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 |
|---|---|---|---|---|---|---|
| 2022-08-09 | 618-858 | 0XXX1XXX7XXX · 3 holders which blocks → | BOOST SUBSCRIBERCO L.L.C. | 490J | AVISTON | IL |
| 2022-08-09 | 618-860 | 0XXX1XXX6XXX7XXX8XXX · 4 holders which blocks → | BOOST SUBSCRIBERCO L.L.C. | 490J | GERMANTOWN | IL |
| 2022-08-09 | 618-862 | 0XXX which blocks → | BOOST SUBSCRIBERCO L.L.C. | 490J | ST LIBORY | IL |
| 2022-08-09 | 682-383 | 0–9 XXXall 10 · 4 holders which blocks → | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 0701 | NRICHLDHLS | TX |
| 2022-08-09 | 683-200 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Waubaushene | — |
| 2022-08-09 | 683-300 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Stroud | — |
| 2022-08-09 | 683-333 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Lafontaine | — |
| 2022-08-09 | 683-400 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Severn Bridge | — |
| 2022-08-09 | 683-444 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Cookstown | — |
| 2022-08-09 | 683-500 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Oro | — |
| 2022-08-09 | 683-600 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Elmvale | — |
| 2022-08-09 | 683-666 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Bluewater | — |
| 2022-08-09 | 707-916 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - CA | 649C | ARCATA | CA |
| 2022-08-09 | 707-936 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - CA | 649C | FRFLD-SUIS | CA |
| 2022-08-09 | 707-990 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - CA | 649C | VALLEJO | CA |
| 2022-08-09 | 716-497 | 0XXX1XXX4XXX5XXX · 2 holders which blocks → | ONVOY, LLC- NY | 384C | ELLINGTON | NY |
| 2022-08-09 | 726-228 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | SANANTONIO | TX |
| 2022-08-09 | 727-598 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | CLEARWATER | FL |
| 2022-08-09 | 727-603 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 6502 | CLEARWATER | FL |
| 2022-08-09 | 770-520 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | ADAIRSVL | GA |
| 2022-08-09 | 770-588 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | CARTERSVL | GA |
| 2022-08-09 | 770-764 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | VILLA RICA | GA |
| 2022-08-09 | 772-271 | 0–9 XXXall 10 · 2 holders which blocks → | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | PTST LUCIE | FL |
| 2022-08-09 | 786-882 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - FL | 937C | PERRINE | FL |
| 2022-08-09 | 786-883 | 0–9 XXXall 10 · 6 holders which blocks → | BANDWIDTH.COM CLEC, LLC - FL | 982E | KEYS | FL |
| 2022-08-09 | 786-884 | 0–9 XXXall 10 · 2 holders which blocks → | BANDWIDTH.COM CLEC, LLC - FL | 982E | NORTH DADE | FL |
| 2022-08-09 | 786-885 | 0–9 XXXall 10 · 2 holders which blocks → | BANDWIDTH.COM CLEC, LLC - FL | 982E | MIAMI | FL |
| 2022-08-09 | 804-671 | 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → | BOOST SUBSCRIBERCO L.L.C. | 490J | PORT ROYAL | VA |
| 2022-08-09 | 804-707 | 0–9 XXXall 10 · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - VA | 7238 | MIDLOTHIAN | VA |
| 2022-08-09 | 804-753 | 0–9 XXXall 10 · 4 holders which blocks → | BOOST SUBSCRIBERCO L.L.C. | 490J | KINGWILLIM | VA |
| 2022-08-09 | 804-810 | 0XXX1XXX8XXX9XXX · 2 holders which blocks → | BOOST SUBSCRIBERCO L.L.C. | 490J | CALLAO | VA |
| 2022-08-09 | 817-661 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WEATHERFD | TX |
| 2022-08-09 | 920-708 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ALGOMA | WI |
| 2022-08-09 | 930-380 | 0XXX which blocks → | COMMIO, LLC | 939H | BLOOMINGTN | IN |
| 2022-08-09 | 945-264 | 0–9 XXXwhole prefix which blocks → | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX |
| 2022-08-09 | 945-265 | 0–9 XXXwhole prefix which blocks → | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX |
| 2022-08-09 | 945-266 | 0–9 XXXwhole prefix which blocks → | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX |
| 2022-08-08 | 308-466 | 1XXX9XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE | 5807 | FRANKLIN | NE |
| 2022-08-08 | 314-986 | 0–9 XXXall 10 · 6 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO |
| 2022-08-08 | 314-987 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - MO | 093F | MEHLVILLE | MO |
| 2022-08-08 | 314-998 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
| 2022-08-08 | 364-214 | 0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks → | BOOST SUBSCRIBERCO L.L.C. | 490J | BEE SPRING | KY |
| 2022-08-08 | 506-287 | not yet reported which blocks → | Bragg Communications Inc. | 4878 | Edmundston | — |
| 2022-08-08 | 557-200 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - MO | 093F | LADUE | MO |
| 2022-08-08 | 557-467 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - MO | 093F | ST LOUIS | MO |
| 2022-08-08 | 753-721 | not yet reported which blocks → | Fibernetics Corporation | 464D | Elgin | — |
| 2022-08-08 | 753-722 | not yet reported which blocks → | Fibernetics Corporation | 464D | Lanark | — |
| 2022-08-08 | 753-723 | not yet reported which blocks → | Fibernetics Corporation | 464D | Maberly | — |
| 2022-08-08 | 753-724 | not yet reported which blocks → | Fibernetics Corporation | 464D | McDonalds Corners | — |
| 2022-08-08 | 753-725 | not yet reported which blocks → | Fibernetics Corporation | 464D | Perth | — |
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.