NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
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
— 602-955 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 602-956 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 602-957 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 602-958 not yet reported which blocks → AZ
— 602-959 not yet reported which blocks → AZ
— 602-971 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 602-973 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 602-976 not yet reported which blocks → AZ
— 602-977 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 602-978 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 602-980 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
— 602-989 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
— 602-992 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 602-993 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 602-995 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 602-996 not yet reported which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 602-997 3XXX which blocks → QWEST CORPORATION 9636 PHOENIX AZ
— 602-999 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
— 603-201 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 XXXXXXXXXX NH
— 603-204 0XXX1XXX2XXX3XXX4XXX5XXX · 4 holders which blocks → UNITED STATES CELLULAR - NH 6290 NASHUA NH
— 603-205 7XXX8XXX · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 PORTSMOUTH NH
— 603-206 0XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J MANCHESTER NH
— 603-208 0XXX1XXX2XXX3XXX · 3 holders which blocks → UNITED STATES CELLULAR - NH 6290 LYME NH
— 603-209 none assigned yet which blocks → UNITED STATES CELLULAR - NH 6290 KEENE NH
— 603-210 0XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J SUNCOOK NH
— 603-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NH
— 603-212 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 SALEM NH
— 603-214 3XXX which blocks → FREEDOM RING COMMUNICATIONS, LLC 8468 ERROL NH
— 603-215 5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FREEDOM RING COMMUNICATIONS, LLC 8468 BERLIN NH
— 603-216 0XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → COMCAST IP PHONE, LLC 318J DERRY NH
— 603-218 3XXX4XXX7XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J MANCHESTER NH
— 603-220 not yet reported which blocks → XXXXXXXXXX NH
— 603-221 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 NASHUA NH
— 603-222 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MANCHESTER NH
— 603-223 7XXX which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CONCORD NH
— 603-224 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CONCORD NH
— 603-225 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CONCORD NH
— 603-226 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CONCORD NH
— 603-227 6XXX which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CONCORD NH
— 603-228 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CONCORD NH
— 603-229 2XXX8XXX9XXX · 2 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CONCORD NH
— 603-230 0XXX2XXX8XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CONCORD NH
— 603-232 0XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → COMCAST IP PHONE, LLC 318J MANCHESTER NH
— 603-233 7XXX which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 NASHUA NH
— 603-236 0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 CAMPTON NH
— 603-237 1XXX2XXX7XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 COLEBROOK NH
— 603-238 0XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J PLYMOUTH NH
— 603-239 0XXX1XXX2XXX3XXX · 3 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 WINCHESTER NH
— 603-240 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MANCHESTER NH
— 603-242 0XXX1XXX2XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 TROY NH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.