Federal Opportunity Number

Summary

Agency-assigned funding opportunity number that appears on the published notice of funding opportunity. Format varies by agency.

Code

opp:us:fon

Applies to

Opportunity

Kind

government

Status

Base identifier

Issuer

US federal awarding agencies

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

fon

Identifier format

This identifier has no fixed pattern; its format varies by issuer.

ExampleHHS-2026-ACF-OCC-YD-0001

Lookup & source

Source: https://www.grants.gov

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