NPA 223 to Overlay NPA 717 (Pennsylvania)
Primary documents
| Letter | Published | Subject |
|---|---|---|
| PL-501 | 2017-01-23 | NPA 223 to Overlay NPA 717 (Pennsylvania) |
| PL-500 | 2016-12-28 | NPA 223 to Overlay NPA 717 (Pennsylvania) |
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.