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
Jul 2026
Jun 2026
May 2026
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Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2022-06-16 | 807-820 | not yet reported which blocks → | TBayTel | 988H | Terrace Bay | — |
| 2022-06-15 | 239-385 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | NO NAPLES | FL |
| 2022-06-15 | 260-314 | 1XXX which blocks → | LIGTEL COMMUNICATIONS, INC. - IN | 5942 | WAWAKA | IN |
| 2022-06-15 | 260-315 | 1XXX which blocks → | LIGTEL COMMUNICATIONS, INC. - IN | 5942 | TOPEKA | IN |
| 2022-06-15 | 326-953 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | PIQUA | OH |
| 2022-06-15 | 412-870 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | PTGSBNZN15 | PA |
| 2022-06-15 | 430-229 | 1XXX9XXX · 2 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | GLADEBRNCH | TX |
| 2022-06-15 | 713-281 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | RICHMNRNBG | TX |
| 2022-06-15 | 715-987 | 7XXX which blocks → | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | SPRING VLY | WI |
| 2022-06-15 | 910-957 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - NC | 638E | LUMBERTON | NC |
| 2022-06-15 | 941-233 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 6502 | SARASOTA | FL |
| 2022-06-15 | 941-291 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PTCHARLOTT | FL |
| 2022-06-14 | 228-828 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | BILOXI | MS |
| 2022-06-14 | 463-275 | 0–9 XXXall 10 · 3 holders which blocks → | COMCAST IP PHONE, LLC | 318J | PLAINFIELD | IN |
| 2022-06-14 | 470-964 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - GA | 067D | ATLANTA | GA |
| 2022-06-14 | 551-350 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY, LLC - NJ | 637C | JERSEYCITY | NJ |
| 2022-06-14 | 602-851 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| 2022-06-14 | 623-287 | 0–9 XXXall 10 · 2 holders which blocks → | COMMIO, LLC | 939H | PHOENIX | AZ |
| 2022-06-14 | 719-618 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | CANON CITY | CO |
| 2022-06-14 | 725-275 | 0–9 XXXwhole prefix which blocks → | T-MOBILE USA, INC. | 6529 | LAS VEGAS | NV |
| 2022-06-14 | 753-222 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Carleton Place | — |
| 2022-06-14 | 753-300 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Richmond | — |
| 2022-06-14 | 753-333 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Ottawa-Hull | — |
| 2022-06-14 | 753-444 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Kanata-Stittsville | — |
| 2022-06-14 | 753-666 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Kemptville | — |
| 2022-06-14 | 753-777 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Ottawa-Hull | — |
| 2022-06-14 | 753-888 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Cumberland | — |
| 2022-06-14 | 802-410 | 0XXX1XXX · 2 holders which blocks → | COMCAST IP PHONE, LLC | 318J | HUBBARDTON | VT |
| 2022-06-14 | 802-501 | 1XXX which blocks → | COMCAST IP PHONE, LLC | 318J | WHITING | VT |
| 2022-06-14 | 802-506 | 1XXX which blocks → | COMCAST IP PHONE, LLC | 318J | ORWELL | VT |
| 2022-06-14 | 931-366 | 0XXX6XXX9XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | COOKEVL SO | TN |
| 2022-06-13 | 445-261 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MORRISVL | PA |
| 2022-06-13 | 548-655 | not yet reported which blocks → | Quadro Communications Co-operative Inc. | 004G | Tavistock | — |
| 2022-06-13 | 580-865 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | PONCA CITY | OK |
| 2022-06-13 | 581-459 | not yet reported which blocks → | Bell Mobility | 6574 | Quebec | — |
| 2022-06-13 | 605-308 | 0XXX5XXX9XXX · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | NOSIOUX CY | SD |
| 2022-06-13 | 753-200 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Osgoode | — |
| 2022-06-13 | 753-400 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Chesterville | — |
| 2022-06-13 | 753-500 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Alfred | — |
| 2022-06-13 | 753-600 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Almonte | — |
| 2022-06-13 | 753-700 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Manotick | — |
| 2022-06-13 | 753-800 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Arnprior | — |
| 2022-06-13 | 753-900 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Constance Bay | — |
| 2022-06-13 | 753-999 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Gloucester | — |
| 2022-06-13 | 769-629 | 0XXX6XXX which blocks → | ONVOY, LLC - MS | 719E | JANICE | MS |
| 2022-06-10 | 224-464 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WHEELING | IL |
| 2022-06-10 | 239-382 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - FL | 937C | BONITA SPG | FL |
| 2022-06-10 | 361-292 | 0–9 XXXall 10 · 3 holders which blocks → | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | C CHRISTI | TX |
| 2022-06-10 | 364-464 | 6XXX which blocks → | ONVOY SPECTRUM, LLC | 624H | OWENSBORO | KY |
| 2022-06-10 | 364-643 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | BOWLNGGREN | KY |
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.