New NPA 947 to Overlay NPA 248 (Michigan)
Primary documents
| Letter | Published | Subject |
|---|---|---|
| PL-283 | 2001-06-07 | New NPA 947 to Overlay NPA 248 (Michigan) |
| PL-209 | 2000-02-01 | NPA 947 to Overlay NPA 248 / NPA 679 to Overlay NPA 313 / NPA 278 to Overlay NPA 734 (Michigan) |
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.