NPA 737 to Overlay NPA 512 (Texas)
Primary documents
| Letter | Published | Subject |
|---|---|---|
| PL-438 | 2012-08-01 | NPA 737 to Overlay NPA 512 (Texas) |
| PL-233 | 2000-07-05 | NPA 737 to Overlay NPA 512 (Texas) |
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.