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 |
|---|---|---|---|---|---|---|
| 2017-08-21 | 249-505 | not yet reported which blocks → | Iristel Inc. | 154E | Alliston | — |
| 2017-08-08 | 249-702 | not yet reported which blocks → | Iristel Inc. | 154E | Lindsay | — |
| 2017-07-20 | 249-699 | not yet reported which blocks → | Iristel Inc. | 154E | Huntsville | — |
| 2017-06-16 | 249-449 | not yet reported which blocks → | Iristel Inc. | 154E | Orillia | — |
| 2017-05-26 | 249-806 | not yet reported which blocks → | Iristel Inc. | 154E | Sudbury | — |
| 2017-05-25 | 249-504 | not yet reported which blocks → | Iristel Inc. | 154E | Peterborough | — |
| 2017-02-16 | 249-498 | not yet reported which blocks → | Iristel Inc. | 154E | Barrie | — |
| 2017-02-16 | 249-800 | not yet reported which blocks → | Iristel Inc. | 154E | Barrie | — |
| 2016-12-12 | 249-497 | not yet reported which blocks → | Iristel Inc. | 154E | Gore Bay | — |
| 2016-10-03 | 249-496 | not yet reported which blocks → | Iristel Inc. | 154E | Foleyet | — |
| 2016-06-30 | 249-495 | not yet reported which blocks → | Iristel Inc. | 154E | Barrie | — |
| 2016-02-26 | 249-701 | not yet reported which blocks → | Iristel Inc. | 154E | Parry Sound | — |
| 2016-02-19 | 249-493 | not yet reported which blocks → | Iristel Inc. | 154E | Sault Ste. Marie | — |
| 2016-02-19 | 249-494 | not yet reported which blocks → | Iristel Inc. | 154E | Peterborough | — |
| 2016-02-18 | 249-805 | not yet reported which blocks → | Iristel Inc. | 154E | Sudbury | — |
| 2016-02-16 | 249-315 | not yet reported which blocks → | Iristel Inc. | 154E | Barrie | — |
| 2016-02-09 | 249-491 | not yet reported which blocks → | Iristel Inc. | 154E | Markstay | — |
| 2016-02-09 | 249-492 | not yet reported which blocks → | Iristel Inc. | 154E | Midland | — |
| 2016-02-04 | 249-200 | not yet reported which blocks → | Iristel Inc. | 154E | Espanola | — |
| 2016-02-03 | 249-499 | not yet reported which blocks → | Iristel Inc. | 154E | Collingwood | — |
| 2016-02-03 | 249-502 | not yet reported which blocks → | Iristel Inc. | 154E | Bracebridge | — |
| 2016-02-03 | 249-503 | not yet reported which blocks → | Iristel Inc. | 154E | Campbellford | — |
| 2016-02-01 | 249-490 | not yet reported which blocks → | Iristel Inc. | 154E | Bobcaygeon | — |
| 2016-01-29 | 249-500 | not yet reported which blocks → | Iristel Inc. | 154E | Algoma Mills | — |
| 2016-01-29 | 249-501 | not yet reported which blocks → | Iristel Inc. | 154E | Alliston | — |
| 2013-04-16 | 249-700 | not yet reported which blocks → | Iristel Inc. | 154E | Huntsville | — |
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.