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 587
New assignments by month
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2018-01-15 | 587-695 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Edmonton International Airport | — |
| 2017-06-26 | 587-627 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Stettler | — |
| 2015-05-05 | 587-393 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Calgary | — |
| 2014-12-11 | 587-358 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Calgary | — |
| 2014-06-06 | 587-392 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Calgary | — |
| 2014-04-09 | 587-356 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Calgary | — |
| 2014-04-09 | 587-526 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Edmonton | — |
| 2014-01-02 | 587-624 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Anzac | — |
| 2013-10-15 | 587-391 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Calgary | — |
| 2013-10-15 | 587-635 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Edmonton | — |
| 2013-09-10 | 587-525 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Edmonton | — |
| 2013-09-06 | 587-354 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Calgary | — |
| 2013-01-25 | 587-270 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Brooks | — |
| 2012-09-18 | 587-524 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Edmonton | — |
| 2012-09-13 | 587-349 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Calgary | — |
| 2012-05-18 | 587-450 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Fort McMurray | — |
| 2012-03-13 | 587-269 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Sherwood Park | — |
| 2012-03-13 | 587-273 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Red Deer | — |
| 2012-03-13 | 587-274 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Leduc | — |
| 2012-03-13 | 587-276 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Fort McMurray | — |
| 2012-03-13 | 587-285 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Fort Saskatchewan | — |
| 2012-03-13 | 587-286 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Spruce Grove | — |
| 2012-03-13 | 587-289 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Medicine Hat | — |
| 2012-03-13 | 587-290 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | St. Albert | — |
| 2012-03-13 | 587-425 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Lethbridge | — |
| 2012-03-13 | 587-523 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Edmonton | — |
| 2012-02-15 | 587-390 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Calgary | — |
| 2012-02-06 | 587-353 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Calgary | — |
| 2012-02-06 | 587-521 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Edmonton | — |
| 2012-01-05 | 587-272 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Red Deer | — |
| 2011-11-15 | 587-275 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Fort McMurray | — |
| 2011-09-30 | 587-360 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Airdrie | — |
| 2011-09-30 | 587-361 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Canmore | — |
| 2011-09-30 | 587-362 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Cochrane | — |
| 2011-09-30 | 587-363 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | High River | — |
| 2011-09-30 | 587-364 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Okotoks | — |
| 2011-09-30 | 587-365 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Strathmore | — |
| 2011-09-07 | 587-352 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Calgary | — |
| 2011-09-07 | 587-520 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Edmonton | — |
| 2011-04-08 | 587-271 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Raymond | — |
| 2010-09-28 | 587-351 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Calgary | — |
| 2010-08-27 | 587-350 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Calgary | — |
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.