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
— 603-766 not yet reported which blocks → FREEDOM RING COMMUNICATIONS, LLC 8468 PORTSMOUTH NH
— 603-767 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER NH
— 603-768 0XXX1XXX4XXX7XXX9XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 DANBURY NH
— 603-769 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NH 4017 MILFORD NH
— 603-770 not yet reported which blocks → BELL ATLANTIC MOBILE, INC 6386 EXETER 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
— 603-774 not yet reported which blocks → DUNBARTON TEL. CO. 0043 DUNBARTON NH
— 603-775 1XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 EXETER NH
— 603-776 2XXX6XXX which blocks → UNION TEL. CO. 0049 BARNSTEAD 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
— 603-779 0XXX1XXX3XXX5XXX6XXX8XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 PLYMOUTH NH
— 603-780 none assigned yet which blocks → LEVEL 3 COMMUNICATIONS, LLC - NH 4017 CANAAN NH
— 603-781 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER NH
— 603-782 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NH 4017 MANCHESTER NH
— 603-783 1XXX2XXX3XXX5XXX6XXX7XXX · 6 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CANTERBURY NH
— 603-784 2XXX4XXX5XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 PETERBROGH NH
— 603-785 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANCHESTER NH
— 603-786 4XXX5XXX6XXX7XXX · 4 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 RUMNEY NH
— 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
— 603-789 none assigned yet which blocks → FREEDOM RING COMMUNICATIONS, LLC 8468 DANBURY NH
— 603-791 0XXX4XXX which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NASHUA NH
— 603-792 not yet reported which blocks → FREEDOM RING COMMUNICATIONS, LLC 8468 MANCHESTER NH
— 603-795 0XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 LYME NH
— 603-796 7XXX8XXX · 2 holders which blocks → KEARSARGE TEL. CO. 0045 BOSCAWEN NH
— 603-797 0XXX1XXX2XXX3XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 PLAISTOW NH
— 603-798 9XXX which blocks → KEARSARGE TEL. CO. 0045 CHICHESTER NH
— 603-799 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → METROPCS, INC. 5562 MANCHESTER NH
— 603-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NH
— 603-812 1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 PORTSMOUTH NH
— 603-816 none assigned yet which blocks → FREEDOM RING COMMUNICATIONS, LLC 8468 NASHUA NH
— 603-819 0XXX1XXX3XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NH 4017 PLAISTOW NH
— 603-821 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J NASHUA NH
— 603-822 1XXX2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J ROCHESTER NH
— 603-823 0XXX1XXX2XXX3XXX4XXX6XXX · 6 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 FRANCONIA NH
— 603-824 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 8 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 SALEM 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
— 603-829 3XXX4XXX5XXX6XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 7778 SUNAPEE NH
— 603-832 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J LACONIA NH
— 603-834 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J DOVER 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
— 603-839 1XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K FARMINGTON NH
— 603-841 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J SOMERSWTH NH
— 603-842 0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J DOVER 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.