Unified Corporate Entity & Classification Registry
Instant, client-side reference lookup for NAICS classification, legacy SIC crosswalks, SBA size standards, and IRS PBA codes. Free and authoritative.
Corporate Compliance Directories & Reference Tools
Direct crawl pathways to our core classification code engines, historical mapping databases, and compliance resources.
NAICS Code Directory
Complete 2022 North American Industry Classification System with full definition index.
SIC Code Directory
Legacy 1987 Standard Industrial Classification manual for historical risk filing systems.
SIC ↔ NAICS Crosswalk
Transitive mapping tools bridging old industrial classifications to 2022 standards.
Compliance Guides
Detailed tutorials on SBA size metrics, receipts calculations, and registration IDs.
Compliance Glossary
Official terminology definitions and citations for corporate registrars and legal officers.
Featured Compliance Resources
SBA Size Standards Guide
Master the legal rules of the Small Business Administration set-aside qualifications.
Calculating Annual Receipts
Step-by-step math for receipts-based standards averaging over five fiscal years.
DUNS to Unique Entity ID Transition
Understanding the GSA transition from proprietary D&B markers to GSA UEI.
Authoritative Data. Simplified.
Designed for compliance teams, contractors, and corporate research. Get consolidated classifications in one screen.
SBA Size Standards
Verify small business eligibility status instantly with standard-matched receipt limits and employee bounds.
Verify size criteria →Transitive Crosswalks
Trace 1987 SIC codes through the full historical NAICS concordance chain (1997 → 2022) with 100% path provenance.
Test crosswalks →Identity Validators
Format check LEIs, UEIs, CAGE codes, and DUNS. Offline ISO checksum routines with optional live GLEIF lookups.
Open validators →Interactive NAICS Decoder
Visualize the structural hierarchy of any 6-digit NAICS code. Break down classification sectors, subsectors, and groups.