NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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 603
CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 247
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
— 603-640 2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 HANOVER NH
— 603-641 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MANCHESTER NH
— 603-642 1XXX which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 KINGSTON NH
— 603-643 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 HANOVER NH
— 603-644 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MANCHESTER NH
— 603-645 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MANCHESTER NH
— 603-646 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 HANOVER NH
— 603-647 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MANCHESTER NH
— 603-650 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 HANOVER NH
— 603-652 1XXX3XXX8XXX · 2 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MILTON NH
— 603-653 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 HANOVER NH
— 603-655 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MANCHESTER NH
— 603-659 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NEWMARKET NH
— 603-663 0XXX9XXX · 2 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MANCHESTER NH
— 603-664 0XXX3XXX4XXX · 2 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 BARRINGTON NH
— 603-665 0XXX which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MANCHESTER NH
— 603-666 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MANCHESTER NH
— 603-668 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MANCHESTER NH
— 603-669 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MANCHESTER NH
— 603-672 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MILFORD NH
— 603-673 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MILFORD NH
— 603-675 none assigned yet which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 PLAINFIELD NH
— 603-679 0XXX6XXX7XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 EPPING NH
— 603-683 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MERRIMACK NH
— 603-692 1XXX8XXX · 2 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 SOMERSWTH NH
— 603-695 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MANCHESTER NH
— 603-726 0XXX1XXX5XXX6XXX · 2 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CAMPTON NH
— 603-736 0XXX1XXX2XXX5XXX6XXX7XXX · 6 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 EPSOM NH
— 603-740 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 DOVER 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
— 603-747 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
— 603-752 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
— 603-755 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
— 603-763 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
— 603-768 0XXX1XXX4XXX7XXX9XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 DANBURY NH
— 603-771 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MANCHESTER NH
— 603-772 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 EXETER NH
— 603-773 3XXX8XXX · 2 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 EXETER NH
— 603-775 1XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 EXETER NH
— 603-777 0XXX1XXX2XXX6XXX7XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 EXETER NH
— 603-778 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 EXETER NH
— 603-783 1XXX2XXX3XXX5XXX6XXX7XXX · 6 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CANTERBURY NH
— 603-786 4XXX5XXX6XXX7XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 RUMNEY NH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.