About & Methodology
EntityCodes.org is an independent compliance reference registry providing quick, unified access to business identifiers, classification standards, and concordance maps.
Who Maintains This Registry
EntityCodes.org is compiled, validated, and maintained by the EntityCodes Editorial Team, an engineering and compliance research group within Tech Labs FZ LLC (United Arab Emirates).
Our editorial remit focuses on building static, deterministic, and instant reference tools for federal contractors, corporate attorneys, enterprise accountants, and financial KYC analysts. Every classification mapping, SBA size standard, and format validator on this registry is built directly from official public domain government registers — with zero data hallucination.
Data Provenance & Authoritative Sources
Primary classification and sizing data published on this registry is compiled from public domain sources and official agency releases. We maintain direct traceability to official source registers:
- U.S. Census Bureau: 2022 North American Industry Classification System (NAICS) manuals, structure files, and official concordance tables (1997 through 2022).
- U.S. Small Business Administration (SBA): Table of Small Business Size Standards (13 CFR § 121.201), incorporating all recent inflation adjustments.
- U.S. Occupational Safety and Health Administration (OSHA): 1987 Standard Industrial Classification (SIC) manual.
- Global Legal Entity Identifier Foundation (GLEIF): ISO 17442 Legal Entity Identifier (LEI) structure records and check digit algorithms.
- Internal Revenue Service (IRS): Principal Business Activity (PBA) codes compiled from IRS Instructions for Form 1120/1040 Schedule C.
For complete audit details, publisher licenses, and official register URLs, visit our dedicated Data Sources & Provenance Registry.
Methodology: Transitive Concordance Mapping
Because the legacy 1987 SIC system and the modern 2022 NAICS system represent business activities under different conceptual schemas, no single direct census mapping exists between them.
To solve this, EntityCodes.org utilizes a transitive concordance mapping model. We chain the complete historical sequence of U.S. Census concordance files:
Each concordant transition tracks its path provenance (e.g., whether the relationship is direct, partial, or split) and reports all unmapped codes to ensure complete transparency in data flow. Read our full Editorial Policy for mapping verification rules.
Registry Updates & Cadence
The registry is updated on a regular cadence to align with the federal registers:
- NAICS updates: Re-compiled every five years following the U.S. Census Bureau publication schedule (next revision scheduled for 2027).
- SBA Size Standard updates: Monitored monthly and updated immediately upon the publication of DLA/SBA rules in the Federal Register.
- Validator schema checks: Validated offline against active ISO 7064 check digit algorithms and SAM.gov Base32 specifications.
Legal Disclaimer & Operator
EntityCodes.org is an independent B2B reference directory operated by Tech Labs FZ LLC (United Arab Emirates). We are NOT affiliated with, authorized, or endorsed by any government agency (including the U.S. Census Bureau, Small Business Administration, Internal Revenue Service, or GLEIF). All data is aggregated from public-domain records for reference purposes only.
Compliance Contact
For questions regarding data provenance, error corrections, or data licensing details, please contact:
Legal Entity: Tech Labs FZ LLC
Email: [email protected]
Contact Form: Official Support Channel