NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 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, all time — NPA 603
CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 247
BELL ATLANTIC MOBILE, INC 74
PAETEC ITEL, LLC 58
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 44
COMCAST IP PHONE, LLC 40
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
— 603-869 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
— 603-871 3XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NH 4017 SANBORNVL NH
— 603-873 0XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NH 4017 SUNAPEE NH
— 603-874 1XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - NH 4017 MONROE NH
— 603-875 8XXX which blocks → UNION TEL. CO. 0049 ALTON 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
— 603-880 2XXX which blocks → TELNYX LLC 073H 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
— 603-887 not yet reported which blocks → GRANITE STATE TEL., INC. 0039 CHESTER 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
— 603-892 2XXX3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 CONCORD 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
— 603-903 0–9 XXXall 10 · 4 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 KEENE NH
— 603-910 0XXX2XXX5XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J HAMPTON NH
— 603-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NH
— 603-912 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J SALEM NH
— 603-913 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J MERRIMACK NH
— 603-922 2XXX4XXX7XXX9XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NO STRATFD NH
— 603-923 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NH 4017 ROCHESTER NH
— 603-924 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 PETERBROGH NH
— 603-925 6XXX which blocks → FREEDOM RING COMMUNICATIONS, LLC 8468 PETERBROGH NH
— 603-926 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 HAMPTON NH
— 603-927 6XXX which blocks → MERRIMACK COUNTY TEL. CO. 0047 SUTTON NH
— 603-928 1XXX7XXX · 2 holders which blocks → FREEDOM RING COMMUNICATIONS, LLC 8468 SUNCOOK NH
— 603-929 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 HAMPTON NH
— 603-930 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASHUA NH
— 603-932 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - NH 637E MANCHESTER NH
— 603-934 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 FRANKLIN NH
— 603-935 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J MANCHESTER NH
— 603-938 1XXX9XXX which blocks → MERRIMACK COUNTY TEL. CO. 0047 BRADFORD NH
— 603-939 4XXX which blocks → CONSOLIDATED COMMUNICATIONS OF MAINE COMPANY 3316 EASTCONWAY NH
— 603-941 0XXX1XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 WOLFEBORO NH
— 603-942 1XXX2XXX6XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NORTHWOOD NH

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.