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 |
|---|---|---|---|---|---|---|
| 2018-08-20 | 587-371 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2018-08-20 | 587-397 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2018-07-19 | 587-935 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2018-07-16 | 587-932 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2018-03-19 | 587-916 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2018-03-19 | 587-934 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2018-02-01 | 587-915 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2017-07-31 | 587-942 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2017-06-15 | 587-909 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2017-04-11 | 587-940 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2017-03-31 | 587-992 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2017-03-16 | 587-908 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2016-06-01 | 587-993 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2016-03-01 | 587-967 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2016-02-18 | 587-545 | not yet reported which blocks → | Bell Mobility | 6574 | Edmonton | — |
| 2016-02-18 | 587-839 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2016-01-04 | 587-965 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2015-12-04 | 587-904 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2015-11-17 | 587-964 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2015-11-16 | 587-961 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2015-11-09 | 587-837 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2015-10-28 | 587-836 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2015-10-19 | 587-963 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2015-09-28 | 587-385 | not yet reported which blocks → | Bell Mobility | 6574 | Edmonton | — |
| 2015-08-27 | 587-949 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2015-07-09 | 587-948 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2015-04-29 | 587-532 | not yet reported which blocks → | Bell Mobility | 6574 | Edmonton | — |
| 2015-04-29 | 587-835 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2015-04-29 | 587-941 | not yet reported which blocks → | Bell Mobility | 6574 | Fort McMurray | — |
| 2015-04-28 | 587-394 | not yet reported which blocks → | Bell Mobility | 6574 | Lethbridge | — |
| 2015-04-28 | 587-398 | not yet reported which blocks → | Bell Mobility | 6574 | Bonnyville | — |
| 2015-04-28 | 587-399 | not yet reported which blocks → | Bell Mobility | 6574 | Lloydminster | — |
| 2015-03-27 | 587-846 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2015-02-11 | 587-947 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2015-02-06 | 587-366 | not yet reported which blocks → | Bell Mobility | 6574 | Medicine Hat | — |
| 2015-02-02 | 587-946 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2014-10-10 | 587-357 | not yet reported which blocks → | Bell Mobility | 6574 | Edmonton | — |
| 2014-10-10 | 587-834 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2014-08-11 | 587-845 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2014-05-30 | 587-346 | not yet reported which blocks → | Bell Mobility | 6574 | Edmonton | — |
| 2014-05-30 | 587-348 | not yet reported which blocks → | Bell Mobility | 6574 | Grande Prairie | — |
| 2014-05-30 | 587-378 | not yet reported which blocks → | Bell Mobility | 6574 | Red Deer | — |
| 2014-05-30 | 587-833 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2014-05-30 | 587-919 | not yet reported which blocks → | Bell Mobility | 6574 | Fort McMurray | — |
| 2014-05-12 | 587-945 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2013-12-20 | 587-341 | not yet reported which blocks → | Bell Mobility | 6574 | Edmonton | — |
| 2013-09-25 | 587-832 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2013-09-16 | 587-831 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2013-07-17 | 587-340 | not yet reported which blocks → | Bell Mobility | 6574 | Edmonton | — |
| 2013-07-17 | 587-830 | not yet reported which blocks → | Bell Mobility | 6574 | 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.