NANP-Split of 318 Numbering Plan Area (NPA) in Louisiana; introduction of NPA 337
Primary documents
| Letter | Published | Subject |
|---|---|---|
| PL-188 | 1999-08-25 | NANP-Split of 318 Numbering Plan Area (NPA) in Louisiana; introduction of NPA 337 |
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.