NumberResearchRecent prefix assignments
354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026
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
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2022-10-10 | 845-912 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC- NY | 384C | PLEASATVLY | NY |
| 2022-10-10 | 858-331 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CHULAVISTA | CA |
| 2022-10-10 | 914-201 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC- NY | 384C | OSSINING | NY |
| 2022-10-10 | 929-651 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | NWYRCYZN06 | NY |
| 2022-10-10 | 934-236 | 0–9 XXXall 10 · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | RIVERHEAD | NY |
| 2022-10-10 | 939-351 | 0–9 XXXwhole prefix which blocks → | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2022-10-10 | 948-204 | 0–9 XXXall 10 · 4 holders which blocks → | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | NRFOLKZON3 | VA |
| 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 | — |
| 2022-10-07 | 505-531 | 0–9 XXXall 10 · 4 holders which blocks → | NUSO, LLC | 732J | SANTA FE | NM |
| 2022-10-07 | 506-772 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Stanley | — |
| 2022-10-07 | 506-868 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Boiestown | — |
| 2022-10-07 | 640-235 | 0–9 XXXall 10 · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | LAWRENCEVL | NJ |
| 2022-10-06 | 240-962 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | LAUREL236 | MD |
| 2022-10-06 | 249-545 | not yet reported which blocks → | ExaTEL Inc. | 3147 | Smooth Rock Falls | — |
| 2022-10-06 | 302-267 | 0–9 XXXall 10 · 5 holders which blocks → | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | WILMINGTON | DE |
| 2022-10-06 | 330-228 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANTUA | OH |
| 2022-10-06 | 437-577 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2022-10-06 | 437-655 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2022-10-06 | 437-677 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2022-10-06 | 437-699 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2022-10-06 | 437-722 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2022-10-06 | 437-755 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2022-10-06 | 516-201 | 0–9 XXXall 10 · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | NASSAUZN02 | NY |
| 2022-10-06 | 548-447 | not yet reported which blocks → | Fibernetics Corporation | 464D | Norwich | — |
| 2022-10-06 | 548-449 | not yet reported which blocks → | Fibernetics Corporation | 464D | Otterville | — |
| 2022-10-06 | 548-450 | not yet reported which blocks → | Fibernetics Corporation | 464D | Princeton | — |
| 2022-10-06 | 548-451 | not yet reported which blocks → | Fibernetics Corporation | 464D | Thamesford | — |
| 2022-10-06 | 561-890 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | WPALMBEACH | FL |
| 2022-10-06 | 603-697 | 0–9 XXXall 10 · 3 holders which blocks → | COMCAST IP PHONE, LLC | 318J | DOVER | NH |
| 2022-10-06 | 682-395 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | ARLINGTON | TX |
| 2022-10-06 | 726-230 | 0–9 XXXall 10 · 5 holders which blocks → | T-MOBILE USA, INC. | 6529 | SANANTONIO | TX |
| 2022-10-06 | 737-341 | 0–9 XXXwhole prefix which blocks → | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2022-10-06 | 737-342 | 0–9 XXXwhole prefix which blocks → | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2022-10-06 | 765-788 | 1XXX8XXX · 2 holders which blocks → | NUSO, LLC | 732J | ALEXANDRIA | IN |
| 2022-10-06 | 839-223 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | 6398 | COLUMBIA | SC |
| 2022-10-06 | 839-224 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | 6398 | COLUMBIA | SC |
| 2022-10-06 | 858-438 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| 2022-10-06 | 904-865 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | JACKSONVL | FL |
| 2022-10-06 | 934-233 | 0–9 XXXwhole prefix which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | AMITYVILLE | NY |
| 2022-10-06 | 934-235 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | RIVERHEAD | NY |
| 2022-10-06 | 941-299 | 0–9 XXXall 10 · 3 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | SARASOTA | FL |
| 2022-10-06 | 945-272 | 0–9 XXXwhole prefix which blocks → | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX |
| 2022-10-06 | 945-273 | 0–9 XXXwhole prefix which blocks → | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX |
| 2022-10-06 | 945-274 | 0–9 XXXwhole prefix which blocks → | T-MOBILE USA, INC. | 6529 | MCKINNEY | TX |
| 2022-10-05 | 437-429 | not yet reported which blocks → | Bell Mobility | 6574 | Toronto | — |
| 2022-10-05 | 548-437 | not yet reported which blocks → | Fibernetics Corporation | 464D | Brownsville | — |
| 2022-10-05 | 548-438 | not yet reported which blocks → | Fibernetics Corporation | 464D | Drumbo | — |
| 2022-10-05 | 548-439 | not yet reported which blocks → | Fibernetics Corporation | 464D | Eastwood | — |
| 2022-10-05 | 548-441 | not yet reported which blocks → | Fibernetics Corporation | 464D | Embro | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.