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 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
— 256-383 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 SHEFFIELD AL
— 256-384 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F HUNTSVILLE AL
— 256-385 8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CULLMAN AL
— 256-386 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 SHEFFIELD AL
— 256-389 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 SHEFFIELD AL
— 256-390 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GADSDEN AL
— 256-393 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GADSDEN AL
— 256-395 not yet reported which blocks → BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 9789 WADLEY AL
— 256-396 3XXX4XXX7XXX8XXX · 4 holders which blocks → BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 9789 LINEVILLE AL
— 256-397 3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J ALEXANDRCY AL
— 256-401 5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J SYLACAUGA AL
— 256-404 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SYLACAUGA AL
— 256-406 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AL 604E FORT PAYNE AL
— 256-409 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ALEXANDRCY AL
— 256-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 256-412 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ROGERSVL AL
— 256-413 2XXX5XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GADSDEN AL
— 256-416 not yet reported which blocks → SPOK, INC. 6630 DECATUR AL
— 256-420 not yet reported which blocks → ARDMORE TEL. CO., INC. 0280 ARDMORE AL
— 256-422 0XXX9XXX · 2 holders which blocks → PEOPLES TEL. CO., INC. 0314 GAYLESVL AL
— 256-423 not yet reported which blocks → ARDMORE TEL. CO., INC. 0280 ARDMORE AL
— 256-424 1XXX2XXX3XXX5XXX which blocks → PAETEC ITEL, LLC 829J HUNTSVILLE AL
— 256-426 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 HUNTSVILLE AL
— 256-427 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
— 256-428 not yet reported which blocks → CENTURYLINK COMMUNICATIONS LLC - AL 7451 HUNTSVILLE AL
— 256-429 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → AT&T - LOCAL 7421 HUNTSVILLE AL
— 256-430 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
— 256-431 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATHENS AL
— 256-432 0XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 DECATUR AL
— 256-433 not yet reported which blocks → SPOK, INC. 6630 HUNTSVILLE AL
— 256-434 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 ATHENS AL
— 256-435 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSONVL AL
— 256-436 7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 RUSSELLVL AL
— 256-437 5XXX6XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 STEVENSON AL
— 256-438 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GADSDEN AL
— 256-439 1XXX7XXX8XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GADSDEN AL
— 256-441 not yet reported which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 GADSDEN AL
— 256-442 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GADSDEN AL
— 256-444 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J ATHENS AL
— 256-445 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J DECATUR AL
— 256-446 1XXX2XXX3XXX4XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LEIGHTON AL
— 256-447 1XXX4XXX5XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PIEDMONT AL
— 256-448 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 FRANCISCO AL
— 256-449 0XXX1XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 9789 WOODLAND AL
— 256-451 none assigned yet which blocks → FARMERS TELECOMMUNICATIONS COOPERATIVE, INC. 0290 PISGAH AL
— 256-452 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 ANNISTON AL
— 256-453 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 ANNISTON AL
— 256-454 7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ANNISTON AL
— 256-456 5XXX which blocks → PAETEC ITEL, LLC 829J GADSDEN AL
— 256-457 7XXX8XXX · 2 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 HUNTSVILLE 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.