NumberResearchRecent prefix assignments
357 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026
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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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2022-08-11 | 343-736 | not yet reported which blocks → | Distributel | 082E | Madoc | — |
| 2022-08-11 | 343-738 | not yet reported which blocks → | Distributel | 082E | Marmora | — |
| 2022-08-11 | 343-739 | not yet reported which blocks → | Distributel | 082E | Northbrook | — |
| 2022-08-11 | 343-740 | not yet reported which blocks → | Distributel | 082E | Picton | — |
| 2022-08-11 | 343-741 | not yet reported which blocks → | Distributel | 082E | Stirling | — |
| 2022-08-11 | 343-742 | not yet reported which blocks → | Distributel | 082E | Trenton | — |
| 2022-08-11 | 343-743 | not yet reported which blocks → | Distributel | 082E | Tweed | — |
| 2022-08-11 | 343-745 | not yet reported which blocks → | Distributel | 082E | Wellington | — |
| 2022-08-11 | 484-967 | 0XXX1XXX2XXX3XXX8XXX9XXX · 2 holders which blocks → | COMCAST IP PHONE, LLC | 318J | GLENMOORE | PA |
| 2022-08-11 | 551-553 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - NJ | 637C | ORADELL | NJ |
| 2022-08-11 | 683-777 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Lefroy | — |
| 2022-08-11 | 683-800 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Midland | — |
| 2022-08-11 | 683-888 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Sebright | — |
| 2022-08-11 | 683-900 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Borden-Angus | — |
| 2022-08-11 | 683-999 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Stayner | — |
| 2022-08-11 | 785-997 | 0–9 XXXall 10 · 4 holders which blocks → | BOOST SUBSCRIBERCO L.L.C. | 490J | LAWRENCE | KS |
| 2022-08-10 | 220-235 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | ZANESVILLE | OH |
| 2022-08-10 | 229-290 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA | 6540 | BAINBRIDGE | GA |
| 2022-08-10 | 251-407 | 0–9 XXXall 10 · 3 holders which blocks → | ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC | 6916 | FOLEY | AL |
| 2022-08-10 | 313-419 | 0–9 XXXwhole prefix which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | DETROITZN3 | MI |
| 2022-08-10 | 448-207 | 0–9 XXXwhole prefix which blocks → | POWERTEL JACKSONVILLE LICENSES, INC. | 7472 | BONIFAY | FL |
| 2022-08-10 | 505-527 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM | 6573 | ALBUQURQUE | NM |
| 2022-08-10 | 520-649 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | TUCSON | AZ |
| 2022-08-10 | 520-710 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | TUCSON | AZ |
| 2022-08-10 | 559-767 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CLOVIS | CA |
| 2022-08-10 | 582-216 | 0XXX which blocks → | BOOST SUBSCRIBERCO L.L.C. | 490J | STATE LINE | PA |
| 2022-08-10 | 585-630 | 0–9 XXXall 10 · 3 holders which blocks → | NUSO, LLC | 732J | BATAVIA | NY |
| 2022-08-10 | 607-416 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | NUSO, LLC | 732J | ENDICOTT | NY |
| 2022-08-10 | 612-491 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | TWINCITIES | MN |
| 2022-08-10 | 657-614 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2022-08-10 | 838-257 | 0–9 XXXall 10 · 5 holders which blocks → | NUSO, LLC | 732J | ATHENS | NY |
| 2022-08-10 | 845-909 | 1XXX9XXX · 2 holders which blocks → | NUSO, LLC | 732J | NORTHCLOVE | NY |
| 2022-08-10 | 864-793 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | LAURESRURL | SC |
| 2022-08-10 | 864-820 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | GREENVILLE | SC |
| 2022-08-10 | 914-543 | 0–9 XXXall 10 · 3 holders which blocks → | NUSO, LLC | 732J | MT VERNON | NY |
| 2022-08-10 | 931-370 | 0XXX1XXX · 2 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | NEWJHNSNVL | TN |
| 2022-08-09 | 209-997 | 0XXX7XXX9XXX · 3 holders which blocks → | BOOST SUBSCRIBERCO L.L.C. | 490J | FARMINGTON | CA |
| 2022-08-09 | 220-232 | 0–9 XXXall 10 · 2 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | ATHENS | OH |
| 2022-08-09 | 220-233 | 0XXX3XXX9XXX · 3 holders which blocks → | BOOST SUBSCRIBERCO L.L.C. | 490J | RESACA | OH |
| 2022-08-09 | 224-476 | 0–9 XXXall 10 · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | 7136 | DESPLAINES | IL |
| 2022-08-09 | 224-481 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WHEELING | IL |
| 2022-08-09 | 346-578 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | LANGHAMCRK | TX |
| 2022-08-09 | 409-490 | 0XXX1XXX6XXX9XXX · 4 holders which blocks → | BOOST SUBSCRIBERCO L.L.C. | 490J | ANAHUAC | TX |
| 2022-08-09 | 509-298 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MOSES LAKE | WA |
| 2022-08-09 | 513-840 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - OH | 464C | CINCINNATI | OH |
| 2022-08-09 | 531-286 | 0XXX1XXX2XXX4XXX8XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NE | 3233 | OAKLAND | NE |
| 2022-08-09 | 561-875 | 0–9 XXXwhole prefix which blocks → | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | WPALMBEACH | FL |
| 2022-08-09 | 561-884 | 0–9 XXXwhole prefix which blocks → | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | WPALMBEACH | FL |
| 2022-08-09 | 564-215 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | PT ANGELES | WA |
| 2022-08-09 | 618-856 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CENTRALIA | IL |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.