NumberResearchRecent prefix assignments
338 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
Aug 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 |
|---|---|---|---|---|---|---|
| 2022-05-16 | 236-806 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Sardis | — |
| 2022-05-16 | 236-951 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Yale | — |
| 2022-05-16 | 458-301 | 0XXX1XXX · 2 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | SELMA | OR |
| 2022-05-16 | 470-961 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA | 6540 | ATLANTA NE | GA |
| 2022-05-16 | 672-201 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Agassiz | — |
| 2022-05-16 | 672-282 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Chilliwack | — |
| 2022-05-16 | 672-283 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Hemlock Valley | — |
| 2022-05-16 | 828-480 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HICKORY | NC |
| 2022-05-16 | 928-867 | 0–9 XXXall 10 · 4 holders which blocks → | COMMIO, LLC | 939H | KINGMAN | AZ |
| 2022-05-13 | 279-220 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SCRM MAIN | CA |
| 2022-05-13 | 318-944 | 0–9 XXXall 10 · 5 holders which blocks → | TERRA NOVA TELECOM INC. | 145J | SHREVEPORT | LA |
| 2022-05-13 | 470-954 | 0–9 XXXall 10 · 2 holders which blocks → | POWERTEL ATLANTA LICENSES, INC. | 7473 | ATLANTA | GA |
| 2022-05-13 | 470-960 | 0–9 XXXall 10 · 3 holders which blocks → | POWERTEL ATLANTA LICENSES, INC. | 7473 | ATLANTA | GA |
| 2022-05-13 | 470-962 | 0–9 XXXwhole prefix which blocks → | POWERTEL ATLANTA LICENSES, INC. | 7473 | ATLANTA | GA |
| 2022-05-13 | 470-965 | 0–9 XXXwhole prefix which blocks → | POWERTEL ATLANTA LICENSES, INC. | 7473 | WINDER | GA |
| 2022-05-13 | 470-992 | 0–9 XXXwhole prefix which blocks → | POWERTEL ATLANTA LICENSES, INC. | 7473 | WINDER | GA |
| 2022-05-13 | 512-316 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GEORGETOWN | TX |
| 2022-05-13 | 612-482 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - MN | 184D | TWINCITIES | MN |
| 2022-05-13 | 657-589 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2022-05-13 | 734-608 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LIVONIA | MI |
| 2022-05-13 | 787-990 | 0–9 XXXwhole prefix which blocks → | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2022-05-13 | 830-233 | 0XXX3XXX8XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | POTEET | TX |
| 2022-05-13 | 917-437 | 0–9 XXXwhole prefix which blocks → | ONVOY SPECTRUM, LLC | 624H | NWYRCYZN01 | NY |
| 2022-05-13 | 945-257 | 0–9 XXXwhole prefix which blocks → | T-MOBILE USA, INC. | 6529 | FRISCO | TX |
| 2022-05-13 | 947-733 | 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | DRAYTON PL | MI |
| 2022-05-12 | 289-353 | not yet reported which blocks → | IXICA Communications Inc. | 812H | St. Catharines-Thorold | — |
| 2022-05-12 | 334-847 | 0–9 XXXall 10 · 4 holders which blocks → | POWERTEL BIRMINGHAM LICENSES, INC. | 7475 | TUSKEGEE | AL |
| 2022-05-12 | 438-573 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2022-05-12 | 501-946 | 0–9 XXXall 10 · 4 holders which blocks → | FRACTEL, LLC | 965H | BENTON | AR |
| 2022-05-12 | 672-478 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Abbotsford | — |
| 2022-05-12 | 912-669 | 0–9 XXXall 10 · 4 holders which blocks → | POWERTEL ATLANTA LICENSES, INC. | 7473 | HINESVILLE | GA |
| 2022-05-12 | 934-231 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | RIVERHEAD | NY |
| 2022-05-11 | 224-446 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | DESPLAINES | IL |
| 2022-05-11 | 224-461 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | DEERFIELD | IL |
| 2022-05-11 | 249-425 | not yet reported which blocks → | Fibernetics Corporation | 464D | Alban | — |
| 2022-05-11 | 249-426 | not yet reported which blocks → | Fibernetics Corporation | 464D | Markstay | — |
| 2022-05-11 | 249-427 | not yet reported which blocks → | Fibernetics Corporation | 464D | St. Charles | — |
| 2022-05-11 | 249-428 | not yet reported which blocks → | Fibernetics Corporation | 464D | Warren | — |
| 2022-05-11 | 368-209 | not yet reported which blocks → | Iristel Inc. | 154E | Hinton | — |
| 2022-05-11 | 437-412 | not yet reported which blocks → | Bell Mobility | 6574 | Toronto | — |
| 2022-05-11 | 437-413 | not yet reported which blocks → | Bell Mobility | 6574 | Toronto | — |
| 2022-05-11 | 437-414 | not yet reported which blocks → | Bell Mobility | 6574 | Toronto | — |
| 2022-05-11 | 445-247 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PHLDLPHZN2 | PA |
| 2022-05-11 | 445-289 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PHLDLPHZN1 | PA |
| 2022-05-11 | 464-204 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CICERO | IL |
| 2022-05-11 | 484-609 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PHPHSBZN10 | PA |
| 2022-05-11 | 754-286 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HOLLYWOOD | FL |
| 2022-05-11 | 774-523 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WEBSTER | MA |
| 2022-05-11 | 801-630 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - UT | 871E | BOUNTIFUL | UT |
| 2022-05-11 | 801-909 | 0–9 XXXwhole prefix which blocks → | ONVOY SPECTRUM, LLC | 624H | BOUNTIFUL | UT |
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.