Data Files
05/26/2026
Area District Finance File (AREADIST.TXT)
Data Files
05/26/2026
Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)
Data Files
05/26/2026
Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Announcements
05/23/2026
PROCESSING & DISTRIBUTION: Tampa, FL Regional Processing & Distribution Center (RPDC) Modernizes Operations on May 25, 2026
Announcements
05/22/2026
INFORMATIONAL - Commercial System Releases (May 30 – June 5) May 31, 2026
Release Notes
05/21/2026
PTR2 Release Notes_DD_05_21_26
Technical Specifications
05/21/2026
PTR Tracking API Specifications and Integration
Contact Lists
05/21/2026
CASS™ Certified Products Guide: Residential Delivery Indicator Cycle O - (Expires July 31, 2028)
Contact Lists
05/21/2026
RDI™ Cycle O: Certified Products Guide (D) - (Expires July 31, 2028)

This document outlines the CASS/MASS certified vendors list for RDI™ Cycle O.

Contact Lists
05/21/2026
CASS™ Certified Products Guide: M L O C R Mailers/Users Data File Cycle O - (Expires July 31, 2028)