Maximum:10000

Default:1000

Include street line

includeStreetAddress

Optional

Also return the principal office street line as filed (CO, CT, OR, PA, and NY when a location is filed). Off by default: you get city/state/ZIP only, because small businesses often file a home address. Texas never returns a street line.

Type:boolean

Default:false

Socrata app token (optional)

socrataAppToken

Optional

Optional free app token from the state open-data portals (Socrata/Tyler Data & Insights). Not needed; it only reduces the chance of throttling on very large batches.

Type:string

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