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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2013-04-19 | 587-432 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2013-04-10 | 587-334 | not yet reported which blocks → | Bell Mobility | 6574 | Edmonton | — |
| 2013-03-08 | 587-439 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2013-03-05 | 587-338 | not yet reported which blocks → | Bell Mobility | 6574 | Edmonton | — |
| 2013-01-28 | 587-944 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2012-10-05 | 587-370 | not yet reported which blocks → | Bell Mobility | 6574 | Lethbridge | — |
| 2012-07-30 | 587-438 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2012-07-26 | 587-337 | not yet reported which blocks → | Bell Mobility | 6574 | Edmonton | — |
| 2012-03-22 | 587-437 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2011-11-23 | 587-903 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2011-10-25 | 587-377 | not yet reported which blocks → | Bell Mobility | 6574 | Red Deer | — |
| 2011-10-18 | 587-336 | not yet reported which blocks → | Bell Mobility | 6574 | Edmonton | — |
| 2011-10-18 | 587-343 | not yet reported which blocks → | Bell Mobility | 6574 | Grande Prairie | — |
| 2011-02-02 | 587-335 | not yet reported which blocks → | Bell Mobility | 6574 | Edmonton | — |
| 2011-02-02 | 587-436 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2010-11-05 | 587-435 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2010-08-06 | 587-434 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2010-06-08 | 587-433 | 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.