NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 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, last 30 days — NPA 774
NEW CINGULAR WIRELESS PCS, LLC - DC 1
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
— 774-321 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - MA 892D AUBURN MA
— 774-342 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H SPENCER MA
— 774-363 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SAGAMORE MA
— 774-367 0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - MA 892D ASSONET MA
— 774-370 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MA 892D W BOYLSTON MA
— 774-373 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J MIDDLEBORO MA
— 774-377 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - MA 892D MATTAPOSTT MA
— 774-383 1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - MA 892D WELLFLEET MA
— 774-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 774-418 0–9 XXXall 10 · 6 holders which blocks → EDGETEL, LLC 179J WORCESTER MA
— 774-425 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MA 892D NEWBEDFORD MA
— 774-426 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J PLYMOUTH MA
— 774-447 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → ONVOY, LLC - MA 892D VINEYRDHVN MA
— 774-461 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 022H FALL RIVER MA
— 774-495 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J WEBSTER MA
— 774-500 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MA 892D DIGHTON MA
— 774-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 774-525 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 732J WORCESTER MA
— 774-530 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WORCESTER MA
— 774-543 not yet reported which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 BARNSTABLE MA
— 774-549 1XXX3XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J EDGARTOWN MA
— 774-554 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 XXXXXXXXXX MA
— 774-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST MA
— 774-582 0XXX1XXX3XXX4XXX5XXX6XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J MATTAPOSTT MA
— 774-593 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E PROVINCETN MA
— 774-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 774-612 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H FALMOUTH MA
— 774-613 1XXX3XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E FRANKLIN MA
— 774-666 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - MA 892D GRAFTON MA
— 774-700 not yet reported which blocks → MA
— 774-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 774-800 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MA 892D CARVER MA
— 774-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 774-814 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 774-900 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 XXXXXXXXXX MA
— 774-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MA
— 774-920 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 BROCKTON MA
— 774-931 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 XXXXXXXXXX MA
— 774-940 not yet reported which blocks → MA
— 774-950 not yet reported which blocks → MA
— 774-958 not yet reported which blocks → MA
— 774-959 not yet reported which blocks → MA
— 774-976 not yet reported which blocks → MA
— 774-997 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 ATTLEBORO MA

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.