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 506
New assignments by month
Sep 2026
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2025-10-15 | 506-749 | not yet reported which blocks → | Iristel Inc. | 154E | Tracadie | — |
| 2025-10-14 | 506-972 | not yet reported which blocks → | Iristel Inc. | 154E | Doaktown | — |
| 2025-05-01 | 506-695 | not yet reported which blocks → | Iristel Inc. | 154E | Fredericton | — |
| 2025-05-01 | 506-748 | not yet reported which blocks → | Iristel Inc. | 154E | Tracadie | — |
| 2025-05-01 | 506-796 | not yet reported which blocks → | Iristel Inc. | 154E | Moncton | — |
| 2025-04-30 | 506-903 | not yet reported which blocks → | Iristel Inc. | 154E | Florenceville | — |
| 2025-04-30 | 506-970 | not yet reported which blocks → | Iristel Inc. | 154E | Doaktown | — |
| 2025-04-24 | 506-617 | not yet reported which blocks → | Iristel Inc. | 154E | Caraquet | — |
| 2025-04-24 | 506-905 | not yet reported which blocks → | Iristel Inc. | 154E | Dalhousie | — |
| 2022-10-19 | 506-541 | not yet reported which blocks → | Iristel Inc. | 154E | Woodstock | — |
| 2022-09-30 | 506-615 | not yet reported which blocks → | Iristel Inc. | 154E | Campbellton | — |
| 2022-09-22 | 506-901 | not yet reported which blocks → | Iristel Inc. | 154E | Grand Falls | — |
| 2021-09-09 | 506-723 | not yet reported which blocks → | Iristel Inc. | 154E | Shediac | — |
| 2021-08-06 | 506-409 | not yet reported which blocks → | Iristel Inc. | 154E | Campbellton | — |
| 2021-02-24 | 506-788 | not yet reported which blocks → | Iristel Inc. | 154E | Petitcodiac | — |
| 2020-10-19 | 506-315 | not yet reported which blocks → | Iristel Inc. | 154E | Edmundston | — |
| 2020-09-21 | 506-405 | not yet reported which blocks → | Iristel Inc. | 154E | Fredericton | — |
| 2020-09-09 | 506-560 | not yet reported which blocks → | Iristel Inc. | 154E | Sussex | — |
| 2020-09-08 | 506-699 | not yet reported which blocks → | Iristel Inc. | 154E | Shippagan | — |
| 2020-08-31 | 506-616 | not yet reported which blocks → | Iristel Inc. | 154E | Caraquet | — |
| 2020-08-28 | 506-436 | not yet reported which blocks → | Iristel Inc. | 154E | Bouctouche | — |
| 2020-02-24 | 506-404 | not yet reported which blocks → | Iristel Inc. | 154E | Richibucto | — |
| 2020-02-21 | 506-990 | not yet reported which blocks → | Iristel Inc. | 154E | Doaktown | — |
| 2020-02-18 | 506-526 | not yet reported which blocks → | Iristel Inc. | 154E | Harvey Station | — |
| 2020-02-11 | 506-516 | not yet reported which blocks → | Iristel Inc. | 154E | Woodstock | — |
| 2019-10-29 | 506-770 | not yet reported which blocks → | Iristel Inc. | 346J | Saint John | — |
| 2019-10-18 | 506-797 | not yet reported which blocks → | Iristel Inc. | 154E | Moncton | — |
| 2019-10-03 | 506-305 | not yet reported which blocks → | Iristel Inc. | 154E | Edmundston | — |
| 2019-09-17 | 506-308 | not yet reported which blocks → | Iristel Inc. | 154E | Miramichi | — |
| 2019-07-31 | 506-910 | not yet reported which blocks → | Iristel Inc. | 154E | Saint John | — |
| 2019-07-19 | 506-909 | not yet reported which blocks → | Iristel Inc. | 154E | Grand Falls | — |
| 2019-07-18 | 506-908 | not yet reported which blocks → | Iristel Inc. | 154E | Florenceville | — |
| 2019-07-05 | 506-907 | not yet reported which blocks → | Iristel Inc. | 154E | Dalhousie | — |
| 2019-06-14 | 506-407 | not yet reported which blocks → | Iristel Inc. | 346J | Moncton | — |
| 2019-05-06 | 506-496 | not yet reported which blocks → | Iristel Inc. | 154E | Bathurst | — |
| 2018-07-09 | 506-497 | not yet reported which blocks → | Iristel Inc. | 154E | Woodstock | — |
| 2018-06-19 | 506-719 | not yet reported which blocks → | Iristel Inc. | 154E | Saint John | — |
| 2018-03-12 | 506-718 | not yet reported which blocks → | Iristel Inc. | 154E | Tracadie | — |
| 2017-11-21 | 506-809 | not yet reported which blocks → | Iristel Inc. | 154E | Campbellton | — |
| 2017-08-16 | 506-307 | not yet reported which blocks → | Iristel Inc. | 154E | Miramichi | — |
| 2017-08-16 | 506-498 | not yet reported which blocks → | Iristel Inc. | 154E | Bathurst | — |
| 2017-05-24 | 506-306 | not yet reported which blocks → | Iristel Inc. | 154E | Edmundston | — |
| 2016-12-23 | 506-406 | not yet reported which blocks → | Iristel Inc. | 154E | Fredericton | — |
| 2016-12-23 | 506-606 | not yet reported which blocks → | Iristel Inc. | 154E | Fredericton | — |
| 2016-03-02 | 506-717 | not yet reported which blocks → | Iristel Inc. | 154E | Saint John | — |
| 2016-02-12 | 506-713 | not yet reported which blocks → | Iristel Inc. | 154E | St. George | — |
| 2016-02-12 | 506-714 | not yet reported which blocks → | Iristel Inc. | 154E | St. Stephen | — |
| 2016-02-12 | 506-715 | not yet reported which blocks → | Iristel Inc. | 154E | Shippagan | — |
| 2016-02-12 | 506-716 | not yet reported which blocks → | Iristel Inc. | 154E | Tracadie | — |
| 2016-02-11 | 506-709 | not yet reported which blocks → | Iristel Inc. | 154E | Richibucto | — |
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.