NumberResearchRecent prefix assignments
341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026
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 |
|---|---|---|---|---|---|---|
| 2021-11-16 | 845-879 | 0–9 XXXall 10 · 2 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | SPRING VLY | NY |
| 2021-11-16 | 845-886 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NY | 997E | HIGH FALLS | NY |
| 2021-11-16 | 854-225 | 0–9 XXXall 10 · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - SC | 077F | ST GEORGE | SC |
| 2021-11-16 | 856-523 | 0–9 XXXall 10 · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NJ | 118F | SALEM | NJ |
| 2021-11-16 | 873-884 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Sherbrooke | — |
| 2021-11-16 | 873-910 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Asbestos | — |
| 2021-11-16 | 873-920 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Lac-Megantic | — |
| 2021-11-16 | 873-930 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Sawyerville | — |
| 2021-11-16 | 873-940 | not yet reported which blocks → | IXICA Communications Inc. | 812H | St-Sebastien (Frontenac Co.) | — |
| 2021-11-16 | 873-960 | not yet reported which blocks → | IXICA Communications Inc. | 812H | St-Adolphe-de-Dudswell | — |
| 2021-11-16 | 873-970 | not yet reported which blocks → | IXICA Communications Inc. | 812H | St-Malo | — |
| 2021-11-16 | 909-848 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | REDLANDS | CA |
| 2021-11-16 | 939-331 | 0–9 XXXwhole prefix which blocks → | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2021-11-16 | 956-649 | 0–9 XXXall 10 · 2 holders which blocks → | STPCS JOINT VENTURE, LLC | 4290 | LAREDO | TX |
| 2021-11-16 | 980-351 | 0–9 XXXall 10 · 2 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NC | 998E | CLEVELAND | NC |
| 2021-11-16 | 980-372 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NC | 998E | STANLEY | NC |
| 2021-11-16 | 980-383 | 0–9 XXXall 10 · 3 holders which blocks → | TELIAX, INC. | 668J | CHARLOTTE | NC |
| 2021-11-15 | 213-642 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | LSAN DA 14 | CA |
| 2021-11-15 | 213-648 | 0–9 XXXall 10 · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2021-11-15 | 256-942 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | ROGERSVL | AL |
| 2021-11-15 | 442-379 | 0–9 XXXall 10 · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | EL CENTRO | CA |
| 2021-11-15 | 458-279 | 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OR | 076F | FLORENCE | OR |
| 2021-11-15 | 539-263 | 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OK | 119F | HENRYETTA | OK |
| 2021-11-15 | 539-264 | 0XXX1XXX2XXX9XXX · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OK | 119F | KIEFER | OK |
| 2021-11-15 | 559-617 | 0–9 XXXall 10 · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - CA | 981E | KINGSBURG | CA |
| 2021-11-15 | 559-680 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2021-11-15 | 559-714 | 0XXX7XXX9XXX · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - CA | 981E | ORANGECOVE | CA |
| 2021-11-15 | 562-609 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2021-11-15 | 579-510 | not yet reported which blocks → | IXICA Communications Inc. | 812H | St-Cesaire | — |
| 2021-11-15 | 579-707 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Frelighsburg | — |
| 2021-11-15 | 579-710 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Knowlton | — |
| 2021-11-15 | 579-744 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Eastman | — |
| 2021-11-15 | 579-750 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Bromont | — |
| 2021-11-15 | 579-755 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Dunham | — |
| 2021-11-15 | 579-770 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Cowansville | — |
| 2021-11-15 | 579-777 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Granby | — |
| 2021-11-15 | 579-780 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Mansonville | — |
| 2021-11-15 | 615-703 | 0–9 XXXall 10 · 2 holders which blocks → | BANDWIDTH.COM CLEC, LLC - TN | 124F | KINGSTNSPG | TN |
| 2021-11-15 | 626-597 | 0–9 XXXall 10 · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | ALHAMBRA | CA |
| 2021-11-15 | 650-643 | 0–9 XXXall 10 · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | PALO ALTO | CA |
| 2021-11-15 | 657-541 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2021-11-15 | 657-739 | 0–9 XXXall 10 · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | ANAHEIM | CA |
| 2021-11-15 | 661-936 | 0–9 XXXwhole prefix which blocks → | T-MOBILE USA, INC. | 6529 | PLDL PLDL | CA |
| 2021-11-15 | 669-319 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | SNJS WEST | CA |
| 2021-11-15 | 712-499 | 0–9 XXXall 10 · 3 holders which blocks → | FRACTEL, LLC | 965H | SIOUX CITY | IA |
| 2021-11-15 | 716-561 | 0XXX1XXX5XXX6XXX9XXX · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NY | 997E | SPRINGVL | NY |
| 2021-11-15 | 754-274 | 0–9 XXXwhole prefix which blocks → | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | FTLAUDERDL | FL |
| 2021-11-15 | 754-275 | 0–9 XXXwhole prefix which blocks → | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | HOLLYWOOD | FL |
| 2021-11-15 | 806-904 | 9XXX which blocks → | ONVOY SPECTRUM, LLC | 624H | BROWNFIELD | TX |
| 2021-11-15 | 840-212 | 0–9 XXXall 10 · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | CHINO | CA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.