Announcements
03/05/2025
03/05/2025
Contact Lists
03/05/2025
03/05/2025
Announcements
03/04/2025
03/04/2025
Data Files
03/03/2025
03/03/2025
February 2025 Nixie Volume
This spreadsheet contains the UAA statistics for February 2025.
Data Files
03/03/2025
03/03/2025
Automated Zone Indicator (AZI) Table
The AZI table lists each five-digit ZIP Code™ and is an indicator of the type of processing that typically takes place on letter mail destined for each ZIP Code. Each number in the file is a ZIP Code appended with a numeric zone indicator. The five numeric indicators are as follows:
- Two Pass Zones: Automated two-step sector/segment at mail processing facilities
- 876 Carrier Route Sort Zones: Automated incoming secondary carrier route sorting at plants
- Carrier Route Barcode Sorter (CSBCS) Zones: Automated walk sequence sorting on CSBCS machines at delivery units
- Delivery Barcode Sorter (DBCS) Zones: Automated walk sequence sorting on DBCS machines at plants [i.e., sectional center facilities (SCFs)] or at delivery units
- Manual/Mechanized Zones: No automated sorting; no tracking code scans should be generated from facilities matched to these ZIP Codes
Announcements
03/01/2025
03/01/2025
Announcements
02/28/2025
02/28/2025
Publications
02/28/2025
02/28/2025
Announcements
02/27/2025
02/27/2025
Announcements
02/27/2025
02/27/2025