Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Development Tracker

This document provides a list of active IV-MTR work to be as well as items completed in the current fiscal year.

*Please note, Postal Pro is the only source for a current IV-MTR Development log as updates will be made on an ongoing basis.

PTR Domestic Scan Events and Descriptions

Cumulative Listing of ZIP Codes Covered by the LACS Database

This document provides a cumulative listing of ZIP Codes covered by the LACS database for LACS^Link®.

Informed Visibility Mail Tracking & Reporting Machine Count

List of US Postal Service machines by site, including a description of each machine.

Undeliverable-as-Addressed (UAA) Statistics by Mailing Industry Quarterly Report (Q4 FY26)

ACS Nixie stats by industry for FY26 Q4.

September 2026 Nixie Volume

This spreadsheet contains the UAA statistics for September 2026.

ZIP Codes by Area and District codes

The Excel spreadsheet lists ZIP Codes with the associated Area and District Codes.  

USPS Ship Data Dictionary

Detailed information on the USPS Ship (Formerly Package Platform) data elements available through the Informed Visibility Mail Tracking & Reporting (IV-MTR) application. Please note that items in bold text were updated or added recently.

2027 Labeling List and Mail Direction File Schedule

This is the Labeling Lists production schedule for 2027.

ZIP Code Boundaries GeoJSON Sample File