NumberResearchRecent 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.
Most active assignees, last 30 days
New assignments by month
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Oct 2025
Quick find in this area code:
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 540-975 | none assigned yet which blocks → | METROPCS, INC. | 5562 | EDINBURG | VA |
| — | 540-976 | not yet reported which blocks → | VA | |||
| — | 540-977 | 7XXX8XXX · 2 holders which blocks → | VERIZON VIRGINIA, INC. | 9213 | ROANOKE | VA |
| — | 540-980 | not yet reported which blocks → | VERIZON VIRGINIA, INC. | 9213 | PULASKI | VA |
| — | 540-981 | 4XXX5XXX · 2 holders which blocks → | VERIZON VIRGINIA, INC. | 9213 | ROANOKE | VA |
| — | 540-982 | none assigned yet which blocks → | VERIZON VIRGINIA, INC. | 9213 | ROANOKE | VA |
| — | 540-983 | 2XXX5XXX which blocks → | VERIZON VIRGINIA, INC. | 9213 | ROANOKE | VA |
| — | 540-984 | not yet reported which blocks → | SHENANDOAH TEL. CO. | 0250 | EDINBURG | VA |
| — | 540-985 | 1XXX7XXX which blocks → | VERIZON VIRGINIA, INC. | 9213 | ROANOKE | VA |
| — | 540-986 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | VERIZON VIRGINIA, INC. | 9213 | ROANOKE | VA |
| — | 540-987 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX · 6 holders which blocks → | VERIZON VIRGINIA, INC. | 9213 | SPERRYVL | VA |
| — | 540-989 | not yet reported which blocks → | VERIZON VIRGINIA, INC. | 9213 | ROANOKE | VA |
| — | 540-990 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | TWILIO INTERNATIONAL, INC. | 506J | DAHLGREN | VA |
| — | 540-992 | 0XXX which blocks → | LUMOS TELEPHONE OF BOTETOURT LLC | 0249 | TROUTVILLE | VA |
| — | 540-993 | 0–9 XXXall 10 · 4 holders which blocks → | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | FREDECKSBG | VA |
| — | 540-994 | 4XXX6XXX7XXX · 3 holders which blocks → | VERIZON VIRGINIA, INC. | 9213 | PULASKI | VA |
| — | 540-996 | not yet reported which blocks → | MGW TELEPHONE COMPANY, INC. | 0238 | MCCLUNG | VA |
| — | 540-997 | 1XXX2XXX3XXX4XXX6XXX8XXX · 5 holders which blocks → | VERIZON VIRGINIA, INC. | 9213 | CRAIGSVL | VA |
| — | 540-999 | 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | VERIZON VIRGINIA, INC. | 9213 | SHENANDHPK | VA |
| — | 541-201 | 2XXX3XXX4XXX8XXX · 2 holders which blocks → | QWEST CORPORATION | 9638 | ASHLAND | OR |
| — | 541-202 | not yet reported which blocks → | COMMIO, LLC | 939H | MYRTLE CRK | OR |
| — | 541-205 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - OR | 3234 | KLAMATHFLS | OR |
| — | 541-206 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | EUGENE | OR |
| — | 541-207 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - OR | 3234 | CORVALLIS | OR |
| — | 541-210 | 4XXX5XXX8XXX9XXX · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | MEDFORD | OR |
| — | 541-211 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | OR |
| — | 541-217 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | COOS BAY | OR |
| — | 541-218 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GRANTSPASS | OR |
| — | 541-219 | 3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | LAKEVIEW | OR |
| — | 541-220 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | ALBANY | OR |
| — | 541-221 | 4XXX5XXX6XXX7XXX · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | EUGENE | OR |
| — | 541-223 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - OR | 7531 | ALBANY | OR |
| — | 541-224 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - OR | 7531 | CORVALLIS | OR |
| — | 541-225 | 4XXX5XXX7XXX8XXX · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - OR | 7531 | EUGENE | OR |
| — | 541-226 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GRANTSPASS | OR |
| — | 541-227 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MEDFORD | OR |
| — | 541-229 | not yet reported which blocks → | ONVOY, LLC - OR | 750E | ROSEBURG | OR |
| — | 541-230 | 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | T-MOBILE USA, INC. | 6529 | CORVALLIS | OR |
| — | 541-231 | 4XXX5XXX6XXX8XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | CORVALLIS | OR |
| — | 541-232 | none assigned yet which blocks → | T-MOBILE USA, INC. | 6529 | EUGENE | OR |
| — | 541-233 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - OR | 3234 | PRINEVILLE | OR |
| — | 541-234 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7172 | JUNCTIONCY | OR |
| — | 541-235 | not yet reported which blocks → | FARMERS MUTUAL TELEPHONE COMPANY - OR | 782H | ONTARIO | OR |
| — | 541-236 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7172 | ROSEBURG | OR |
| — | 541-237 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OR | 076F | GRANTSPASS | OR |
| — | 541-240 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | UNITED STATES CELLULAR - OR | 6349 | PENDLETON | OR |
| — | 541-242 | not yet reported which blocks → | QWEST CORPORATION | 9638 | EUGENE | OR |
| — | 541-243 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - OR | 3234 | CORVALLIS | OR |
| — | 541-245 | not yet reported which blocks → | QWEST CORPORATION | 9638 | MEDFORD | OR |
| — | 541-246 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7172 | EUGENE | OR |
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.