NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

375 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/30/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 425-645 9XXX which blocks → ONVOY, LLC - WA 483E EVERETT WA
— 425-646 not yet reported which blocks → QWEST CORPORATION 9638 BELLEVUE WA
— 425-647 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 BELLEVUE WA
— 425-648 9XXX which blocks → ONVOY, LLC - WA 483E HALLS LAKE WA
— 425-649 not yet reported which blocks → QWEST CORPORATION 9638 BELLEVUE WA
— 425-650 not yet reported which blocks → ONVOY, LLC - WA 483E KIRKLAND WA
— 425-651 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 ISSAQUAH WA
— 425-652 none assigned yet which blocks → T-MOBILE USA, INC. 6529 BELLEVUE WA
— 425-653 not yet reported which blocks → QWEST CORPORATION 9638 BELLEVUE WA
— 425-656 not yet reported which blocks → QWEST CORPORATION 9638 RENTON WA
— 425-657 0XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 ISSAQUAH WA
— 425-658 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - WA 483E KIRKLAND WA
— 425-660 0XXX1XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 MAPLE VLY WA
— 425-663 0XXX1XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 RENTON WA
— 425-669 0XXX1XXX9XXX · 2 holders which blocks → ONVOY, LLC - WA 483E SILVERLAKE WA
— 425-670 not yet reported which blocks → ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 HALLS LAKE WA
— 425-671 not yet reported which blocks → ONVOY, LLC - WA 483E BELLEVUE WA
— 425-672 not yet reported which blocks → ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 HALLS LAKE WA
— 425-673 not yet reported which blocks → ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 HALLS LAKE WA
— 425-675 not yet reported which blocks → ONVOY, LLC - WA 483E BELLEVUE WA
— 425-677 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 7455 ISSAQUAH WA
— 425-678 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 7455 HALLS LAKE WA
— 425-679 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 BELLEVUE WA
— 425-681 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
— 425-686 0XXX2XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 7455 BOTHELL WA
— 425-687 not yet reported which blocks → QWEST CORPORATION 9638 RENTON WA
— 425-688 not yet reported which blocks → QWEST CORPORATION 9638 BELLEVUE WA
— 425-691 0XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 7455 BELLEVUE WA
— 425-696 not yet reported which blocks → ONVOY, LLC - WA 483E BELLEVUE WA
— 425-697 0XXX1XXX9XXX · 3 holders which blocks → ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 HALLS LAKE WA
— 425-698 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 BELLEVUE WA
— 425-699 not yet reported which blocks → ONVOY, LLC - WA 483E BELLEVUE WA
— 425-700 not yet reported which blocks → WA
— 425-702 not yet reported which blocks → ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 KIRKLAND WA
— 425-704 not yet reported which blocks → ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 KIRKLAND WA
— 425-709 not yet reported which blocks → QWEST CORPORATION 9638 BELLEVUE WA
— 425-710 not yet reported which blocks → ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 EVERETT WA
— 425-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX WA
— 425-712 not yet reported which blocks → ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 HALLS LAKE WA
— 425-717 none assigned yet which blocks → ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 EVERETT WA
— 425-727 not yet reported which blocks → ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 KIRKLAND WA
— 425-728 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 RENTON WA
— 425-732 0XXX5XXX9XXX · 3 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 BELLEVUE WA
— 425-736 6XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
— 425-738 2XXX3XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 RENTON WA
— 425-739 not yet reported which blocks → ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 KIRKLAND WA
— 425-740 3XXX4XXX9XXX · 3 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 EVERETT WA
— 425-741 not yet reported which blocks → ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 HALLS LAKE WA
— 425-742 not yet reported which blocks → ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 HALLS LAKE WA
— 425-743 not yet reported which blocks → ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 HALLS LAKE WA

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.