NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 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, last 30 days — NPA 334
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1
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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2017-06-30 334-661 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 DOTHAN AL
2017-06-29 334-554 0–9 XXXall 10 · 6 holders which blocks → MCC TELEPHONY LLC 593K ELBA AL
2017-06-22 334-681 0XXX1XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → FRONTIER COMMUNICATIONS OF THE SOUTH, LLC - AL 4464 CAMDEN AL
2017-04-17 334-923 0–9 XXXall 10 · 5 holders which blocks → MCC TELEPHONY LLC 593K ANDALUSIA AL
2017-02-01 334-490 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F GREENSBORO AL
2017-01-09 334-633 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AL 604E LINDEN AL
2016-10-04 334-747 0–9 XXXwhole prefix which blocks → LEVEL 3 TELECOM OF ALABAMA, LLC - AL 7327 MONTGOMERY AL
2016-08-12 334-802 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F HURTSBORO AL
2015-10-22 334-500 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J DOTHAN AL
2014-12-30 334-600 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 HOLTVILLE AL
2014-07-23 334-641 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F DEMOPOLIS AL
2013-12-12 334-801 0–9 XXXall 10 · 4 holders which blocks → WOW! INTERNET, CABLE AND PHONE 961J MONTGOMERY AL
2013-11-08 334-708 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 FT DEPOSIT AL
2013-08-13 334-597 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MCKENZIE AL
2013-08-13 334-908 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 COLUMBIA AL
2013-03-15 334-547 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J DOTHAN AL
2013-03-08 334-631 1XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K SHAWMUT AL
2013-03-07 334-630 0XXX1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K HUGULEY AL
2013-02-07 334-781 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 551G MONTGOMERY AL
2013-01-16 334-623 0–9 XXXall 10 · 7 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K WEST POINT AL
2012-08-22 334-609 0–9 XXXall 10 · 6 holders which blocks → MCC TELEPHONY LLC 593K THOMASVL AL
2012-02-28 334-602 0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 6 holders which blocks → TROY CABLEVISION, INC. - AL 208D ECHO AL
2012-02-27 334-305 not yet reported which blocks → TROY CABLEVISION, INC. - AL 208D DOTHAN AL
2012-01-12 334-540 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 PHENIXCITY AL
2012-01-05 334-336 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J SLOCOMB AL
2011-12-06 334-698 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K WICKSBURG AL
2011-11-17 334-489 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K ENTERPRISE AL
2011-11-17 334-605 0–9 XXXall 10 · 4 holders which blocks → PINE BELT BROADCASTING DBA PINE BELT TEL COMP SVCS 9736 SELMA AL
2011-09-27 334-330 not yet reported which blocks → TROY CABLEVISION, INC. - AL 208D NEWBROCKTN AL
2011-09-27 334-417 not yet reported which blocks → TROY CABLEVISION, INC. - AL 208D ENTERPRISE AL
2011-09-06 334-583 not yet reported which blocks → PINE BELT CELLULAR, INC. 4260 ALBERTA AL
2011-09-06 334-626 not yet reported which blocks → PINE BELT CELLULAR, INC. 4260 THOMASTON AL
2011-09-06 334-638 not yet reported which blocks → PINE BELT CELLULAR, INC. 4260 THOMASVL AL
2011-09-06 334-668 not yet reported which blocks → PINE BELT CELLULAR, INC. 4260 UNIONTOWN AL
2011-09-06 334-680 not yet reported which blocks → PINE BELT CELLULAR, INC. 4260 MARION AL
2011-09-06 334-882 not yet reported which blocks → PINE BELT CELLULAR, INC. 4260 CAMDEN AL
2011-09-06 334-973 not yet reported which blocks → PINE BELT CELLULAR, INC. 4260 PINE HILL AL
2011-09-06 334-995 not yet reported which blocks → PINE BELT CELLULAR, INC. 4260 ORRVILLE AL
2011-08-11 334-350 0–9 XXXall 10 · 3 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 DOTHAN AL
2011-07-13 334-331 not yet reported which blocks → WINDSTREAM ALABAMA, INC. 0302 ECLECTIC AL
2011-05-27 334-310 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F PRATTVILLE AL
2011-05-13 334-200 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 DOTHAN AL
2011-02-07 334-645 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C MAPLESVL AL
2010-09-21 334-544 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MONTGOMERY AL
2010-05-26 334-530 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MONTGOMERY AL
2010-05-13 334-589 0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MIDLAND CY AL
2010-02-18 334-557 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J MONTGOMERY AL
2010-02-16 334-245 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 TELECOM OF ALABAMA, LLC - AL 7327 MONTGOMERY AL
2009-12-21 334-564 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C THOMASVL AL
2009-12-08 334-425 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MONTGOMERY AL

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.