NumberResearchRecent prefix assignments
357 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026
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
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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 |
|---|---|---|---|---|---|---|
| — | 907-454 | not yet reported which blocks → | INTERIOR TEL. CO., INC. | 3011 | PORT LIONS | AK |
| — | 907-455 | not yet reported which blocks → | ACS OF FAIRBANKS, INC. | 3008 | FAIRBANKS | AK |
| — | 907-456 | not yet reported which blocks → | ACS OF FAIRBANKS, INC. | 3008 | FAIRBANKS | AK |
| — | 907-457 | not yet reported which blocks → | ACS OF FAIRBANKS, INC. | 3008 | FAIRBANKS | AK |
| — | 907-458 | not yet reported which blocks → | ACS OF FAIRBANKS, INC. | 3008 | FAIRBANKS | AK |
| — | 907-459 | not yet reported which blocks → | ACS OF FAIRBANKS, INC. | 3008 | FAIRBANKS | AK |
| — | 907-460 | not yet reported which blocks → | GCI COMMUNICATION CORP. DBA GENERAL COMMUNICATION | 6872 | FAIRBANKS | AK |
| — | 907-463 | not yet reported which blocks → | ACS OF ALASKA, INC. | 3022 | JUNEAU | AK |
| — | 907-464 | none assigned yet which blocks → | BRISTOL BAY TEL. COOP., INC. | 3003 | EKWOK | AK |
| — | 907-465 | 7XXX9XXX · 2 holders which blocks → | ACS OF ALASKA, INC. | 3022 | JUNEAU | AK |
| — | 907-467 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | CHUATHBALK | AK |
| — | 907-468 | not yet reported which blocks → | YUKON TEL. CO., INC. | 3025 | RUBY | AK |
| — | 907-471 | not yet reported which blocks → | BUSH-TEL, INC. | 3004 | KALSKAG | AK |
| — | 907-472 | not yet reported which blocks → | YUKON TEL. CO., INC. | 3025 | WHITTIER | AK |
| — | 907-473 | not yet reported which blocks → | BUSH-TEL, INC. | 3004 | SHAGELUK | AK |
| — | 907-474 | not yet reported which blocks → | ACS OF FAIRBANKS, INC. | 3008 | FAIRBANKS | AK |
| — | 907-475 | none assigned yet which blocks → | OTZ TEL. COOP., INC. | 3019 | KIANA | AK |
| — | 907-476 | not yet reported which blocks → | BUSH-TEL, INC. | 3004 | HOLY CROSS | AK |
| — | 907-477 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | KASIGLUK | AK |
| — | 907-478 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | STEVENSVLG | AK |
| — | 907-479 | not yet reported which blocks → | ACS OF FAIRBANKS, INC. | 3008 | FAIRBANKS | AK |
| — | 907-480 | not yet reported which blocks → | ARCTIC SLOPE TEL. ASSN. COOP., INC. | 3001 | NUIQSUT | AK |
| — | 907-481 | none assigned yet which blocks → | ACS OF THE NORTHLAND, INC. | 3030 | KODIAK | AK |
| — | 907-484 | none assigned yet which blocks → | OTZ TEL. COOP., INC. | 3019 | SELAWIK | AK |
| — | 907-485 | none assigned yet which blocks → | OTZ TEL. COOP., INC. | 3019 | NOATAK | AK |
| — | 907-486 | not yet reported which blocks → | ACS OF THE NORTHLAND, INC. | 3030 | KODIAK | AK |
| — | 907-487 | none assigned yet which blocks → | ACS OF THE NORTHLAND, INC. | 3030 | KODIAKUSCG | AK |
| — | 907-488 | not yet reported which blocks → | ACS OF THE NORTHLAND, INC. | 3030 | NORTH POLE | AK |
| — | 907-489 | not yet reported which blocks → | ACS OF THE NORTHLAND, INC. | 3030 | PTPROTECTN | AK |
| — | 907-490 | 8XXX which blocks → | ACS OF THE NORTHLAND, INC. | 3030 | NORTH POLE | AK |
| — | 907-491 | none assigned yet which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SEWARD | AK |
| — | 907-493 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | TOGIAK | AK |
| — | 907-494 | none assigned yet which blocks → | OTZ TEL. COOP., INC. | 3019 | BUCKLAND | AK |
| — | 907-495 | not yet reported which blocks → | MATANUSKA TEL. ASSN., INC. | 3015 | WILLOW | AK |
| — | 907-497 | not yet reported which blocks → | INTERIOR TEL. CO., INC. | 3011 | KING COVE | AK |
| — | 907-498 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | SHELDON PT | AK |
| — | 907-511 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | AK |
| — | 907-520 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | CENTRAL | AK |
| — | 907-522 | not yet reported which blocks → | ACS OF ANCHORAGE, INC. | 3000 | ANCHORAGE | AK |
| — | 907-524 | not yet reported which blocks → | UNITED-KUC, INC. - AK | 1449 | MCGRATH | AK |
| — | 907-525 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | TWIN HILLS | AK |
| — | 907-526 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | LIME VLG | AK |
| — | 907-527 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | NUNAPTCHUK | AK |
| — | 907-528 | not yet reported which blocks → | BRISTOL BAY CELLULAR PARTNERSHIP | 6747 | DILLINGHAM | AK |
| — | 907-529 | not yet reported which blocks → | GCI COMMUNICATION CORP. DBA GENERAL COMMUNICATION | 6872 | ANCHORAGE | AK |
| — | 907-530 | not yet reported which blocks → | ALASKA TELEPHONE COMPANY | 3017 | HOLLIS | AK |
| — | 907-532 | not yet reported which blocks → | INTERIOR TEL. CO., INC. | 3011 | COLD BAY | AK |
| — | 907-533 | none assigned yet which blocks → | BRISTOL BAY TEL. COOP., INC. | 3003 | IGIUGIG | AK |
| — | 907-534 | not yet reported which blocks → | ACS OF THE NORTHLAND, INC. | 3030 | KALTAG | AK |
| — | 907-536 | not yet reported which blocks → | UNITED UTILITIES, INC. | 3023 | EEK | AK |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.