Assistance Listing Number

Summary

Program identifier from the U.S. federal assistance listings (formerly the CFDA number). Ties an opportunity to its funding program.

Code

opp:us:aln

Applies to

Opportunity

Kind

government

Status

Base identifier

Issuer

US General Services Administration (SAM.gov)

Code structure

The registry code is a three-part <schema>:<scope>:<prop>string that doubles as the map key in an identifier collection.

Schema

opp

Scope

us

Property

aln

Identifier format

Pattern^\d{2}\.[0-9A-Z]{3}[A-Z]?$

Example93.575

Presentation & validation

• Two-digit numeric agency prefix, then a three-character program code. Historically numeric (93.575); new listings may use alphanumeric codes as of March 2026 (e.g. 31.A1A). Some programs append a single uppercase subprogram letter (e.g. 84.063P).

Lookup & source

Source: https://sam.gov/content/assistance-listings

Back to Catalog