NumberResearchRecent prefix assignments
355 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, last 30 days
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2010-05-13 | 334-589 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL | 6804 | MIDLAND CY | AL |
| 2010-05-13 | 403-906 | not yet reported which blocks → | Distributel | 081E | Calgary | — |
| 2010-05-13 | 413-355 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | SPRINGFLD | MA |
| 2010-05-13 | 585-250 | 0–9 XXXall 10 · 4 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | BATAVIA | NY |
| 2010-05-13 | 585-270 | 0–9 XXXall 10 · 5 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | ROCHESTER | NY |
| 2010-05-13 | 604-398 | not yet reported which blocks → | Distributel | 081E | Vancouver | — |
| 2010-05-13 | 604-914 | not yet reported which blocks → | Distributel | 081E | North Vancouver | — |
| 2010-05-13 | 607-224 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | HAMMONDSPT | NY |
| 2010-05-13 | 709-373 | not yet reported which blocks → | Bragg Communications Inc. | 4878 | Bay L'Argent | — |
| 2010-05-13 | 709-374 | not yet reported which blocks → | Bragg Communications Inc. | 4878 | Rushoon | — |
| 2010-05-13 | 709-375 | not yet reported which blocks → | Bragg Communications Inc. | 4878 | Terrenceville | — |
| 2010-05-13 | 709-376 | not yet reported which blocks → | Bragg Communications Inc. | 4878 | English Harbour East | — |
| 2010-05-13 | 780-250 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Edmonton | — |
| 2010-05-13 | 819-236 | not yet reported which blocks → | TELUS Quebec | 2243 | Labelle | — |
| 2010-05-12 | 450-504 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Jerome | — |
| 2010-05-12 | 512-333 | 0–9 XXXall 10 · 3 holders which blocks → | USFON, INC. - TX | 473F | AUSTIN | TX |
| 2010-05-12 | 647-771 | not yet reported which blocks → | Videotron Ltd. | 383F | Toronto | — |
| 2010-05-12 | 647-772 | not yet reported which blocks → | Videotron Ltd. | 383F | Toronto | — |
| 2010-05-12 | 720-440 | 0–9 XXXall 10 · 7 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DENVER | CO |
| 2010-05-12 | 819-908 | not yet reported which blocks → | Videotron Ltd. | 8306 | Richmond | — |
| 2010-05-12 | 864-405 | 0–9 XXXall 10 · 7 holders which blocks → | PBT COMMUNICATIONS, INC. - SC | 3453 | SALUDA | SC |
| 2010-05-12 | 979-313 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | BRAZORIA | TX |
| 2010-05-11 | 302-332 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE | 6393 | WILMINGTON | DE |
| 2010-05-11 | 318-540 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA | 6505 | SHREVEPORT | LA |
| 2010-05-11 | 541-638 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OR | 076F | BLACKBUTTE | OR |
| 2010-05-11 | 707-595 | 0–9 XXXall 10 · 5 holders which blocks → | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7174 | SANTA ROSA | CA |
| 2010-05-11 | 817-363 | 0–9 XXXall 10 · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FORT WORTH | TX |
| 2010-05-11 | 830-341 | 0–9 XXXall 10 · 6 holders which blocks → | ONVOY, LLC - TX | 903C | PLEASANTON | TX |
| 2010-05-11 | 832-749 | 0–9 XXXall 10 · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HOUSTON | TX |
| 2010-05-11 | 903-787 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | TYLER | TX |
| 2010-05-10 | 254-257 | not yet reported which blocks → | AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX | 0132 | MAY | TX |
| 2010-05-10 | 254-641 | not yet reported which blocks → | AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX | 0132 | RISINGSTAR | TX |
| 2010-05-10 | 325-264 | not yet reported which blocks → | AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX | 0132 | BLACKWELL | TX |
| 2010-05-10 | 518-300 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ALBANY | NY |
| 2010-05-10 | 848-227 | 0–9 XXXall 10 · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ | 7142 | LAKEHURST | NJ |
| 2010-05-07 | 204-890 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Winnipeg | — |
| 2010-05-07 | 226-971 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Guelph | — |
| 2010-05-07 | 226-972 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Kitchener-Waterloo | — |
| 2010-05-07 | 226-973 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | London | — |
| 2010-05-07 | 226-974 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Owen Sound | — |
| 2010-05-07 | 234-475 | 0–9 XXXwhole prefix which blocks → | OHIO BELL TEL CO | 9321 | AKRON | OH |
| 2010-05-07 | 347-340 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS, INC. | 5562 | NWYRCYZN03 | NY |
| 2010-05-07 | 434-233 | 0–9 XXXall 10 · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | SOUTH HILL | VA |
| 2010-05-07 | 604-500 | not yet reported which blocks → | Videotron Ltd. | 383F | Vancouver | — |
| 2010-05-07 | 613-407 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2010-05-07 | 613-861 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Cornwall | — |
| 2010-05-07 | 615-970 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | NASHVILLE | TN |
| 2010-05-07 | 647-774 | not yet reported which blocks → | Videotron Ltd. | 383F | Toronto | — |
| 2010-05-07 | 651-346 | 0–9 XXXall 10 · 7 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - MN | 8405 | HASTINGS | MN |
| 2010-05-07 | 780-802 | not yet reported which blocks → | Videotron Ltd. | 383F | Edmonton | — |
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.