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 450
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 |
|---|---|---|---|---|---|---|
| 2023-06-28 | 450-257 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Granby | — |
| 2023-06-28 | 450-942 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Granby | — |
| 2022-10-07 | 450-382 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Laval-Est | — |
| 2022-10-07 | 450-683 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Laval-Ouest | — |
| 2019-02-25 | 450-514 | not yet reported which blocks → | InnSysVoice Corp | 383H | Laval-Ouest | — |
| 2019-02-22 | 450-343 | not yet reported which blocks → | InnSysVoice Corp | 383H | Chomedey | — |
| 2019-02-08 | 450-428 | not yet reported which blocks → | 9164-3122 Quebec inc | 843D | St-Pie | — |
| 2017-07-17 | 450-367 | not yet reported which blocks → | Iristel Inc. | 154E | Laval-Est | — |
| 2017-07-17 | 450-879 | not yet reported which blocks → | Iristel Inc. | 154E | Laval-Ouest | — |
| 2013-06-21 | 450-351 | not yet reported which blocks → | Comwave Networks | 160G | Beauharnois | — |
| 2013-06-21 | 450-353 | not yet reported which blocks → | Comwave Networks | 160G | Howick | — |
| 2013-06-21 | 450-364 | not yet reported which blocks → | Comwave Networks | 160G | St-Chrysostome | — |
| 2013-06-21 | 450-387 | not yet reported which blocks → | Comwave Networks | 160G | St-Constant | — |
| 2013-06-21 | 450-481 | not yet reported which blocks → | Comwave Networks | 160G | St-Remi | — |
| 2013-03-01 | 450-345 | not yet reported which blocks → | 9164-3122 Quebec inc | 843D | Pierreville | — |
| 2012-10-29 | 450-486 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Lambert | — |
| 2012-10-29 | 450-490 | not yet reported which blocks → | Videotron Ltd. | 8306 | Pont-Viau | — |
| 2012-10-29 | 450-527 | not yet reported which blocks → | Videotron Ltd. | 8306 | Beloeil | — |
| 2012-08-14 | 450-363 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Boucherville | — |
| 2012-08-14 | 450-457 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | St-Bruno | — |
| 2012-06-01 | 450-485 | not yet reported which blocks → | Iristel Inc. | 154E | St-Eustache | — |
| 2012-05-25 | 450-636 | not yet reported which blocks → | Videotron Ltd. | 8306 | Hemmingford | — |
| 2012-05-25 | 450-637 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Chrysostome | — |
| 2012-05-25 | 450-843 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ormstown | — |
| 2012-05-25 | 450-957 | not yet reported which blocks → | Videotron Ltd. | 8306 | Huntingdon | — |
| 2012-04-04 | 450-352 | not yet reported which blocks → | 9164-3122 Quebec inc | 843D | Sorel | — |
| 2012-04-02 | 450-362 | not yet reported which blocks → | 9164-3122 Quebec inc | 843D | Yamaska | — |
| 2012-03-20 | 450-497 | not yet reported which blocks → | Iristel Inc. | 154E | Chomedey | — |
| 2012-03-19 | 450-489 | not yet reported which blocks → | Iristel Inc. | 154E | Chambly | — |
| 2012-02-27 | 450-913 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Coteau-Landing | — |
| 2012-02-24 | 450-605 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Riviere-Beaudette | — |
| 2012-02-24 | 450-606 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St-Clet | — |
| 2012-02-24 | 450-609 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Ste-Justine-de-Newton | — |
| 2012-02-24 | 450-620 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St-Polycarpe | — |
| 2012-02-24 | 450-634 | not yet reported which blocks → | Iristel Inc. | 154E | Laval-Ouest | — |
| 2012-02-24 | 450-639 | not yet reported which blocks → | Iristel Inc. | 154E | Laval-Est | — |
| 2011-12-21 | 450-912 | not yet reported which blocks → | Iristel Inc. | 154E | Longueuil | — |
| 2011-11-21 | 450-693 | not yet reported which blocks → | Distributel | 083E | Longueuil | — |
| 2011-09-30 | 450-866 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St-Jacques | — |
| 2011-09-30 | 450-870 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St-Michel-des-Saints | — |
| 2011-09-28 | 450-832 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St-Jean-de-Matha | — |
| 2011-09-28 | 450-837 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St-Felix-de-Valois | — |
| 2011-09-28 | 450-840 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St-Gabriel-de-Brandon | — |
| 2011-09-28 | 450-842 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St-Barthelemy | — |
| 2011-09-28 | 450-850 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St-Alphonse-de-Rodriguez | — |
| 2011-09-13 | 450-408 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | St-Damase | — |
| 2011-09-13 | 450-410 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | St-Hugues | — |
| 2011-09-13 | 450-418 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | St-Hyacinthe | — |
| 2011-09-13 | 450-423 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | St-Jude | — |
| 2011-09-13 | 450-425 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | St-Pie | — |
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.