NumberResearchRecent prefix assignments
334 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
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2021-10-04 | 463-673 | 0–9 XXXall 10 · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | FISHERS | IN |
| 2021-10-04 | 479-465 | 1XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → | ONVOY, LLC - AR | 348F | ATKINS | AR |
| 2021-10-04 | 479-482 | 0XXX1XXX2XXX3XXX4XXX · 4 holders which blocks → | ONVOY, LLC - AR | 348F | DOVER | AR |
| 2021-10-04 | 479-483 | 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → | ONVOY, LLC - AR | 348F | WINSLOW | AR |
| 2021-10-04 | 501-471 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FERNDALE | AR |
| 2021-10-04 | 501-497 | 0–9 XXXall 10 · 8 holders which blocks → | ONVOY, LLC - AR | 348F | CONWAY | AR |
| 2021-10-04 | 517-378 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | POTTERVL | MI |
| 2021-10-04 | 520-592 | 0–9 XXXall 10 · 4 holders which blocks → | TELNYX LLC | 073H | NOGALES | AZ |
| 2021-10-04 | 602-835 | 0–9 XXXall 10 · 4 holders which blocks → | TELNYX LLC | 073H | PHOENIX | AZ |
| 2021-10-04 | 620-558 | 0XXX1XXX5XXX8XXX · 4 holders which blocks → | CSC WIRELESS, LLC | 425J | RIVERTON | KS |
| 2021-10-04 | 623-278 | 0–9 XXXall 10 · 3 holders which blocks → | TELNYX LLC | 073H | PHOENIX | AZ |
| 2021-10-04 | 681-360 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HNTNGTNZN1 | WV |
| 2021-10-04 | 742-989 | not yet reported which blocks → | Beanfield Technologies Inc. | 575G | Aurora | — |
| 2021-10-04 | 742-990 | not yet reported which blocks → | Beanfield Technologies Inc. | 575G | Bethesda | — |
| 2021-10-04 | 742-991 | not yet reported which blocks → | Beanfield Technologies Inc. | 575G | Bolton | — |
| 2021-10-04 | 742-992 | not yet reported which blocks → | Beanfield Technologies Inc. | 575G | Claremont | — |
| 2021-10-04 | 742-993 | not yet reported which blocks → | Beanfield Technologies Inc. | 575G | Gormley | — |
| 2021-10-04 | 742-994 | not yet reported which blocks → | Beanfield Technologies Inc. | 575G | Keswick | — |
| 2021-10-04 | 742-995 | not yet reported which blocks → | Beanfield Technologies Inc. | 575G | King City | — |
| 2021-10-04 | 742-996 | not yet reported which blocks → | Beanfield Technologies Inc. | 575G | Kleinburg | — |
| 2021-10-04 | 742-997 | not yet reported which blocks → | Beanfield Technologies Inc. | 575G | Maple | — |
| 2021-10-04 | 742-998 | not yet reported which blocks → | Beanfield Technologies Inc. | 575G | Mount Albert | — |
| 2021-10-04 | 782-778 | not yet reported which blocks → | TELUS Mobility | 8303 | Truro | — |
| 2021-10-04 | 782-779 | not yet reported which blocks → | TELUS Mobility | 8303 | Truro | — |
| 2021-10-04 | 782-780 | not yet reported which blocks → | TELUS Mobility | 8303 | Truro | — |
| 2021-10-04 | 782-781 | not yet reported which blocks → | TELUS Mobility | 8303 | Truro | — |
| 2021-10-04 | 862-383 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PASSAIC | NJ |
| 2021-10-04 | 984-840 | 0XXX1XXX2XXX3XXX4XXX · 4 holders which blocks → | SKYE TELECOM LLC DBA SKYETEL | 622J | VIRGILINA | NC |
| 2021-10-01 | 279-213 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - CA | 981E | LINCOLN | CA |
| 2021-10-01 | 279-214 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - CA | 981E | FAIR OAKS | CA |
| 2021-10-01 | 307-387 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - WY | 081F | GILLETTE | WY |
| 2021-10-01 | 364-597 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | CANEYVILLE | KY |
| 2021-10-01 | 367-993 | not yet reported which blocks → | TELUS Mobility | 8303 | Alma | — |
| 2021-10-01 | 442-844 | 4XXX8XXX · 2 holders which blocks → | SKYE TELECOM LLC DBA SKYETEL | 622J | SANDY VLLY | CA |
| 2021-10-01 | 445-217 | 0–9 XXXall 10 · 2 holders which blocks → | VONAGE AMERICA LLC | 197D | PHPHSBZN38 | PA |
| 2021-10-01 | 509-603 | 0–9 XXXwhole prefix which blocks → | CENTURYLINK COMMUNICATIONS, LLC | 508J | SPOKANE | WA |
| 2021-10-01 | 530-850 | 0XXX8XXX · 2 holders which blocks → | SKYE TELECOM LLC DBA SKYETEL | 622J | VERDI | CA |
| 2021-10-01 | 531-274 | 0–9 XXXall 10 · 3 holders which blocks → | UNITED STATES CELLULAR - NE | 6263 | WAYNE | NE |
| 2021-10-01 | 534-253 | 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → | TON80 COMMUNICATIONS, LLC | 516J | MARSHFIELD | WI |
| 2021-10-01 | 579-540 | not yet reported which blocks → | Cooptel | 818D | Ste-Victoire | — |
| 2021-10-01 | 579-541 | not yet reported which blocks → | Cooptel | 818D | St-Ours | — |
| 2021-10-01 | 579-543 | not yet reported which blocks → | Cooptel | 818D | St-Pie | — |
| 2021-10-01 | 579-544 | not yet reported which blocks → | Cooptel | 818D | St-Damase | — |
| 2021-10-01 | 579-545 | not yet reported which blocks → | Cooptel | 818D | Ste-Madeleine | — |
| 2021-10-01 | 579-546 | not yet reported which blocks → | Cooptel | 818D | St-Thomas-d'Aquin | — |
| 2021-10-01 | 579-547 | not yet reported which blocks → | Cooptel | 818D | St-Zephirin | — |
| 2021-10-01 | 616-353 | 0XXX1XXX5XXX · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - MI | 991E | SAND LAKE | MI |
| 2021-10-01 | 719-715 | 0–9 XXXall 10 · 6 holders which blocks → | SKYE TELECOM LLC DBA SKYETEL | 622J | COLORDOSPG | CO |
| 2021-10-01 | 814-298 | 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | SKYE TELECOM LLC DBA SKYETEL | 622J | ERIE | PA |
| 2021-10-01 | 878-259 | 0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks → | COMMIO, LLC | 939H | EXPORT | PA |
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.