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 308
NEW CINGULAR WIRELESS PCS, LLC - IL 57
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 54
QWEST CORPORATION 42
GREAT PLAINS COMMUNICATIONS, INC. 30
CITIZENS TELECOM OF NE LLC DBA FRONTIER COM OF NE 28
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
2011-02-14 308-339 8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 GRAND IS NE
2010-02-23 308-313 0XXX2XXX3XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → MOBIUS COMMUNICATIONS COMPANY - NE 9764 ALLIANCE NE
2010-02-19 308-545 1XXX2XXX3XXX5XXX7XXX · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K BAYARD NE
2009-12-14 308-218 0–9 XXXall 10 · 6 holders which blocks → WINDSTREAM COMMUNICATIONS OF THE MIDEWEST INC - NE 7816 GRAND IS NE
2009-11-25 308-663 3XXX6XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 GRAND IS NE
2009-09-17 308-767 not yet reported which blocks → GREAT PLAINS BROADBAND, INC. - NE 012E BROKEN BOW NE
2009-08-25 308-424 0–9 XXXall 10 · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K MITCHELL NE
2009-08-19 308-275 0–9 XXXall 10 · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K GERING NE
2009-08-19 308-439 0–9 XXXall 10 · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K MINATARE NE
2009-08-19 308-575 0XXX1XXX which blocks → CHARTER IP ENABLED SERVICES, LLC 792K SCOTSBLUFF NE
2009-08-19 308-925 1XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K MORRILL NE
2008-10-22 308-562 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SCOTSBLUFF NE
2008-07-30 308-981 not yet reported which blocks → ALLO COMMUNICATIONS LLC 907K SCOTSBLUFF NE
2008-06-17 308-203 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 8 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K SIDNEY NE
2008-03-05 308-629 1XXX2XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → N.E. COLORADO CELLULAR, INC. 6874 ALLIANCE NE
2007-10-31 308-675 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K GRAND IS NE
2007-08-01 308-761 not yet reported which blocks → ALLO COMMUNICATIONS, LLC - NE 710A ALLIANCE NE
2007-01-12 308-594 0XXX1XXX2XXX3XXX4XXX5XXX · 3 holders which blocks → ONVOY, LLC - NE 549E WOOD RIVER NE
2006-08-08 308-747 not yet reported which blocks → GREAT PLAINS BROADBAND, INC. - NE 012E CHADRON NE
2006-04-18 308-566 1XXX2XXX5XXX7XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 CHAPPELL NE
2006-01-27 308-655 1XXX2XXX3XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 ARAPAHOE NE
2005-12-29 308-455 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 KEARNEY NE
2005-11-08 308-353 3XXX5XXX7XXX · 2 holders which blocks → N.E. COLORADO CELLULAR, INC. 6874 GRANT NE
2005-09-30 308-765 3XXX4XXX5XXX6XXX7XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 SCOTSBLUFF NE
2005-04-23 308-883 not yet reported which blocks → N.E. COLORADO CELLULAR, INC. 6874 IMPERIAL NE
2005-04-22 308-770 not yet reported which blocks → N.E. COLORADO CELLULAR, INC. 6874 OSHKOSH NE
2005-04-15 308-414 0–9 XXXall 10 · 4 holders which blocks → UNITED STATES CELLULAR - NE 6263 IMPERIAL NE
2005-02-11 308-633 not yet reported which blocks → ALLO COMMUNICATIONS LLC 907K SCOTSBLUFF NE
2004-10-13 308-225 0–9 XXXall 10 · 5 holders which blocks → N.E. COLORADO CELLULAR, INC. 6874 SCOTSBLUFF NE
2004-09-07 308-890 not yet reported which blocks → N.E. COLORADO CELLULAR, INC. 6874 CHAPPELL NE
2004-08-23 308-230 0–9 XXXall 10 · 6 holders which blocks → N.E. COLORADO CELLULAR, INC. 6874 KIMBALL NE
2004-08-19 308-217 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 LEXINGTON NE
2004-06-01 308-392 3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GRAND IS NE
2004-05-18 308-201 1XXX2XXX3XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 ERICSON NE
2004-05-18 308-202 7XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 ARCADIA NE
2004-05-18 308-212 1XXX2XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 ANSLEY NE
2004-05-18 308-214 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 TAYLOR NE
2004-05-18 308-215 1XXX2XXX5XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 SARGENT NE
2004-05-18 308-216 2XXX3XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 SHELTON NE
2004-05-18 308-219 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 NORTH LOUP NE
2004-05-14 308-823 not yet reported which blocks → PINPOINT COMMUNICATIONS, INC. - NE 2309 OXFORD NE
2004-04-08 308-207 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks → N.E. COLORADO CELLULAR, INC. 6874 CHADRON NE
2004-02-06 308-293 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 KEARNEY NE
2004-01-27 308-241 3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 KIMBALL NE
2003-10-24 308-250 not yet reported which blocks → N.E. COLORADO CELLULAR, INC. 6874 SIDNEY NE
2003-08-26 308-222 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 MILLER NE
2003-08-26 308-223 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 GREELEY NE
2003-01-30 308-528 1XXX2XXX · 2 holders which blocks → UNITED STATES CELLULAR - NE 6263 MINDEN NE
2003-01-08 308-229 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 LYMAN NE
2002-11-18 308-571 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → UNITED STATES CELLULAR - NE 6263 ST PAUL NE

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.