Implementation of the NPA 844 for Toll-Free Services
Primary documents
| Letter | Published | Subject |
|---|---|---|
| PL-443 | 2012-12-07 | Implementation of the NPA 844 for Toll-Free Services |
All documents are official NANPA planning letters (Tier A sources). This page consolidates every letter we have on record for this event; it is updated automatically when new letters are detected, with sensitive changes held for editorial review first.