Technical Specifications
01/27/2026
NCOA API Specifications
Data Files
01/27/2026
Updated List: Service Type Codes for Intelligent Mail® Package Barcode (IMpb)

This document provides the updated service type codes for  Intelligent Mail® Package Barcodes.

Announcements
01/26/2026
INFORMATIONAL - Update: Priority Mail Express (PME) Service Guarantee Suspension Extended During Winter Weather Impacts
Announcements
01/26/2026
INFORMATIONAL - Updating Winter Storm Fern Continuing Extension Embargo for Lives
Announcements
01/26/2026
INFORMATIONAL - Winter Storm Fern – Operations Weather Conditions Update
Announcements
01/26/2026
DELIVERY - Norfolk Post Office (06058) Temporarily Closed
Announcements
01/26/2026
INFORMATIONAL - Mailing Promotions Portal to be renamed Effective January 30, 2026
Data Files
01/26/2026
***Updated - New Areas*** - Area District 5-digit ZIP Codes (AREADIST_ZIP5.TXT)
Data Files
01/26/2026
City/State ZIP Code Weekly Compare
Data Files
01/26/2026
3 Digit ZIP/AISU Office List (AISUREPT.TXT)