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
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 |
|---|---|---|---|---|---|---|
| 2018-08-02 | 587-374 | not yet reported which blocks → | Iristel Inc. | 154E | Fort McMurray | — |
| 2018-07-06 | 587-715 | not yet reported which blocks → | Iristel Inc. | 154E | Blackfalds | — |
| 2018-07-06 | 587-912 | not yet reported which blocks → | Iristel Inc. | 154E | Coaldale | — |
| 2017-11-23 | 587-900 | not yet reported which blocks → | Iristel Inc. | 154E | Langdon | — |
| 2017-11-22 | 587-571 | not yet reported which blocks → | Iristel Inc. | 154E | Grande Prairie | — |
| 2017-11-21 | 587-905 | not yet reported which blocks → | Iristel Inc. | 154E | Banff | — |
| 2017-08-31 | 587-609 | not yet reported which blocks → | Iristel Inc. | 154E | High River | — |
| 2017-08-31 | 587-612 | not yet reported which blocks → | Iristel Inc. | 154E | Lethbridge | — |
| 2017-08-30 | 587-603 | not yet reported which blocks → | Iristel Inc. | 154E | Anzac | — |
| 2017-08-30 | 587-608 | not yet reported which blocks → | Iristel Inc. | 154E | Drumheller | — |
| 2017-08-09 | 587-570 | not yet reported which blocks → | Iristel Inc. | 154E | St. Albert | — |
| 2017-07-13 | 587-906 | not yet reported which blocks → | Iristel Inc. | 154E | Leduc | — |
| 2017-06-08 | 587-713 | not yet reported which blocks → | Iristel Inc. | 154E | Sherwood Park | — |
| 2017-06-08 | 587-714 | not yet reported which blocks → | Iristel Inc. | 154E | Sherwood Park | — |
| 2017-06-02 | 587-705 | not yet reported which blocks → | Iristel Inc. | 154E | Medicine Hat | — |
| 2017-05-26 | 587-843 | not yet reported which blocks → | Iristel Inc. | 154E | Vegreville | — |
| 2017-03-24 | 587-740 | not yet reported which blocks → | Iristel Inc. | 154E | Hardisty | — |
| 2017-03-24 | 587-741 | not yet reported which blocks → | Iristel Inc. | 154E | Hay Lakes | — |
| 2017-03-24 | 587-742 | not yet reported which blocks → | Iristel Inc. | 154E | Wetaskiwin | — |
| 2016-12-13 | 587-844 | not yet reported which blocks → | Iristel Inc. | 154E | Camrose | — |
| 2016-12-07 | 587-406 | not yet reported which blocks → | Iristel Inc. | 154E | St. Paul | — |
| 2016-12-07 | 587-606 | not yet reported which blocks → | Iristel Inc. | 154E | Vermilion | — |
| 2016-12-07 | 587-607 | not yet reported which blocks → | Iristel Inc. | 154E | Wainwright | — |
| 2016-12-05 | 587-210 | not yet reported which blocks → | Iristel Inc. | 154E | Lac La Biche | — |
| 2016-12-05 | 587-605 | not yet reported which blocks → | Iristel Inc. | 154E | Lloydminster | — |
| 2016-11-23 | 587-840 | not yet reported which blocks → | Iristel Inc. | 154E | Bonnyville | — |
| 2016-11-23 | 587-841 | not yet reported which blocks → | Iristel Inc. | 154E | Boyle | — |
| 2016-11-23 | 587-842 | not yet reported which blocks → | Iristel Inc. | 154E | Drayton Valley | — |
| 2016-09-01 | 587-819 | not yet reported which blocks → | Iristel Inc. | 154E | Red Deer | — |
| 2016-08-30 | 587-818 | not yet reported which blocks → | Iristel Inc. | 154E | Grande Prairie | — |
| 2016-08-17 | 587-816 | not yet reported which blocks → | Iristel Inc. | 154E | Brooks | — |
| 2016-08-17 | 587-817 | not yet reported which blocks → | Iristel Inc. | 154E | Edson | — |
| 2016-06-07 | 587-205 | not yet reported which blocks → | Iristel Inc. | 154E | Peace River | — |
| 2016-06-07 | 587-206 | not yet reported which blocks → | Iristel Inc. | 154E | Stony Plain | — |
| 2016-03-24 | 587-200 | not yet reported which blocks → | Iristel Inc. | 154E | Sherwood Park | — |
| 2016-03-04 | 587-854 | not yet reported which blocks → | Iristel Inc. | 154E | Stettler | — |
| 2016-03-02 | 587-815 | not yet reported which blocks → | Iristel Inc. | 154E | Red Deer | — |
| 2016-02-18 | 587-814 | not yet reported which blocks → | Iristel Inc. | 154E | Medicine Hat | — |
| 2016-02-16 | 587-813 | not yet reported which blocks → | Iristel Inc. | 154E | Lethbridge | — |
| 2016-02-12 | 587-847 | not yet reported which blocks → | Iristel Inc. | 154E | Valleyview | — |
| 2016-02-12 | 587-848 | not yet reported which blocks → | Iristel Inc. | 154E | Strathmore | — |
| 2016-02-12 | 587-856 | not yet reported which blocks → | Iristel Inc. | 154E | Vauxhall | — |
| 2016-02-12 | 587-857 | not yet reported which blocks → | Iristel Inc. | 154E | Veteran | — |
| 2016-02-12 | 587-858 | not yet reported which blocks → | Iristel Inc. | 154E | Vulcan | — |
| 2016-02-11 | 587-849 | not yet reported which blocks → | Iristel Inc. | 154E | Spirit River | — |
| 2016-02-11 | 587-850 | not yet reported which blocks → | Iristel Inc. | 154E | Ponoka | — |
| 2016-02-11 | 587-851 | not yet reported which blocks → | Iristel Inc. | 154E | Rocky Mountain House | — |
| 2016-02-11 | 587-852 | not yet reported which blocks → | Iristel Inc. | 154E | Sexsmith | — |
| 2016-02-11 | 587-853 | not yet reported which blocks → | Iristel Inc. | 154E | Spruce Grove | — |
| 2016-02-11 | 587-875 | not yet reported which blocks → | Iristel Inc. | 154E | Pincher Creek | — |
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.