Recent prefix assignments
375 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/30/2026
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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 540-529 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | ROANOKE | VA |
| — | 540-532 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WINCHESTER | VA |
| — | 540-533 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WINCHESTER | VA |
| — | 540-535 | 5XXX6XXX8XXX9XXX which blocks → | VERIZON VIRGINIA, INC. | 9213 | WINCHESTER | VA |
| — | 540-536 | not yet reported which blocks → | VERIZON VIRGINIA, INC. | 9213 | WINCHESTER | VA |
| — | 540-537 | 9XXX which blocks → | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | ROANOKE | VA |
| — | 540-538 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | FREDECKSBG | VA |
| — | 540-539 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WINCHESTER | VA |
| — | 540-542 | 9XXX which blocks → | VERIZON VIRGINIA, INC. | 9213 | WINCHESTER | VA |
| — | 540-543 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | VERIZON VIRGINIA, INC. | 9213 | MADISON | VA |
| — | 540-544 | not yet reported which blocks → | PEMBROKE TEL. COOP. | 0243 | NEWPORT | VA |
| — | 540-545 | 1XXX5XXX9XXX · 3 holders which blocks → | VERIZON VIRGINIA, INC. | 9213 | WINCHESTER | VA |
| — | 540-547 | 1XXX6XXX7XXX8XXX · 2 holders which blocks → | VERIZON VIRGINIA, INC. | 9213 | CULPEPER | VA |
| — | 540-548 | 5XXX6XXX7XXX9XXX · 4 holders which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | CHANCELLOR | VA |
| — | 540-550 | 8XXX9XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WINCHESTER | VA |
| — | 540-552 | not yet reported which blocks → | VERIZON VIRGINIA, INC. | 9213 | BLACKSBURG | VA |
| — | 540-553 | 1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | VERIZON VIRGINIA, INC. | 9213 | BLACKSBURG | VA |
| — | 540-554 | 0XXX1XXX3XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → | VERIZON VIRGINIA, INC. | 9213 | BLUEMONT | VA |
| — | 540-555 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | DIR ASST | VA |
| — | 540-556 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ROANOKE | VA |
| — | 540-557 | 8XXX which blocks → | VERIZON VIRGINIA, INC. | 9213 | BLACKSBURG | VA |
| — | 540-558 | 3XXX4XXX5XXX · 2 holders which blocks → | VERIZON VIRGINIA, INC. | 9213 | BLACKSBURG | VA |
| — | 540-559 | 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | FRONTIER COMMUNICATIONS OF VIRGINIA, INC. - VA | 127G | CROWSHMTIT | VA |
| — | 540-560 | 6XXX which blocks → | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | HARRISONBG | VA |
| — | 540-561 | not yet reported which blocks → | VERIZON VIRGINIA, INC. | 9213 | ROANOKE | VA |
| — | 540-562 | 8XXX which blocks → | VERIZON VIRGINIA, INC. | 9213 | ROANOKE | VA |
| — | 540-563 | not yet reported which blocks → | VERIZON VIRGINIA, INC. | 9213 | ROANOKE | VA |
| — | 540-564 | not yet reported which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | HARRISONBG | VA |
| — | 540-567 | not yet reported which blocks → | LUMOS TELEPHONE OF BOTETOURT LLC | 0249 | ORISKANY | VA |
| — | 540-568 | not yet reported which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | HARRISONBG | VA |
| — | 540-570 | none assigned yet which blocks → | UNITED STATES CELLULAR - VA | 6283 | BUENAVISTA | VA |
| — | 540-572 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 8 holders which blocks → | UNITED STATES CELLULAR - VA | 6283 | BUENAVISTA | VA |
| — | 540-574 | not yet reported which blocks → | VERIZON SOUTH, INC. - VA (CONTEL) | 0233 | HARRISONBG | VA |
| — | 540-576 | none assigned yet which blocks → | BRIGHTSPEED OF VIRGINIA, LLC | 0254 | UNION HALL | VA |
| — | 540-578 | 9XXX which blocks → | METROPCS, INC. | 5562 | HARRISONBG | VA |
| — | 540-580 | none assigned yet which blocks → | UNITED STATES CELLULAR - VA | 6283 | ROANOKE | VA |
| — | 540-581 | 2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | VERIZON VIRGINIA, INC. | 9213 | ROANOKE | VA |
| — | 540-582 | 0XXX1XXX4XXX · 3 holders which blocks → | VERIZON VIRGINIA, INC. | 9213 | SPOTSYLVAN | VA |
| — | 540-583 | 3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | BEDFORD | VA |
| — | 540-586 | not yet reported which blocks → | VERIZON VIRGINIA, INC. | 9213 | BEDFORD | VA |
| — | 540-587 | not yet reported which blocks → | VERIZON VIRGINIA, INC. | 9213 | BEDFORD | VA |
| — | 540-588 | 8XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | ROANOKE | VA |
| — | 540-589 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | ROANOKE | VA |
| — | 540-592 | 0XXX1XXX2XXX4XXX5XXX6XXX8XXX · 6 holders which blocks → | VERIZON VIRGINIA, INC. | 9213 | UPPERVILLE | VA |
| — | 540-593 | not yet reported which blocks → | CITIZENS TEL. COOP. | 0225 | BALLARD | VA |
| — | 540-599 | none assigned yet which blocks → | UNITED STATES CELLULAR - VA | 6283 | PEARISBURG | VA |
| — | 540-605 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | BLACKSBURG | VA |
| — | 540-607 | 1XXX2XXX3XXX4XXX5XXX8XXX9XXX which blocks → | METROPCS, INC. | 5562 | HARRISONBG | VA |
| — | 540-611 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | VA |
| — | 540-612 | not yet reported which blocks → | BANDWIDTH.COM CLEC, LLC - VA | 079F | HARRISONBG | VA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.