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
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Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 662-513 | 1XXX9XXX · 2 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | OXFORD | MS |
| — | 662-514 | 1XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS | 6396 | GREENWOOD | MS |
| — | 662-515 | 5XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS | 6396 | GREENWOOD | MS |
| — | 662-517 | none assigned yet which blocks → | BANDWIDTH.COM CLEC, LLC - MS | 992E | CLEVELAND | MS |
| — | 662-519 | 2XXX5XXX7XXX · 3 holders which blocks → | METROPCS, INC. | 5562 | TUNICA | MS |
| — | 662-522 | 2XXX3XXX7XXX8XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS | 6396 | GREENVILLE | MS |
| — | 662-523 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | TUPELO | MS |
| — | 662-526 | 2XXX3XXX4XXX6XXX8XXX · 4 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | COMO | MS |
| — | 662-531 | none assigned yet which blocks → | BANDWIDTH.COM CLEC, LLC - MS | 992E | CHARLESTON | MS |
| — | 662-533 | not yet reported which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | OXFORD | MS |
| — | 662-534 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NEW ALBANY | MS |
| — | 662-538 | none assigned yet which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NEW ALBANY | MS |
| — | 662-539 | 5XXX7XXX9XXX · 3 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NEW ALBANY | MS |
| — | 662-544 | 4XXX5XXX6XXX7XXX8XXX9XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HOLLY SPG | MS |
| — | 662-547 | 1XXX2XXX3XXX4XXX5XXX8XXX · 5 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | MCCOOL | MS |
| — | 662-551 | none assigned yet which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | HOLLY SPG | MS |
| — | 662-552 | not yet reported which blocks → | CELLULAR SOUTH, INC. | 6581 | EUPORA | MS |
| — | 662-555 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | DIR ASST | MS |
| — | 662-556 | none assigned yet which blocks → | ONVOY, LLC - MS | 719E | ASHLAND | MS |
| — | 662-558 | 0XXX1XXX which blocks → | BANDWIDTH.COM CLEC, LLC - MS | 992E | SENATOBIA | MS |
| — | 662-559 | none assigned yet which blocks → | BANDWIDTH.COM CLEC, LLC - MS | 992E | HOUSTON | MS |
| — | 662-560 | none assigned yet which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | SENATOBIA | MS |
| — | 662-561 | 3XXX8XXX · 2 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | BATESVILLE | MS |
| — | 662-562 | none assigned yet which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | SENATOBIA | MS |
| — | 662-563 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | BATESVILLE | MS |
| — | 662-564 | 0XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → | BRIGHTSPEED OF MISSISSIPPI, LLC | 0458 | CHULAHOMA | MS |
| — | 662-565 | 1XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | DUCK HILL | MS |
| — | 662-566 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | VERONA | MS |
| — | 662-568 | 0XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → | FRONTIER COMMUNICATIONS OF MISSISSIPPI, INC. | 0460 | HOULKA | MS |
| — | 662-569 | not yet reported which blocks → | SLEDGE TEL. CO., INC. | 0466 | SUNFLOWER | MS |
| — | 662-571 | not yet reported which blocks → | CELLULAR SOUTH, INC. | 6581 | YAZOO CITY | MS |
| — | 662-575 | 0XXX which blocks → | BANDWIDTH.COM CLEC, LLC - MS | 992E | CORINTH | MS |
| — | 662-578 | 0XXX3XXX6XXX8XXX9XXX · 4 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | BATESVILLE | MS |
| — | 662-583 | 2XXX3XXX which blocks → | ONVOY, LLC - MS | 719E | GREENWOOD | MS |
| — | 662-584 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - MS | 719E | TUPELO | MS |
| — | 662-585 | not yet reported which blocks → | FULTON TEL. CO., INC. | 0455 | FAIRVIEW | MS |
| — | 662-600 | 0XXX1XXX2XXX6XXX8XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | CALHOUN CY | MS |
| — | 662-609 | 3XXX4XXX5XXX7XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BATESVILLE | MS |
| — | 662-610 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | TUPELO | MS |
| — | 662-611 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | MS |
| — | 662-614 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | GRENADA | MS |
| — | 662-615 | 1XXX4XXX5XXX which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | STARKVILLE | MS |
| — | 662-620 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | TUPELO | MS |
| — | 662-621 | 0XXX3XXX6XXX7XXX · 3 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | CLARKSDALE | MS |
| — | 662-622 | 1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | COLDWATER | MS |
| — | 662-623 | 1XXX2XXX3XXX4XXX which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | OAKLAND | MS |
| — | 662-624 | 1XXX7XXX which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | CLARKSDALE | MS |
| — | 662-627 | none assigned yet which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | CLARKSDALE | MS |
| — | 662-628 | 4XXX which blocks → | CALHOUN CITY TEL. CO., INC. | 0448 | CALHOUN CY | MS |
| — | 662-630 | 5XXX9XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS | 6396 | COLUMBUS | MS |
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.