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 |
|---|---|---|---|---|---|---|
| 2020-09-11 | 819-581 | not yet reported which blocks → | Iristel Inc. | 154E | Gatineau | — |
| 2016-01-13 | 819-900 | not yet reported which blocks → | Iristel Inc. | 154E | Kuujjuaq | — |
| 2015-01-19 | 819-272 | not yet reported which blocks → | Iristel Inc. | 154E | Kuujjuaq | — |
| 2013-11-06 | 819-975 | not yet reported which blocks → | Iristel Inc. | 154E | Val-D'Or | — |
| 2012-06-01 | 819-201 | not yet reported which blocks → | Iristel Inc. | 154E | Magog | — |
| 2012-05-02 | 819-510 | not yet reported which blocks → | Iristel Inc. | 154E | Ottawa-Hull | — |
| 2012-03-22 | 819-414 | not yet reported which blocks → | Iristel Inc. | 154E | Ottawa-Hull | — |
| 2012-03-01 | 819-307 | not yet reported which blocks → | Iristel Inc. | 154E | Gatineau | — |
| 2011-09-20 | 819-412 | not yet reported which blocks → | Iristel Inc. | 154E | Ottawa-Hull | — |
| 2011-09-07 | 819-807 | not yet reported which blocks → | Iristel Inc. | 154E | Trois-Rivieres | — |
| 2011-08-19 | 819-410 | not yet reported which blocks → | Iristel Inc. | 154E | Ottawa-Hull | — |
| 2011-08-09 | 819-200 | not yet reported which blocks → | Iristel Inc. | 154E | Sherbrooke | — |
| 2010-09-10 | 819-803 | not yet reported which blocks → | Iristel Inc. | 154E | Drummondville | — |
| 2010-09-10 | 819-805 | not yet reported which blocks → | Iristel Inc. | 154E | Shawinigan | — |
| 2010-09-10 | 819-809 | not yet reported which blocks → | Iristel Inc. | 154E | Victoriaville | — |
| 2009-10-28 | 819-801 | not yet reported which blocks → | Iristel Inc. | 154E | Trois-Rivieres | — |
| 2009-02-25 | 819-303 | not yet reported which blocks → | Iristel Inc. | 154E | Gatineau | — |
| 2009-02-25 | 819-800 | not yet reported which blocks → | Iristel Inc. | 154E | Ottawa-Hull | — |
| 2008-09-11 | 819-300 | not yet reported which blocks → | Iristel Inc. | 154E | Sherbrooke | — |
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.