NumberResearchRecent prefix assignments
347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026
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
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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2017-03-03 | 772-404 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | VERO BEACH | FL |
| 2017-03-03 | 775-399 | 0–9 XXXall 10 · 3 holders which blocks → | CENTURYLINK COMMUNICATIONS, LLC | 508J | RENO | NV |
| 2017-03-03 | 901-247 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS, INC. | 5562 | MEMPHIS | TN |
| 2017-03-03 | 912-418 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | LUDOWICI | GA |
| 2017-03-03 | 928-929 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → | WIDE VOICE, LLC - AZ | 410H | GILA BEND | AZ |
| 2017-03-03 | 949-403 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LAGUNA BCH | CA |
| 2017-03-02 | 229-597 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY, LLC - GA | 067D | LAKE PARK | GA |
| 2017-03-02 | 320-640 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - MN | 184D | ST CLOUD | MN |
| 2017-03-02 | 701-401 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - ND | 452F | BISMARCK | ND |
| 2017-03-02 | 762-277 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | WINDSTREAM GEORGIA COMMUNICATIONS CORP. | 4332 | CARNESVL | GA |
| 2017-03-02 | 762-689 | 0XXX2XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | WINDSTREAM GEORGIA COMMUNICATIONS CORP. | 4332 | TRION | GA |
| 2017-03-02 | 808-650 | 0–9 XXXall 10 · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - HI | 003J | HONOLULU | HI |
| 2017-03-02 | 859-562 | 0–9 XXXwhole prefix which blocks → | WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON | 9690 | LEXINGTON | KY |
| 2017-03-02 | 972-806 | 0–9 XXXall 10 · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7148 | PLANO | TX |
| 2017-03-01 | 216-608 | 0–9 XXXwhole prefix which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - OH | 7532 | CLEVELAND | OH |
| 2017-03-01 | 218-520 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - MN | 184D | DULUTH | MN |
| 2017-03-01 | 267-748 | 0–9 XXXall 10 · 7 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | PHLDLPHZN3 | PA |
| 2017-03-01 | 365-225 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Palgrave | — |
| 2017-03-01 | 365-235 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Unionville | — |
| 2017-03-01 | 365-245 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Uxbridge | — |
| 2017-03-01 | 365-255 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Richmond Hill | — |
| 2017-03-01 | 365-285 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Aurora | — |
| 2017-03-01 | 365-295 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Bethesda | — |
| 2017-03-01 | 365-345 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Claremont | — |
| 2017-03-01 | 365-375 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Thornhill | — |
| 2017-03-01 | 365-385 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Maple | — |
| 2017-03-01 | 365-395 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Stouffville | — |
| 2017-03-01 | 365-415 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Gormley | — |
| 2017-03-01 | 365-425 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Keswick | — |
| 2017-03-01 | 365-435 | not yet reported which blocks → | IXICA Communications Inc. | 812H | King City | — |
| 2017-03-01 | 365-445 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Kleinburg | — |
| 2017-03-01 | 365-475 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Mount Albert | — |
| 2017-03-01 | 365-485 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Nobleton | — |
| 2017-03-01 | 365-495 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Oak Ridges | — |
| 2017-03-01 | 365-535 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Queensville | — |
| 2017-03-01 | 365-545 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Schomberg | — |
| 2017-03-01 | 365-575 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Sutton | — |
| 2017-03-01 | 365-755 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Newmarket | — |
| 2017-03-01 | 365-775 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Woodbridge | — |
| 2017-03-01 | 365-955 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Markham | — |
| 2017-03-01 | 435-777 | 0–9 XXXall 10 · 8 holders which blocks → | TELNYX LLC | 073H | HEBER CITY | UT |
| 2017-03-01 | 470-612 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA | 6540 | ATLANTA NW | GA |
| 2017-03-01 | 470-638 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA | 6540 | ATLANTA NW | GA |
| 2017-03-01 | 478-242 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - GA | 983E | WADLEY | GA |
| 2017-03-01 | 507-888 | 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → | TELNYX LLC | 073H | LE SUEUR | MN |
| 2017-03-01 | 518-912 | 0–9 XXXall 10 · 4 holders which blocks → | TC SYSTEMS, INC. - NY | 7140 | ALBANY | NY |
| 2017-03-01 | 539-222 | 0–9 XXXall 10 · 3 holders which blocks → | TELNYX LLC | 073H | TULSA | OK |
| 2017-03-01 | 539-333 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | TELNYX LLC | 073H | AFTON | OK |
| 2017-03-01 | 581-764 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Just-de-Bretenieres | — |
| 2017-03-01 | 581-765 | not yet reported which blocks → | Videotron Ltd. | 8306 | Lac-Etchemin | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.