Assignment of NPA 633 for Non-Geographic Services (Canada)
Primary documents
| Letter | Published | Subject |
|---|---|---|
| PL-611 | 2023-04-10 | Assignment of NPA 633 for Non-Geographic Services (Canada) |
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.