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
— 603-700 not yet reported which blocks → NH
— 603-704 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 DERRY NH
— 603-706 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J RAYMOND NH
— 603-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NH
— 603-712 0XXX1XXX3XXX5XXX6XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 PIKE NH
— 603-715 0XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J CONCORD NH
— 603-716 0–9 XXXall 10 · 3 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 MANCHESTER NH
— 603-717 1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J CONCORD NH
— 603-719 5XXX6XXX7XXX8XXX · 4 holders which blocks → FREEDOM RING COMMUNICATIONS, LLC 8468 KEENE NH
— 603-723 none assigned yet which blocks → UNITED STATES CELLULAR - NH 6290 BERLIN NH
— 603-724 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J CONCORD NH
— 603-725 0XXX6XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NH 4017 TAMWORTH NH
— 603-726 0XXX1XXX5XXX6XXX · 2 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CAMPTON NH
— 603-727 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J LEBANON NH
— 603-728 1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NH 4017 NOWOODSTOK NH
— 603-729 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 TILTON NH
— 603-730 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 NO CONWAY NH
— 603-731 not yet reported which blocks → BELL ATLANTIC MOBILE, INC 6386 CONCORD NH
— 603-732 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 MILFORD NH
— 603-733 2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NH 4017 NO CONWAY NH
— 603-734 1XXX2XXX4XXX5XXX7XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 EPPING NH
— 603-735 none assigned yet which blocks → KEARSARGE TEL. CO. 0045 ANDOVER NH
— 603-736 0XXX1XXX2XXX5XXX6XXX7XXX · 6 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 EPSOM NH
— 603-737 3XXX7XXX which blocks → FREEDOM RING COMMUNICATIONS, LLC 8468 LACONIA NH
— 603-738 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CONCORD NH
— 603-739 6XXX7XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 NOWOODSTOK NH
— 603-740 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 DOVER NH
— 603-741 4XXX5XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NH 4017 NEW BOSTON NH
— 603-742 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 DOVER NH
— 603-743 none assigned yet which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 DOVER NH
— 603-744 none assigned yet which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 BRISTOL NH
— 603-745 0XXX7XXX · 2 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NOWOODSTOK NH
— 603-746 0XXX1XXX which blocks → MERRIMACK COUNTY TEL. CO. 0047 CONTOOCOOK NH
— 603-747 9XXX which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 WOODSVILLE NH
— 603-749 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 DOVER NH
— 603-750 3XXX8XXX9XXX · 2 holders which blocks → FIDIUM ENTERPRISE SERVICES, LLC 383J DOVER NH
— 603-751 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 PELHAM NH
— 603-752 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 BERLIN NH
— 603-753 2XXX3XXX5XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 PENACOOK NH
— 603-754 0XXX5XXX · 2 holders which blocks → FREEDOM RING COMMUNICATIONS, LLC 8468 LANCASTER NH
— 603-755 0XXX1XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 FARMINGTON NH
— 603-756 0XXX1XXX5XXX6XXX8XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 WALPOLE NH
— 603-757 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J KEENE NH
— 603-758 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J HAMPTON NH
— 603-759 not yet reported which blocks → BELL ATLANTIC MOBILE, INC 6386 NASHUA NH
— 603-761 4XXX5XXX which blocks → FREEDOM RING COMMUNICATIONS, LLC 8468 LITTLETON NH
— 603-762 6XXX7XXX8XXX9XXX · 2 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 KEENE NH
— 603-763 1XXX6XXX7XXX · 2 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 SUNAPEE NH
— 603-764 1XXX6XXX7XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 WARREN NH
— 603-765 none assigned yet which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 NASHUA 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.