NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
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.
Most active assignees, all time — NPA 289
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2008-06-03 | 289-389 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Hamilton | — |
| 2008-06-02 | 289-880 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2008-05-22 | 289-340 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Newmarket | — |
| 2008-05-22 | 289-342 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Maple | — |
| 2008-05-22 | 289-746 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Gormley | — |
| 2008-05-12 | 289-844 | not yet reported which blocks → | Primus Telecommunications Canada Inc. | 201A | Unionville | — |
| 2008-05-12 | 289-845 | not yet reported which blocks → | Primus Telecommunications Canada Inc. | 201A | Woodbridge | — |
| 2008-05-12 | 289-846 | not yet reported which blocks → | Primus Telecommunications Canada Inc. | 201A | Markham | — |
| 2008-05-12 | 289-847 | not yet reported which blocks → | Primus Telecommunications Canada Inc. | 201A | Port Credit | — |
| 2008-05-12 | 289-848 | not yet reported which blocks → | Primus Telecommunications Canada Inc. | 201A | Streetsville | — |
| 2008-05-12 | 289-849 | not yet reported which blocks → | Primus Telecommunications Canada Inc. | 201A | Clarkson | — |
| 2008-05-08 | 289-449 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Welland | — |
| 2008-05-08 | 289-450 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Ancaster | — |
| 2008-05-08 | 289-840 | not yet reported which blocks → | Primus Telecommunications Canada Inc. | 201A | Aurora | — |
| 2008-05-08 | 289-841 | not yet reported which blocks → | Primus Telecommunications Canada Inc. | 201A | Newmarket | — |
| 2008-05-08 | 289-842 | not yet reported which blocks → | Primus Telecommunications Canada Inc. | 201A | Richmond Hill | — |
| 2008-05-08 | 289-843 | not yet reported which blocks → | Primus Telecommunications Canada Inc. | 201A | Thornhill | — |
| 2008-04-08 | 289-686 | not yet reported which blocks → | TELUS Mobility | 8303 | St. Catharines-Thorold | — |
| 2008-03-31 | 289-837 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Oakville | — |
| 2008-03-10 | 289-234 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Oak Ridges | — |
| 2008-02-26 | 289-679 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Freelton | — |
| 2008-02-20 | 289-765 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Stoney Creek | — |
| 2008-01-03 | 289-339 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Hamilton | — |
| 2007-12-20 | 289-376 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Port Robinson | — |
| 2007-12-20 | 289-397 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Stevensville | — |
| 2007-12-20 | 289-567 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Vineland | — |
| 2007-12-20 | 289-656 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Winona | — |
| 2007-12-20 | 289-676 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Oshawa | — |
| 2007-12-20 | 289-956 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | West Lincoln | — |
| 2007-12-19 | 289-812 | not yet reported which blocks → | Iristel Inc. | 154E | Burlington | — |
| 2007-12-19 | 289-813 | not yet reported which blocks → | Iristel Inc. | 154E | Oakville | — |
| 2007-12-19 | 289-814 | not yet reported which blocks → | Iristel Inc. | 154E | Streetsville | — |
| 2007-11-30 | 289-575 | not yet reported which blocks → | Fibernetics Corporation | 464D | Keswick | — |
| 2007-11-27 | 289-570 | not yet reported which blocks → | Fibernetics Corporation | 464D | Richmond Hill | — |
| 2007-11-27 | 289-571 | not yet reported which blocks → | Fibernetics Corporation | 464D | Aurora | — |
| 2007-11-27 | 289-572 | not yet reported which blocks → | Fibernetics Corporation | 464D | King City | — |
| 2007-11-27 | 289-589 | not yet reported which blocks → | Fibernetics Corporation | 464D | Woodbridge | — |
| 2007-11-26 | 289-573 | not yet reported which blocks → | Fibernetics Corporation | 464D | Oak Ridges | — |
| 2007-11-26 | 289-574 | not yet reported which blocks → | Fibernetics Corporation | 464D | Schomberg | — |
| 2007-11-26 | 289-576 | not yet reported which blocks → | Fibernetics Corporation | 464D | Sutton | — |
| 2007-11-26 | 289-578 | not yet reported which blocks → | Fibernetics Corporation | 464D | Stouffville | — |
| 2007-11-26 | 289-579 | not yet reported which blocks → | Fibernetics Corporation | 464D | Newmarket | — |
| 2007-11-26 | 289-580 | not yet reported which blocks → | Fibernetics Corporation | 464D | Queensville | — |
| 2007-11-26 | 289-581 | not yet reported which blocks → | Fibernetics Corporation | 464D | Uxbridge | — |
| 2007-11-26 | 289-582 | not yet reported which blocks → | Fibernetics Corporation | 464D | Thornhill | — |
| 2007-11-26 | 289-583 | not yet reported which blocks → | Fibernetics Corporation | 464D | Maple | — |
| 2007-11-26 | 289-584 | not yet reported which blocks → | Fibernetics Corporation | 464D | Unionville | — |
| 2007-11-26 | 289-590 | not yet reported which blocks → | Fibernetics Corporation | 464D | Markham | — |
| 2007-11-23 | 289-488 | not yet reported which blocks → | Fibernetics Corporation | 464D | Welland | — |
| 2007-11-23 | 289-585 | not yet reported which blocks → | Fibernetics Corporation | 464D | Bolton | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.