NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2021-02-11 | 873-590 | not yet reported which blocks → | Fibernetics Corporation | 464D | Champlain | — |
| 2021-02-11 | 873-591 | not yet reported which blocks → | Fibernetics Corporation | 464D | Deschaillons | — |
| 2021-02-11 | 873-592 | not yet reported which blocks → | Fibernetics Corporation | 464D | Fortierville | — |
| 2021-02-11 | 873-593 | not yet reported which blocks → | Fibernetics Corporation | 464D | Louiseville | — |
| 2021-02-11 | 873-594 | not yet reported which blocks → | Fibernetics Corporation | 464D | Maskinonge | — |
| 2021-02-11 | 873-595 | not yet reported which blocks → | Fibernetics Corporation | 464D | Ste-Monique-de-Nicolet | — |
| 2021-02-11 | 873-596 | not yet reported which blocks → | Fibernetics Corporation | 464D | Ste-Sophie-de-Levrard | — |
| 2021-02-11 | 873-597 | not yet reported which blocks → | Fibernetics Corporation | 464D | St-Pierre-Les-Becquets | — |
| 2021-02-11 | 873-598 | not yet reported which blocks → | Fibernetics Corporation | 464D | Yamachiche | — |
| 2021-01-12 | 873-872 | not yet reported which blocks → | Fibernetics Corporation | 464D | Sherbrooke | — |
| 2020-11-17 | 873-674 | not yet reported which blocks → | Fibernetics Corporation | 464D | Perkins | — |
| 2020-11-17 | 873-675 | not yet reported which blocks → | Fibernetics Corporation | 464D | Quyon | — |
| 2020-11-17 | 873-676 | not yet reported which blocks → | Fibernetics Corporation | 464D | St-Pierre-de-Wakefield | — |
| 2020-11-16 | 873-671 | not yet reported which blocks → | Fibernetics Corporation | 464D | Chelsea | — |
| 2020-11-16 | 873-672 | not yet reported which blocks → | Fibernetics Corporation | 464D | Maniwaki | — |
| 2020-11-11 | 873-318 | not yet reported which blocks → | Fibernetics Corporation | 464D | St-Guillaume | — |
| 2020-11-11 | 873-319 | not yet reported which blocks → | Fibernetics Corporation | 464D | Wickham | — |
| 2020-11-10 | 873-316 | not yet reported which blocks → | Fibernetics Corporation | 464D | L'Avenir | — |
| 2020-11-10 | 873-317 | not yet reported which blocks → | Fibernetics Corporation | 464D | St-Germain-de-Grantham | — |
| 2020-06-25 | 873-874 | not yet reported which blocks → | Fibernetics Corporation | 464D | Aylmer | — |
| 2020-06-25 | 873-875 | not yet reported which blocks → | Fibernetics Corporation | 464D | Buckingham | — |
| 2016-12-28 | 873-673 | not yet reported which blocks → | Fibernetics Corporation | 464D | Gatineau | — |
| 2015-09-25 | 873-886 | not yet reported which blocks → | Fibernetics Corporation | 464D | Drummondville | — |
| 2014-02-25 | 873-890 | not yet reported which blocks → | Fibernetics Corporation | 464D | St-Felix-de-Kingsey | — |
| 2012-10-31 | 873-887 | not yet reported which blocks → | Fibernetics Corporation | 464D | Trois-Rivieres | — |
| 2012-10-15 | 873-888 | not yet reported which blocks → | Fibernetics Corporation | 464D | Sherbrooke | — |
| 2012-10-15 | 873-889 | not yet reported which blocks → | Fibernetics Corporation | 464D | Lac-Megantic | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.