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
— 434-525 not yet reported which blocks → VERIZON VIRGINIA, INC. 9213 LYNCHBURG VA
— 434-528 7XXX which blocks → VERIZON VIRGINIA, INC. 9213 LYNCHBURG VA
— 434-531 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 CHARLOTSVL VA
— 434-534 1XXX2XXX3XXX4XXX5XXX7XXX · 3 holders which blocks → VERIZON VIRGINIA, INC. 9213 LYNCHBURG VA
— 434-535 1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 JARRATT VA
— 434-538 1XXX3XXX4XXX6XXX7XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 CREWE VA
— 434-540 not yet reported which blocks → VA
— 434-542 0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 6 holders which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 CHRLTTCTHS VA
— 434-544 0XXX1XXX · 2 holders which blocks → VERIZON VIRGINIA, INC. 9213 LYNCHBURG VA
— 434-546 2XXX4XXX5XXX8XXX9XXX which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LYNCHBURG VA
— 434-547 0XXX1XXX2XXX · 2 holders which blocks → UNITED STATES CELLULAR - VA 6283 FARMVILLE VA
— 434-549 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DANVILLE VA
— 434-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST VA
— 434-568 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 DRAKESBRCH VA
— 434-569 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 FARMVILLE VA
— 434-570 not yet reported which blocks → GCR TELECOMMUNICATIONS, INC. - VA 0445 SO BOSTON VA
— 434-571 not yet reported which blocks → VA
— 434-572 none assigned yet which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 SO BOSTON VA
— 434-574 9XXX which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 PROSPECT VA
— 434-575 not yet reported which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 SO BOSTON VA
— 434-577 0XXX1XXX3XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 SOBRUNSWIK VA
— 434-579 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 SO BOSTON VA
— 434-581 4XXX5XXX · 2 holders which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 ARVONIA VA
— 434-582 0XXX9XXX · 2 holders which blocks → VERIZON VIRGINIA, INC. 9213 LYNCHBURG VA
— 434-584 3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 SOUTH HILL VA
— 434-585 6XXX which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 VIRGILINA VA
— 434-589 not yet reported which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 PALMYRA VA
— 434-591 5XXX7XXX8XXX9XXX · 2 holders which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 PALMYRA VA
— 434-592 0XXX1XXX8XXX · 2 holders which blocks → VERIZON VIRGINIA, INC. 9213 LYNCHBURG VA
— 434-609 8XXX9XXX which blocks → UNITED STATES CELLULAR - VA 6283 LYNCHBURG VA
— 434-610 none assigned yet which blocks → UNITED STATES CELLULAR - VA 6283 LYNCHBURG VA
— 434-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX VA
— 434-634 not yet reported which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 EMPORIA VA
— 434-636 not yet reported which blocks → EMPOWER TELECOM, INC. 0219 BLACKRIDGE VA
— 434-637 4XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 EMPORIA VA
— 434-645 5XXX which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 CREWE VA
— 434-656 not yet reported which blocks → PEOPLES MUTUAL TEL. CO. 0244 GRETNA VA
— 434-658 0XXX1XXX2XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → VERIZON SOUTH, INC. - VA (CONTEL) 0233 CAPRON VA
— 434-660 none assigned yet which blocks → UNITED STATES CELLULAR - VA 6283 LYNCHBURG VA
— 434-661 1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → UNITED STATES CELLULAR - VA 6283 AMHERST VA
— 434-664 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 6 holders which blocks → UNITED STATES CELLULAR - VA 6283 APPOMATTOX VA
— 434-665 none assigned yet which blocks → UNITED STATES CELLULAR - VA 6283 LYNCHBURG VA
— 434-676 7XXX which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 KENBRIDGE VA
— 434-685 not yet reported which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 BACHESHALL VA
— 434-689 not yet reported which blocks → EMPOWER TELECOM, INC. 0219 BEECHWOOD VA
— 434-696 0XXX7XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF VIRGINIA, LLC 0254 VICTORIA VA
— 434-700 not yet reported which blocks → VA
— 434-703 not yet reported which blocks → VA
— 434-709 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 DANVILLE VA
— 434-710 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 DANVILLE 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.