NumberResearchRecent prefix assignments
347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026
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
Quick find in this area code:
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2017-07-24 | 571-651 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | WSNGTNZN17 | VA |
| 2017-07-24 | 657-314 | 0–9 XXXall 10 · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SILVERADO | CA |
| 2017-07-24 | 782-827 | not yet reported which blocks → | Iristel Inc. | 154E | Halifax | — |
| 2017-07-21 | 224-264 | 0–9 XXXwhole prefix which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | 7136 | DESPLAINES | IL |
| 2017-07-21 | 267-883 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PHPHSBZN43 | PA |
| 2017-07-21 | 312-538 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS, INC. | 5562 | CHICGOZN01 | IL |
| 2017-07-21 | 575-530 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NM | 123F | CLOVIS | NM |
| 2017-07-21 | 708-438 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | BLUEISLAND | IL |
| 2017-07-21 | 720-516 | 0–9 XXXwhole prefix which blocks → | QWEST CORPORATION | 9636 | DENVER | CO |
| 2017-07-21 | 732-405 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PERTHAMBOY | NJ |
| 2017-07-21 | 774-346 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | FRAMINGHAM | MA |
| 2017-07-21 | 959-202 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | TORRINGTON | CT |
| 2017-07-20 | 249-699 | not yet reported which blocks → | Iristel Inc. | 154E | Huntsville | — |
| 2017-07-20 | 312-535 | 0–9 XXXall 10 · 2 holders which blocks → | BANDWIDTH.COM CLEC, LLC - IL | 984E | CHICGOZN01 | IL |
| 2017-07-20 | 334-800 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - AL | 604E | GREENSBORO | AL |
| 2017-07-20 | 334-999 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - AL | 604E | HOLTVILLE | AL |
| 2017-07-20 | 365-699 | not yet reported which blocks → | Iristel Inc. | 154E | Markham | — |
| 2017-07-20 | 405-891 | 0XXX1XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OK | 119F | TUTTLE | OK |
| 2017-07-20 | 437-922 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2017-07-20 | 437-925 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2017-07-20 | 437-928 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2017-07-20 | 437-929 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2017-07-20 | 437-980 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2017-07-20 | 438-299 | not yet reported which blocks → | Iristel Inc. | 154E | Ste-Genevieve | — |
| 2017-07-20 | 513-416 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | MIDDLETOWN | OH |
| 2017-07-20 | 539-218 | 0–9 XXXall 10 · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK | 7258 | MUSKOGEE | OK |
| 2017-07-20 | 579-485 | not yet reported which blocks → | Iristel Inc. | 154E | St-Eustache | — |
| 2017-07-20 | 586-519 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - MI | 991E | CENTERLINE | MI |
| 2017-07-20 | 641-505 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - IA | 985E | MANLY | IA |
| 2017-07-20 | 712-340 | 0–9 XXXall 10 · 6 holders which blocks → | BANDWIDTH.COM CLEC, LLC - IA | 985E | ATLANTIC | IA |
| 2017-07-20 | 737-221 | 0–9 XXXall 10 · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | SAN MARCOS | TX |
| 2017-07-20 | 819-709 | not yet reported which blocks → | 9164-3122 Quebec inc | 843D | La Tuque | — |
| 2017-07-20 | 912-357 | 0–9 XXXall 10 · 7 holders which blocks → | BANDWIDTH.COM CLEC, LLC - GA | 983E | STSIMONSIS | GA |
| 2017-07-19 | 236-880 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | New Westminster | — |
| 2017-07-19 | 236-881 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | New Westminster | — |
| 2017-07-19 | 236-883 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | New Westminster | — |
| 2017-07-19 | 236-887 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Abbotsford | — |
| 2017-07-19 | 323-918 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 08 | CA |
| 2017-07-19 | 346-266 | 0–9 XXXall 10 · 2 holders which blocks → | BANDWIDTH.COM CLEC, LLC - TX | 004F | HOUSTON | TX |
| 2017-07-19 | 365-326 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Campbellville | — |
| 2017-07-19 | 365-327 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Freelton | — |
| 2017-07-19 | 365-328 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Georgetown | — |
| 2017-07-19 | 365-329 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Waterdown | — |
| 2017-07-19 | 365-330 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Burlington | — |
| 2017-07-19 | 365-331 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Oakville | — |
| 2017-07-19 | 365-332 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Milton | — |
| 2017-07-19 | 365-882 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Aurora | — |
| 2017-07-19 | 365-885 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Ajax-Pickering | — |
| 2017-07-19 | 365-886 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Ajax-Pickering | — |
| 2017-07-19 | 437-770 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.