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 |
|---|---|---|---|---|---|---|
| — | 541-328 | 2XXX which blocks → | CENTURYTEL OF OREGON, INC. DBA CENTURYLINK | 2360 | PINE GROVE | OR |
| — | 541-329 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - OR | 750E | BANDON | OR |
| — | 541-330 | not yet reported which blocks → | QWEST CORPORATION | 9638 | BEND | OR |
| — | 541-331 | 7XXX8XXX which blocks → | METROPCS, INC. | 5562 | KLAMATHFLS | OR |
| — | 541-332 | not yet reported which blocks → | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4323 | PORTORFORD | OR |
| — | 541-333 | not yet reported which blocks → | UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR | 4520 | GRASS VLY | OR |
| — | 541-334 | not yet reported which blocks → | QWEST CORPORATION | 9638 | EUGENE | OR |
| — | 541-335 | 1XXX9XXX which blocks → | QWEST CORPORATION | 9638 | EUGENE | OR |
| — | 541-336 | 6XXX which blocks → | QWEST CORPORATION | 9638 | TOLEDO | OR |
| — | 541-337 | 2XXX which blocks → | T-MOBILE USA, INC. | 6529 | EUGENE | OR |
| — | 541-338 | not yet reported which blocks → | QWEST CORPORATION | 9638 | EUGENE | OR |
| — | 541-339 | not yet reported which blocks → | OREGON-IDAHO UTILITIES, INC. | 2390 | RIDGEVIEW | OR |
| — | 541-340 | 1XXX4XXX8XXX · 2 holders which blocks → | METROPCS, INC. | 5562 | THE DALLES | OR |
| — | 541-341 | not yet reported which blocks → | QWEST CORPORATION | 9638 | EUGENE | OR |
| — | 541-342 | not yet reported which blocks → | QWEST CORPORATION | 9638 | EUGENE | OR |
| — | 541-343 | not yet reported which blocks → | QWEST CORPORATION | 9638 | EUGENE | OR |
| — | 541-344 | not yet reported which blocks → | QWEST CORPORATION | 9638 | EUGENE | OR |
| — | 541-345 | not yet reported which blocks → | QWEST CORPORATION | 9638 | EUGENE | OR |
| — | 541-346 | not yet reported which blocks → | QWEST CORPORATION | 9638 | EUGENE | OR |
| — | 541-347 | 0XXX which blocks → | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4323 | BANDON | OR |
| — | 541-348 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4323 | LANGLOIS | OR |
| — | 541-349 | not yet reported which blocks → | QWEST CORPORATION | 9638 | EUGENE | OR |
| — | 541-350 | not yet reported which blocks → | T-MOBILE USA, INC. | 6529 | BEND | OR |
| — | 541-352 | not yet reported which blocks → | UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR | 4520 | PARKDALE | OR |
| — | 541-353 | not yet reported which blocks → | CENTURYTEL OF OREGON, INC. DBA CENTURYLINK | 2360 | BLY | OR |
| — | 541-354 | 7XXX8XXX · 2 holders which blocks → | UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR | 4520 | ODELL | OR |
| — | 541-356 | not yet reported which blocks → | CENTURYTEL OF OREGON, INC. DBA CENTURYLINK | 2360 | ROCKYPOINT | OR |
| — | 541-358 | not yet reported which blocks → | OREGON TEL. CORP. | 2389 | HARPER | OR |
| — | 541-361 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | UNITED STATES CELLULAR - OR | 6349 | REEDSPORT | OR |
| — | 541-365 | not yet reported which blocks → | CENTURYTEL OF OREGON, INC. DBA CENTURYLINK | 2360 | CHEMULT | OR |
| — | 541-367 | not yet reported which blocks → | CENTURYTEL OF OREGON, INC. DBA CENTURYLINK | 2395 | SWEET HOME | OR |
| — | 541-369 | not yet reported which blocks → | ROOME TELECOMMUNICATIONS, INC. | 2375 | HALSEY | OR |
| — | 541-372 | 6XXX which blocks → | QWEST CORPORATION | 9638 | NYSSA | OR |
| — | 541-374 | not yet reported which blocks → | UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR | 4520 | CASCADELKS | OR |
| — | 541-376 | 2XXX3XXX4XXX6XXX7XXX9XXX · 4 holders which blocks → | CENTURYTEL OF OREGON, INC. DBA CENTURYLINK | 2360 | ECHO | OR |
| — | 541-377 | none assigned yet which blocks → | UNITED STATES CELLULAR - OR | 6349 | PENDLETON | OR |
| — | 541-378 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - OR | 7531 | ROSEBURG | OR |
| — | 541-379 | none assigned yet which blocks → | UNITED STATES CELLULAR - OR | 6349 | PENDLETON | OR |
| — | 541-380 | 2XXX3XXX7XXX · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | HOOD RIVER | OR |
| — | 541-381 | 3XXX which blocks → | CENTURYTEL OF OREGON, INC. DBA CENTURYLINK | 2360 | FT KLAMATH | OR |
| — | 541-382 | not yet reported which blocks → | QWEST CORPORATION | 9638 | BEND | OR |
| — | 541-383 | not yet reported which blocks → | QWEST CORPORATION | 9638 | BEND | OR |
| — | 541-384 | not yet reported which blocks → | HOME TEL. CO. | 2377 | CONDON | OR |
| — | 541-385 | not yet reported which blocks → | QWEST CORPORATION | 9638 | BEND | OR |
| — | 541-386 | not yet reported which blocks → | UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR | 4520 | HOOD RIVER | OR |
| — | 541-387 | not yet reported which blocks → | UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR | 4520 | HOOD RIVER | OR |
| — | 541-388 | not yet reported which blocks → | QWEST CORPORATION | 9638 | BEND | OR |
| — | 541-389 | not yet reported which blocks → | QWEST CORPORATION | 9638 | BEND | OR |
| — | 541-390 | 2XXX which blocks → | T-MOBILE USA, INC. | 6529 | BEND | OR |
| — | 541-391 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | ROSEBURG | 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.