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
— 603-787 3XXX5XXX7XXX8XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 WOODSVILLE NH
— 603-788 6XXX7XXX8XXX9XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 LANCASTER NH
— 603-791 0XXX4XXX which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NASHUA NH
— 603-795 0XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 LYME NH
— 603-823 0XXX1XXX2XXX3XXX4XXX6XXX · 6 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 FRANCONIA NH
— 603-826 0XXX1XXX2XXX6XXX7XXX8XXX · 5 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CHARLESTN NH
— 603-827 0XXX1XXX2XXX4XXX5XXX7XXX9XXX · 6 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 HARRISVL NH
— 603-835 0XXX1XXX3XXX4XXX5XXX8XXX · 5 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 ALSTEAD NH
— 603-837 0XXX1XXX6XXX7XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 WHITEFIELD NH
— 603-838 0XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 LISBON NH
— 603-846 2XXX6XXX8XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 TWIN MT NH
— 603-847 0XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 SULLIVAN NH
— 603-863 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NEWPORT NH
— 603-864 0XXX6XXX8XXX9XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NASHUA NH
— 603-865 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NEWPORT NH
— 603-868 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 DURHAM NH
— 603-869 0XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 BETHLEHEM NH
— 603-870 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 SALEM NH
— 603-876 2XXX5XXX6XXX8XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MARLBOROGH NH
— 603-878 5XXX7XXX8XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 GREENVILLE NH
— 603-879 0XXX1XXX · 2 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NASHUA NH
— 603-881 6XXX which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NASHUA NH
— 603-882 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NASHUA NH
— 603-883 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NASHUA NH
— 603-884 0XXX1XXX2XXX6XXX7XXX9XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NASHUA NH
— 603-885 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NASHUA NH
— 603-886 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NASHUA NH
— 603-888 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NASHUA NH
— 603-889 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NASHUA NH
— 603-890 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 SALEM NH
— 603-891 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NASHUA NH
— 603-893 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 SALEM NH
— 603-894 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 SALEM NH
— 603-895 7XXX which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 RAYMOND NH
— 603-896 0XXX1XXX2XXX3XXX4XXX6XXX9XXX · 6 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 SALEM NH
— 603-897 1XXX5XXX9XXX · 2 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NASHUA NH
— 603-898 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 SALEM NH
— 603-899 0XXX7XXX8XXX · 2 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 RINDGE NH
— 603-922 2XXX4XXX7XXX9XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NO STRATFD NH
— 603-924 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 PETERBROGH NH
— 603-926 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 HAMPTON NH
— 603-929 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 HAMPTON NH
— 603-934 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 FRANKLIN NH
— 603-942 1XXX2XXX6XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NORTHWOOD NH
— 603-964 0XXX which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 RYE BEACH NH
— 603-968 0XXX1XXX4XXX5XXX6XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 ASHLAND NH
— 603-989 2XXX7XXX8XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 PIKE 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.