Release Notes
10/22/2025
October 30 2025 Release Notes
Announcements
10/20/2025
DELIVERY - WestPac Area - AZ-NM District San Carlos Post Office (85550) - Resumed
Technical Specifications
10/20/2025
Mail.xml Technical Specifications R63.0.0.0
Technical Specifications
10/20/2025
Mail.dat Technical Specifications R63.0.0.0
FAQs
10/20/2025
USPS PTR2 API Known Issues
Release Notes
10/20/2025
January 2026 Release Overview
Data Files
10/20/2025
***Updated - New Areas*** - Area District 5-digit ZIP Codes (AREADIST_ZIP5.TXT)
Data Files
10/20/2025
City/State ZIP Code Weekly Compare
Data Files
10/20/2025
3 Digit ZIP/AISU Office List (AISUREPT.TXT)
Data Files
10/20/2025
AIS Congressional District File (CONG_DIST.TXT)