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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2017-03-31 | 873-503 | not yet reported which blocks → | Iristel Inc. | 154E | Salluit | — |
| 2017-03-31 | 873-504 | not yet reported which blocks → | Iristel Inc. | 154E | Kangiqsualujjuaq | — |
| 2017-03-31 | 873-505 | not yet reported which blocks → | Iristel Inc. | 154E | Kangiqsujuaq | — |
| 2016-10-13 | 873-501 | not yet reported which blocks → | Iristel Inc. | 154E | Puvirnituk | — |
| 2016-10-13 | 873-502 | not yet reported which blocks → | Iristel Inc. | 154E | Inukjuak | — |
| 2016-06-30 | 873-771 | not yet reported which blocks → | Iristel Inc. | 154E | Rouyn-Noranda | — |
| 2016-03-07 | 873-738 | not yet reported which blocks → | Iristel Inc. | 154E | Buckingham | — |
| 2016-02-25 | 873-804 | not yet reported which blocks → | Iristel Inc. | 154E | Trois-Rivieres | — |
| 2016-02-19 | 873-737 | not yet reported which blocks → | Iristel Inc. | 154E | Shawinigan | — |
| 2016-02-12 | 873-736 | not yet reported which blocks → | Iristel Inc. | 154E | Ville-Marie | — |
| 2016-02-11 | 873-735 | not yet reported which blocks → | Iristel Inc. | 154E | Plessisville | — |
| 2016-02-09 | 873-734 | not yet reported which blocks → | Iristel Inc. | 154E | Maniwaki | — |
| 2016-02-08 | 873-732 | not yet reported which blocks → | Iristel Inc. | 154E | Lac-Megantic | — |
| 2016-02-04 | 873-371 | not yet reported which blocks → | Iristel Inc. | 154E | Deauville | — |
| 2016-01-22 | 873-770 | not yet reported which blocks → | Iristel Inc. | 154E | Val-D'Or | — |
| 2015-12-01 | 873-730 | not yet reported which blocks → | Iristel Inc. | 154E | Amos | — |
| 2015-09-28 | 873-803 | not yet reported which blocks → | Iristel Inc. | 154E | Ste-Agathe | — |
| 2015-02-05 | 873-300 | not yet reported which blocks → | Iristel Inc. | 154E | Victoriaville | — |
| 2014-11-20 | 873-500 | not yet reported which blocks → | Iristel Inc. | 154E | Sherbrooke | — |
| 2014-03-04 | 873-700 | not yet reported which blocks → | Iristel Inc. | 154E | Drummondville | — |
| 2013-04-16 | 873-800 | not yet reported which blocks → | Iristel Inc. | 154E | Gatineau | — |
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.