NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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, all time — NPA 434
BRIGHTSPEED OF VIRGINIA, LLC 76
NEW CINGULAR WIRELESS PCS, LLC - DC 44
VERIZON VIRGINIA, INC. 42
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 32
ONVOY, LLC - VA 28
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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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2023-06-15 434-340 0–9 XXXall 10 · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J CHARLOTSVL VA
2023-06-07 434-341 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DANVILLE VA
2023-03-20 434-330 0XXX1XXX3XXX · 2 holders which blocks → COMMIO, LLC 939H FORK UNION VA
2023-03-17 434-440 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → COMMIO, LLC 939H SO BOSTON VA
2023-03-16 434-320 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 732J CHARLOTSVL VA
2023-03-16 434-343 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DANVILLE VA
2023-02-13 434-317 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 732J LYNCHBURG VA
2022-12-15 434-314 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DANVILLE VA
2022-08-25 434-304 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 732J DANVILLE VA
2022-08-25 434-307 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NUSO, LLC 732J PALMYRA VA
2022-05-04 434-318 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F LYNCHBURG VA
2022-04-19 434-306 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DANVILLE VA
2022-04-15 434-301 8XXX9XXX · 2 holders which blocks → METROPCS, INC. 5562 BACHESHALL VA
2022-03-04 434-646 4XXX7XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WHITMELL VA
2022-03-02 434-687 0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PINEYRIVER VA
2022-02-25 434-624 0XXX1XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CLARKSVL VA
2022-02-18 434-267 7XXX which blocks → TON80 COMMUNICATIONS, LLC 516J VOLENS VA
2022-02-18 434-746 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHATHAM VA
2022-02-17 434-626 0XXX1XXX6XXX8XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PAMPLIN VA
2022-02-14 434-742 0XXX1XXX6XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LOVINGSTON VA
2022-02-11 434-683 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CLOVER VA
2022-02-10 434-437 0–9 XXXall 10 · 3 holders which blocks → TWILIO INTERNATIONAL, INC. 506J CHARLOTSVL VA
2022-02-08 434-768 0XXX1XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BIG ISLAND VA
2022-02-04 434-866 2XXX6XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SOUTH HILL VA
2022-02-01 434-342 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHASE CITY VA
2021-12-29 434-323 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 SO BOSTON VA
2021-10-13 434-506 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → METROPCS, INC. 5562 EMPORIA VA
2021-10-07 434-789 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 EMPORIA VA
2021-09-21 434-287 0–9 XXXall 10 · 3 holders which blocks → SHENTEL COMMUNICATIONS, LLC. - VA 4979 PALMYRA VA
2021-09-21 434-412 0XXX1XXX2XXX3XXX4XXX5XXX · 4 holders which blocks → SHENTEL COMMUNICATIONS, LLC. - VA 4979 ARVONIA VA
2021-08-11 434-312 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F BLACKSTONE VA
2021-05-26 434-464 0XXX2XXX3XXX6XXX · 3 holders which blocks → ONVOY, LLC - VA 138E VIRGILINA VA
2021-05-21 434-274 0XXX1XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → TELNYX LLC 073H TURBEVILLE VA
2021-05-20 434-261 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - VA 4644 RUSTBURG VA
2021-05-14 434-271 0XXX1XXX · 2 holders which blocks → TELNYX LLC 073H FORK UNION VA
2021-05-05 434-279 0XXX1XXX2XXX3XXX4XXX6XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 GLADYS VA
2021-05-05 434-744 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H BACHESHALL VA
2021-05-05 434-884 0XXX2XXX8XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H GLADYS VA
2021-05-04 434-403 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H ALBERTA VA
2021-05-04 434-428 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H CLARKSVL VA
2021-05-04 434-488 0XXX1XXX4XXX5XXX8XXX9XXX · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H KEYSVILLE VA
2021-04-30 434-387 0XXX1XXX3XXX4XXX8XXX · 3 holders which blocks → ONVOY, LLC - VA 138E SCHUYLER VA
2021-04-16 434-310 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - VA 138E CHARLOTSVL VA
2021-04-15 434-810 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - VA 138E LYNCHBURG VA
2021-04-12 434-269 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J CHARLOTSVL VA
2021-04-12 434-934 0XXX1XXX2XXX3XXX4XXX6XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ALTAVISTA VA
2021-03-10 434-697 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CROZET VA
2021-03-02 434-281 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J SOUTH HILL VA
2021-03-02 434-635 0XXX1XXX3XXX6XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DRAKESBRCH VA
2021-02-24 434-268 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J CROZET VA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.