NumberResearchRecent prefix assignments
360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026
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
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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 |
|---|---|---|---|---|---|---|
| 2021-08-10 | 845-933 | 0–9 XXXall 10 · 8 holders which blocks → | FRACTEL, LLC | 965H | KINGSTON | NY |
| 2021-08-10 | 858-765 | 0–9 XXXall 10 · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7147 | LA JOLLA | CA |
| 2021-08-10 | 862-376 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PASSAIC | NJ |
| 2021-08-10 | 870-839 | 0–9 XXXall 10 · 6 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MARION | AR |
| 2021-08-10 | 914-567 | 4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | FRACTEL, LLC | 965H | ARMONK VLG | NY |
| 2021-08-10 | 949-868 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - CA | 649C | IRVINE | CA |
| 2021-08-10 | 971-405 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OR | 076F | BEAVERTON | OR |
| 2021-08-10 | 971-406 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OR | 076F | WOODBURN | OR |
| 2021-08-10 | 986-236 | 0–9 XXXall 10 · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - ID | 808G | BOISE | ID |
| 2021-08-09 | 209-998 | 0–9 XXXall 10 · 6 holders which blocks → | FRACTEL, LLC | 965H | MANTECA | CA |
| 2021-08-09 | 438-702 | not yet reported which blocks → | Iristel Inc. | 154E | Ile-Perrot | — |
| 2021-08-09 | 484-982 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | PA |
| 2021-08-09 | 520-554 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TUCSON | AZ |
| 2021-08-09 | 520-565 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TUCSON | AZ |
| 2021-08-09 | 639-383 | not yet reported which blocks → | Iristel Inc. | 154E | Outlook | — |
| 2021-08-09 | 804-634 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | DAWN | VA |
| 2021-08-09 | 825-709 | not yet reported which blocks → | Iristel Inc. | 154E | Lethbridge | — |
| 2021-08-09 | 873-710 | not yet reported which blocks → | Iristel Inc. | 154E | Ottawa-Hull | — |
| 2021-08-06 | 260-284 | 2XXX4XXX5XXX which blocks → | ONVOY, LLC - IN | 097D | TRI LAKES | IN |
| 2021-08-06 | 331-277 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LOMBARD | IL |
| 2021-08-06 | 332-251 | 0–9 XXXall 10 · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NY | 997E | NWYRCYZN01 | NY |
| 2021-08-06 | 431-903 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Holland | — |
| 2021-08-06 | 431-904 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Cypress River | — |
| 2021-08-06 | 438-609 | not yet reported which blocks → | Iristel Inc. | 154E | Lachine | — |
| 2021-08-06 | 506-409 | not yet reported which blocks → | Iristel Inc. | 154E | Campbellton | — |
| 2021-08-06 | 639-466 | not yet reported which blocks → | TELUS Mobility | 8303 | Oxbow | — |
| 2021-08-06 | 639-467 | not yet reported which blocks → | TELUS Mobility | 8303 | Carlyle | — |
| 2021-08-06 | 639-468 | not yet reported which blocks → | TELUS Mobility | 8303 | Saltcoats | — |
| 2021-08-06 | 639-472 | not yet reported which blocks → | TELUS Mobility | 8303 | Indian Head | — |
| 2021-08-06 | 639-473 | not yet reported which blocks → | TELUS Mobility | 8303 | Churchbridge | — |
| 2021-08-06 | 782-801 | not yet reported which blocks → | Iristel Inc. | 154E | Sydney | — |
| 2021-08-06 | 941-274 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 6502 | BRADENTON | FL |
| 2021-08-05 | 213-668 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | FRACTEL, LLC | 965H | LSAN DA 05 | CA |
| 2021-08-05 | 213-669 | 0–9 XXXall 10 · 6 holders which blocks → | FRACTEL, LLC | 965H | LSAN DA 01 | CA |
| 2021-08-05 | 213-889 | 0–9 XXXall 10 · 4 holders which blocks → | FRACTEL, LLC | 965H | LSAN DA 09 | CA |
| 2021-08-05 | 216-424 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - OH | 464C | CLEVELAND | OH |
| 2021-08-05 | 236-760 | not yet reported which blocks → | Iristel Inc. | 154E | Princeton | — |
| 2021-08-05 | 309-260 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC | 224C | BLOOMINGTN | IL |
| 2021-08-05 | 332-250 | 0–9 XXXwhole prefix which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | NWYRCYZN01 | NY |
| 2021-08-05 | 352-760 | 0–9 XXXall 10 · 6 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 6502 | DADE CITY | FL |
| 2021-08-05 | 442-366 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PALM SPG | CA |
| 2021-08-05 | 447-902 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | CHAMPAURBN | IL |
| 2021-08-05 | 470-834 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA | 6540 | ATLANTA | GA |
| 2021-08-05 | 507-801 | 0XXX1XXX2XXX6XXX8XXX · 4 holders which blocks → | WINNEBAGO COOPERATIVE TELEPHONE ASSOCIATION - MN | 695E | ALDEN | MN |
| 2021-08-05 | 510-951 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HAYWARD | CA |
| 2021-08-05 | 548-409 | not yet reported which blocks → | Iristel Inc. | 154E | Goderich | — |
| 2021-08-05 | 548-457 | not yet reported which blocks → | Iristel Inc. | 154E | Clinton | — |
| 2021-08-05 | 564-333 | 0–9 XXXall 10 · 4 holders which blocks → | FRACTEL, LLC | 965H | LONGVIEW | WA |
| 2021-08-05 | 650-789 | 0–9 XXXall 10 · 4 holders which blocks → | FRACTEL, LLC | 965H | MT VIEW | CA |
| 2021-08-05 | 657-517 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.