NumberResearchRecent prefix assignments
375 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/30/2026
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, last 30 days
New assignments by month
Sep 2026
Aug 2026
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May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
Quick find in this area code:
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2017-07-25 | 343-229 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Madoc | — |
| 2017-07-25 | 343-230 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Marmora | — |
| 2017-07-25 | 343-231 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Maynooth | — |
| 2017-07-25 | 343-232 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Northbrook | — |
| 2017-07-25 | 343-233 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Plevna | — |
| 2017-07-25 | 343-234 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Tweed | — |
| 2017-07-25 | 343-235 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Alexandria | — |
| 2017-07-25 | 343-236 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Iroquois | — |
| 2017-07-25 | 343-237 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Maxville | — |
| 2017-07-25 | 343-238 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Morrisburg | — |
| 2017-07-25 | 343-239 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | St. Isidore | — |
| 2017-07-25 | 727-268 | 0–9 XXXall 10 · 6 holders which blocks → | BHN IP ENABLED SERVICES, LLC | 045L | HUDSON | FL |
| 2017-07-25 | 930-202 | 0–9 XXXall 10 · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - IN | 7314 | CHARLESTN | IN |
| 2017-07-25 | 954-498 | 0–9 XXXall 10 · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | FTLAUDERDL | FL |
| 2017-07-24 | 236-328 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Westview | — |
| 2017-07-24 | 236-329 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Black Point | — |
| 2017-07-24 | 343-747 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | L'Orignal | — |
| 2017-07-24 | 343-748 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Vankleek Hill | — |
| 2017-07-24 | 343-749 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Wellington | — |
| 2017-07-24 | 343-750 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Stirling | — |
| 2017-07-24 | 343-751 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Frankford | — |
| 2017-07-24 | 343-752 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Bloomfield | — |
| 2017-07-24 | 343-996 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Ottawa-Hull | — |
| 2017-07-24 | 343-997 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Ottawa-Hull | — |
| 2017-07-24 | 438-722 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Montreal | — |
| 2017-07-24 | 438-725 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Montreal | — |
| 2017-07-24 | 438-728 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Montreal | — |
| 2017-07-24 | 515-870 | 0XXX2XXX7XXX8XXX · 4 holders which blocks → | INDEPENDENT NETWORKS, LLC | 7215 | SWEA CITY | IA |
| 2017-07-24 | 571-651 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN17 | VA |
| 2017-07-24 | 657-314 | 0–9 XXXall 10 · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SILVERADO | CA |
| 2017-07-24 | 782-827 | not yet reported which blocks → | Iristel Inc. | 154E | Halifax | — |
| 2017-07-21 | 224-264 | 0–9 XXXwhole prefix which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | 7136 | DESPLAINES | IL |
| 2017-07-21 | 267-883 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PHPHSBZN43 | PA |
| 2017-07-21 | 312-538 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS, INC. | 5562 | CHICGOZN01 | IL |
| 2017-07-21 | 575-530 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NM | 123F | CLOVIS | NM |
| 2017-07-21 | 708-438 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | BLUEISLAND | IL |
| 2017-07-21 | 720-516 | 0–9 XXXwhole prefix which blocks → | QWEST CORPORATION | 9636 | DENVER | CO |
| 2017-07-21 | 732-405 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PERTHAMBOY | NJ |
| 2017-07-21 | 774-346 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | FRAMINGHAM | MA |
| 2017-07-21 | 959-202 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | TORRINGTON | CT |
| 2017-07-20 | 249-699 | not yet reported which blocks → | Iristel Inc. | 154E | Huntsville | — |
| 2017-07-20 | 312-535 | 0–9 XXXall 10 · 2 holders which blocks → | BANDWIDTH.COM CLEC, LLC - IL | 984E | CHICGOZN01 | IL |
| 2017-07-20 | 334-800 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - AL | 604E | GREENSBORO | AL |
| 2017-07-20 | 334-999 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - AL | 604E | HOLTVILLE | AL |
| 2017-07-20 | 365-699 | not yet reported which blocks → | Iristel Inc. | 154E | Markham | — |
| 2017-07-20 | 405-891 | 0XXX1XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OK | 119F | TUTTLE | OK |
| 2017-07-20 | 437-922 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2017-07-20 | 437-925 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2017-07-20 | 437-928 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2017-07-20 | 437-929 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.