NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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 256
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 180
NEW CINGULAR WIRELESS PCS, LLC - GA 114
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 84
PAETEC ITEL, LLC 58
POWERTEL BIRMINGHAM LICENSES, INC. 49
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
— 256-458 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 GADSDEN AL
— 256-461 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MADISON AL
— 256-462 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 9789 MASSEY AL
— 256-463 6XXX9XXX · 2 holders which blocks → BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 9789 HEFLIN AL
— 256-464 1XXX2XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MADISON AL
— 256-465 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 FORT PAYNE AL
— 256-467 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 GADSDEN AL
— 256-471 not yet reported which blocks → BRINDLEE MOUNTAIN TELEPHONE LLC 0283 MORGANCITY AL
— 256-473 7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ANNISTON AL
— 256-475 0XXX which blocks → PEOPLES TEL. CO., INC. 0314 WHORTON AL
— 256-476 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 DECATUR AL
— 256-477 6XXX7XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALBERTVL AL
— 256-478 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GADSDEN AL
— 256-480 0XXX1XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 TALLADEGA AL
— 256-481 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GADSDEN AL
— 256-482 0XXX1XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 9789 ODEN RIDGE AL
— 256-484 0XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CENTRE AL
— 256-486 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 GUNTERSVL AL
— 256-487 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C SYLACAUGA AL
— 256-488 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 9789 DELTA AL
— 256-489 not yet reported which blocks → WOW! INTERNET, CABLE AND PHONE 961J HUNTSVILLE AL
— 256-490 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 GADSDEN AL
— 256-492 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GADSDEN AL
— 256-493 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TALLADEGA AL
— 256-494 2XXX6XXX7XXX8XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GADSDEN AL
— 256-495 1XXX5XXX8XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BRIDGEPORT AL
— 256-496 5XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 ALEXANDRCY AL
— 256-497 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 ATHENS AL
— 256-498 not yet reported which blocks → BRINDLEE MOUNTAIN TELEPHONE LLC 0283 MORGANCITY AL
— 256-500 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ALEXANDRCY AL
— 256-503 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 HUNTSVILLE AL
— 256-504 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 GADSDEN AL
— 256-505 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GUNTERSVL AL
— 256-506 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GUNTERSVL AL
— 256-508 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 HUNTSVILLE AL
— 256-509 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 HUNTSVILLE AL
— 256-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 256-512 7XXX8XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
— 256-514 not yet reported which blocks → SHARP COMMUNICATION, INC. 6885 HUNTSVILLE AL
— 256-517 0XXX2XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
— 256-518 6XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
— 256-519 0XXX1XXX5XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
— 256-520 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
— 256-521 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 TALLADEGA AL
— 256-522 1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J MOULTON AL
— 256-523 none assigned yet which blocks → PEOPLES TEL. CO., INC. 0314 SAND ROCK AL
— 256-524 0XXX9XXX · 2 holders which blocks → PEOPLES TEL. CO., INC. 0314 COLLINSVL AL
— 256-525 2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 ANNISTON AL
— 256-526 0XXX9XXX · 2 holders which blocks → PEOPLES TEL. CO., INC. 0314 LEESBURG AL
— 256-527 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.