NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
Rogers Communications Canada Inc. (Wireless) 23
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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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 603-467 1XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → WAVENATION, LLC 700J MANCHESTER NH
— 603-468 0XXX2XXX9XXX · 3 holders which blocks → FREEDOM RING COMMUNICATIONS, LLC 8468 SEABROOK NH
— 603-469 9XXX which blocks → KEARSARGE TEL. CO. 0045 MERIDEN NH
— 603-471 3XXX5XXX · 2 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 BEDFORD NH
— 603-472 0XXX1XXX · 2 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 BEDFORD NH
— 603-473 1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MILTON ML NH
— 603-474 4XXX which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 SEABROOK NH
— 603-475 not yet reported which blocks → BELL ATLANTIC MOBILE, INC 6386 SALEM NH
— 603-476 3XXX4XXX7XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CTRSANDWIH NH
— 603-477 none assigned yet which blocks → UNITED STATES CELLULAR - NH 6290 CLAREMONT NH
— 603-478 not yet reported which blocks → GRANITE STATE TEL., INC. 0039 HLLSBUPVLG NH
— 603-479 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DERRY NH
— 603-480 not yet reported which blocks → BANDWIDTH.COM CLEC, LLC - NH 996E MANCHESTER NH
— 603-481 3XXX5XXX7XXX8XXX · 3 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 PLYMOUTH NH
— 603-482 6XXX7XXX9XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 ERROL NH
— 603-483 3XXX4XXX6XXX7XXX9XXX · 5 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CANDIA NH
— 603-485 0XXX which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 SUNCOOK NH
— 603-486 0XXX1XXX · 2 holders which blocks → UNITED STATES CELLULAR - NH 6290 MANCHESTER NH
— 603-487 0XXX1XXX4XXX6XXX7XXX9XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NEW BOSTON NH
— 603-488 0XXX6XXX7XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J BEDFORD NH
— 603-489 0XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J HAMPSTEAD NH
— 603-490 not yet reported which blocks → BELL ATLANTIC MOBILE, INC 6386 DERRY NH
— 603-491 not yet reported which blocks → BELL ATLANTIC MOBILE, INC 6386 CONCORD NH
— 603-492 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MANCHESTER NH
— 603-493 not yet reported which blocks → BELL ATLANTIC MOBILE, INC 6386 MERRIMACK NH
— 603-494 not yet reported which blocks → BELL ATLANTIC MOBILE, INC 6386 MERRIMACK NH
— 603-495 not yet reported which blocks → GRANITE STATE TEL., INC. 0039 WASHINGTON NH
— 603-496 not yet reported which blocks → BELL ATLANTIC MOBILE, INC 6386 CONCORD NH
— 603-497 0XXX1XXX7XXX which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 GOFFSTOWN NH
— 603-498 not yet reported which blocks → BELL ATLANTIC MOBILE, INC 6386 PORTSMOUTH NH
— 603-499 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NH 4017 KEENE NH
— 603-501 0XXX1XXX2XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J PORTSMOUTH NH
— 603-502 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PORTSMOUTH NH
— 603-503 0XXX2XXX4XXX5XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 LANCASTER NH
— 603-504 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → UNITED STATES CELLULAR - NH 6290 CLAREMONT NH
— 603-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NH
— 603-512 none assigned yet which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MANCHESTER NH
— 603-513 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 CONCORD NH
— 603-515 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 WOLFEBORO NH
— 603-516 not yet reported which blocks → FREEDOM RING COMMUNICATIONS, LLC 8468 DOVER NH
— 603-517 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 MERRIMACK NH
— 603-518 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → AT&T - LOCAL 7421 MANCHESTER NH
— 603-520 not yet reported which blocks → BELL ATLANTIC MOBILE, INC 6386 LACONIA NH
— 603-521 0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → AT&T - LOCAL 7421 NASHUA NH
— 603-522 1XXX2XXX4XXX7XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 SANBORNVL NH
— 603-523 2XXX which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CANAAN NH
— 603-524 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 LACONIA NH
— 603-525 6XXX7XXX8XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 HANCOCK NH
— 603-526 not yet reported which blocks → KEARSARGE TEL. CO. 0045 NEW LONDON NH
— 603-527 8XXX which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 LACONIA NH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.