NumberResearchRecent prefix assignments
349 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026
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 |
|---|---|---|---|---|---|---|
| — | 270-586 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FRANKLIN | KY |
| — | 270-587 | 1XXX8XXX9XXX · 3 holders which blocks → | COMMIO, LLC | 939H | FRANKLIN | KY |
| — | 270-588 | not yet reported which blocks → | ONVOY, LLC - KY | 896E | HARTFORD | KY |
| — | 270-590 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY | 6500 | GLASGOW | KY |
| — | 270-591 | none assigned yet which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | GUTHRIE | KY |
| — | 270-592 | not yet reported which blocks → | ONVOY, LLC - KY | 896E | GREENSBURG | KY |
| — | 270-595 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | ONVOY, LLC - KY | 896E | CAMPBELSVL | KY |
| — | 270-596 | not yet reported which blocks → | ONVOY, LLC - KY | 896E | RUSSELLVL | KY |
| — | 270-597 | none assigned yet which blocks → | WINDSTREAM KENTUCKY EAST, INC. - LONDON | 9691 | BROWNSVL | KY |
| — | 270-598 | none assigned yet which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FRANKLIN | KY |
| — | 270-602 | 1XXX7XXX9XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | DRAKESBORO | KY |
| — | 270-606 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY | 6500 | SCOTTSVL | KY |
| — | 270-611 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | KY |
| — | 270-614 | 6XXX8XXX · 2 holders which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | GLASGWRURL | KY |
| — | 270-618 | not yet reported which blocks → | NORTH CENTRAL TEL. COOP. | 4001 | SCTSVL RUL | KY |
| — | 270-619 | none assigned yet which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY | 6500 | MADISONVL | KY |
| — | 270-621 | 9XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY | 6500 | MADISONVL | KY |
| — | 270-622 | not yet reported which blocks → | NORTH CENTRAL TEL. COOP. | 4001 | SCTSVL RUL | KY |
| — | 270-623 | none assigned yet which blocks → | WEST KENTUCKY RURAL TEL | 0421 | FANCY FARM | KY |
| — | 270-626 | not yet reported which blocks → | ONVOY, LLC - KY | 896E | CLOVERPORT | KY |
| — | 270-628 | none assigned yet which blocks → | WINDSTREAM KENTUCKY EAST, INC. - LONDON | 9691 | BARDWELL | KY |
| — | 270-630 | not yet reported which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | HAWESVILLE | KY |
| — | 270-631 | 5XXX6XXX7XXX8XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | HENDERSON | KY |
| — | 270-633 | not yet reported which blocks → | ONVOY, LLC - KY | 896E | ELKTON | KY |
| — | 270-634 | 6XXX9XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY | 6500 | FAIRPLAY | KY |
| — | 270-637 | not yet reported which blocks → | ONVOY, LLC - KY | 896E | CALHOUN | KY |
| — | 270-638 | not yet reported which blocks → | ONVOY, LLC - KY | 896E | MURRAY | KY |
| — | 270-639 | 1XXX2XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | DIXON | KY |
| — | 270-640 | 0XXX2XXX9XXX · 2 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | OAK GROVE | KY |
| — | 270-642 | 3XXX which blocks → | WEST KENTUCKY RURAL TEL | 0421 | CUNNINGHAM | KY |
| — | 270-643 | not yet reported which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | MADISONVL | KY |
| — | 270-644 | 4XXX which blocks → | ONVOY, LLC - KY | 896E | MARION | KY |
| — | 270-645 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | OWENSBORO | KY |
| — | 270-646 | 9XXX which blocks → | SO CENTRAL RURAL TELECOMM COOPERATIVE, INC. | 0418 | LUCAS | KY |
| — | 270-647 | 3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY | 6500 | FRANKLIN | KY |
| — | 270-650 | 8XXX9XXX · 2 holders which blocks → | ONVOY, LLC - KY | 896E | MAYFIELD | KY |
| — | 270-651 | not yet reported which blocks → | WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON | 9690 | GLASGOW | KY |
| — | 270-652 | none assigned yet which blocks → | ONVOY, LLC - KY | 896E | MORGANFLD | KY |
| — | 270-653 | none assigned yet which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | CLINTON | KY |
| — | 270-655 | 1XXX4XXX8XXX9XXX · 2 holders which blocks → | WINDSTREAM KENTUCKY EAST, INC. - LONDON | 9691 | ARLINGTON | KY |
| — | 270-656 | 1XXX2XXX3XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | MORGANTOWN | KY |
| — | 270-657 | 0XXX4XXX · 2 holders which blocks → | LOGAN TEL. COOP., INC. | 0413 | DUNMOR | KY |
| — | 270-658 | none assigned yet which blocks → | WEST KENTUCKY RURAL TEL | 0421 | WESTPLAINS | KY |
| — | 270-659 | not yet reported which blocks → | WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON | 9690 | GLASGOW | KY |
| — | 270-661 | 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | TELNYX LLC | 073H | MURRAY | KY |
| — | 270-662 | 1XXX2XXX3XXX4XXX6XXX9XXX · 4 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | MORGANTOWN | KY |
| — | 270-663 | not yet reported which blocks → | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | OWENSBORO | KY |
| — | 270-664 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | CLAY | KY |
| — | 270-665 | 0XXX which blocks → | BALLARD RURAL TEL. COOP. CORP., INC. | 0396 | LA CENTER | KY |
| — | 270-667 | 4XXX which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | PROVIDENCE | KY |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.