690xx

690xx is a numeric designation used in various contexts to identify a range of items or locations. It does not correspond to a single entity but rather serves as a prefix or suffix in different systems, including postal codes, product catalogs, and versioning schemes.

In postal coding, particularly within the United States ZIP code framework, a three-digit prefix such as 690 designates a broad geographic area. The full five-digit ZIP codes starting with 690 may be used by multiple towns or facilities within that region; the final two digits specify the exact post office or delivery area. The specific mapping evolves over time as postal authorities adjust allocations.

In manufacturing and retail, 690xx appears as a common prefix in product numbers. Companies may assign 690xx to a family of related items, with the two-digit suffix (or more) distinguishing models, configurations, or variants. This usage helps organize inventory, catalogs, and service parts.

In software, data indexing, and archival systems, 690xx can occur in build identifiers, release tags, or internal reference codes. Such numbers help track iterations, batches, or component groups without conveying intrinsic meaning about the item itself.

Because 690xx is not tied to a single domain, its interpretation depends on context. Users encountering the code should look for accompanying information—such as the field, country, or system—to determine the precise entity or meaning behind the designation.