NumberResearchRecent prefix assignments
334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026
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
Apr 2026
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 |
|---|---|---|---|---|---|---|
| 2016-06-02 | 430-252 | 0–9 XXXall 10 · 6 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SULPHURSPG | TX |
| 2016-06-02 | 484-954 | 0–9 XXXall 10 · 6 holders which blocks → | WIDE VOICE, LLC - PA | 218H | ALLENTOWN | PA |
| 2016-06-02 | 641-244 | 0–9 XXXall 10 · 8 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | OTTUMWA | IA |
| 2016-06-02 | 717-803 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LANCASTER | PA |
| 2016-06-02 | 727-626 | 0–9 XXXall 10 · 7 holders which blocks → | WIDE VOICE, LLC - FL | 704G | TARPON SPG | FL |
| 2016-06-02 | 786-776 | 0–9 XXXall 10 · 7 holders which blocks → | WIDE VOICE, LLC - FL | 704G | PERRINE | FL |
| 2016-06-02 | 828-417 | 0–9 XXXall 10 · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NC | 8389 | ASHEVILLE | NC |
| 2016-06-01 | 262-698 | 0–9 XXXall 10 · 6 holders which blocks → | ONVOY, LLC - WI | 225C | BURLINGTON | WI |
| 2016-06-01 | 424-388 | 0–9 XXXall 10 · 7 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MALIBU | CA |
| 2016-06-01 | 438-849 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2016-06-01 | 484-757 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | W CHESTER | PA |
| 2016-06-01 | 587-993 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2016-06-01 | 647-935 | not yet reported which blocks → | Bell Mobility | 6574 | Toronto | — |
| 2016-06-01 | 857-385 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | DORCHESTER | MA |
| 2016-06-01 | 984-213 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | SELMA | NC |
| 2016-05-31 | 236-744 | not yet reported which blocks → | Navigata Communications Limited | 078G | Kitsault | — |
| 2016-05-31 | 236-745 | not yet reported which blocks → | Navigata Communications Limited | 078G | Kitwanga | — |
| 2016-05-31 | 236-746 | not yet reported which blocks → | Navigata Communications Limited | 078G | Klemtu | — |
| 2016-05-31 | 236-747 | not yet reported which blocks → | Navigata Communications Limited | 078G | Lakelse | — |
| 2016-05-31 | 236-748 | not yet reported which blocks → | Navigata Communications Limited | 078G | Port Simpson | — |
| 2016-05-31 | 236-749 | not yet reported which blocks → | Navigata Communications Limited | 078G | Stewart | — |
| 2016-05-31 | 236-750 | not yet reported which blocks → | Navigata Communications Limited | 078G | Telkwa | — |
| 2016-05-31 | 236-751 | not yet reported which blocks → | Navigata Communications Limited | 078G | Topley | — |
| 2016-05-30 | 236-435 | not yet reported which blocks → | Distributel | 081E | Agassiz | — |
| 2016-05-30 | 236-436 | not yet reported which blocks → | Distributel | 081E | Chilliwack | — |
| 2016-05-30 | 236-437 | not yet reported which blocks → | Distributel | 081E | Mission | — |
| 2016-05-30 | 236-438 | not yet reported which blocks → | Distributel | 081E | Rosedale | — |
| 2016-05-30 | 236-439 | not yet reported which blocks → | Distributel | 081E | Sardis | — |
| 2016-05-30 | 236-440 | not yet reported which blocks → | Distributel | 081E | Yarrow | — |
| 2016-05-30 | 236-441 | not yet reported which blocks → | Distributel | 081E | Hemlock Valley | — |
| 2016-05-30 | 236-442 | not yet reported which blocks → | Distributel | 081E | Hope | — |
| 2016-05-30 | 236-443 | not yet reported which blocks → | Distributel | 081E | Yale | — |
| 2016-05-30 | 236-736 | not yet reported which blocks → | Navigata Communications Limited | 078G | Port Edward | — |
| 2016-05-30 | 236-737 | not yet reported which blocks → | Navigata Communications Limited | 078G | Aiyansh | — |
| 2016-05-30 | 236-738 | not yet reported which blocks → | Navigata Communications Limited | 078G | Bella Bella | — |
| 2016-05-30 | 236-739 | not yet reported which blocks → | Navigata Communications Limited | 078G | Greenville | — |
| 2016-05-30 | 236-740 | not yet reported which blocks → | Navigata Communications Limited | 078G | Hartley Bay | — |
| 2016-05-30 | 236-741 | not yet reported which blocks → | Navigata Communications Limited | 078G | Hazelton | — |
| 2016-05-30 | 236-742 | not yet reported which blocks → | Navigata Communications Limited | 078G | Houston | — |
| 2016-05-30 | 236-743 | not yet reported which blocks → | Navigata Communications Limited | 078G | Kincolith | — |
| 2016-05-27 | 236-219 | not yet reported which blocks → | Navigata Communications Limited | 078G | Ashcroft | — |
| 2016-05-27 | 236-220 | not yet reported which blocks → | Navigata Communications Limited | 078G | Aspen Park | — |
| 2016-05-27 | 236-221 | not yet reported which blocks → | Navigata Communications Limited | 078G | Avola | — |
| 2016-05-27 | 236-222 | not yet reported which blocks → | Navigata Communications Limited | 078G | Barriere | — |
| 2016-05-27 | 236-223 | not yet reported which blocks → | Navigata Communications Limited | 078G | Cache Creek | — |
| 2016-05-27 | 236-224 | not yet reported which blocks → | Navigata Communications Limited | 078G | Clearwater | — |
| 2016-05-27 | 236-225 | not yet reported which blocks → | Navigata Communications Limited | 078G | Lillooet | — |
| 2016-05-27 | 236-226 | not yet reported which blocks → | Navigata Communications Limited | 078G | Little Fort | — |
| 2016-05-27 | 236-227 | not yet reported which blocks → | Navigata Communications Limited | 078G | Logan Lake | — |
| 2016-05-27 | 236-228 | not yet reported which blocks → | Navigata Communications Limited | 078G | Lytton | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.