NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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 604
New assignments by month
Sep 2026
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2013-10-15 | 604-416 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Vancouver | — |
| 2013-09-06 | 604-423 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Vancouver | — |
| 2013-04-02 | 604-402 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Chilliwack | — |
| 2013-04-02 | 604-410 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Mission | — |
| 2013-04-02 | 604-705 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Sardis | — |
| 2013-04-02 | 604-776 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Abbotsford | — |
| 2012-11-27 | 604-428 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Vancouver | — |
| 2012-06-08 | 604-427 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Langley | — |
| 2012-03-09 | 604-372 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Cloverdale | — |
| 2012-03-01 | 604-371 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Fort Langley | — |
| 2012-03-01 | 604-380 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Haney | — |
| 2012-03-01 | 604-390 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Squamish | — |
| 2012-03-01 | 604-405 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Whonnock | — |
| 2012-03-01 | 604-457 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Pitt Meadows | — |
| 2012-02-28 | 604-381 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Aldergrove | — |
| 2011-10-11 | 604-385 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | White Rock | — |
| 2011-09-30 | 604-281 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | West Vancouver | — |
| 2011-09-30 | 604-370 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Richmond | — |
| 2011-09-30 | 604-474 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Port Coquitlam | — |
| 2011-09-30 | 604-492 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Port Moody | — |
| 2011-09-30 | 604-498 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Whalley | — |
| 2011-09-30 | 604-503 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Newton | — |
| 2011-09-30 | 604-553 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | New Westminster | — |
| 2011-09-30 | 604-770 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | North Vancouver | — |
| 2011-05-18 | 604-336 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Vancouver | — |
| 2011-03-07 | 604-497 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Whalley | — |
| 2010-12-03 | 604-620 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Vancouver | — |
| 2010-11-09 | 604-382 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Ladner | — |
| 2010-11-05 | 604-559 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Vancouver | — |
| 2010-09-07 | 604-558 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Vancouver | — |
| 2010-06-04 | 604-758 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Abbotsford | — |
| 2010-04-27 | 604-563 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Vancouver | — |
| 2010-04-26 | 604-383 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Ladner | — |
| 2010-01-28 | 604-384 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Pemberton | — |
| 2010-01-14 | 604-458 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Pitt Meadows | — |
| 2010-01-14 | 604-481 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Haney | — |
| 2009-12-02 | 604-479 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Haney | — |
| 2009-11-04 | 604-391 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Chilliwack | — |
| 2009-10-30 | 604-564 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Vancouver | — |
| 2009-06-18 | 604-475 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Port Coquitlam | — |
| 2009-06-09 | 604-447 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Richmond | — |
| 2009-06-09 | 604-496 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Whalley | — |
| 2009-06-09 | 604-544 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | New Westminster | — |
| 2009-06-08 | 604-510 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Langley | — |
| 2009-06-08 | 604-560 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | White Rock | — |
| 2009-06-08 | 604-593 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Newton | — |
| 2009-06-08 | 604-971 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | North Vancouver | — |
| 2009-03-18 | 604-565 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Vancouver | — |
| 2008-12-15 | 604-547 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Newton | — |
| 2008-12-15 | 604-743 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Abbotsford | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.