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
2002-12-31 256-388 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 ALBERTVL AL
2002-12-26 256-501 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 6 holders which blocks → METROPCS, INC. 5562 ATHENS AL
2002-10-14 256-515 4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GADSDEN AL
2002-10-03 256-668 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 RUSSELLVL AL
2002-10-01 256-499 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → AT&T - LOCAL 7421 ANNISTON AL
2002-08-28 256-369 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 SYLACAUGA AL
2002-08-28 256-474 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 TALLADEGA AL
2002-08-27 256-450 not yet reported which blocks → CENTURYLINK COMMUNICATIONS LLC - AL 7451 HUNTSVILLE AL
2002-07-31 256-419 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J ANNISTON AL
2002-07-31 256-459 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J GADSDEN AL
2002-07-16 256-293 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 GUNTERSVL AL
2002-07-16 256-649 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 TALLADEGA AL
2002-06-20 256-278 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ATHENS AL
2002-06-20 256-280 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 DECATUR AL
2002-06-20 256-418 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 FORT PAYNE AL
2002-06-20 256-455 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ALBERTVL AL
2002-06-20 256-841 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 CULLMAN AL
2002-06-14 256-472 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 VETO AL
2002-06-04 256-633 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 FLORENCE AL
2002-05-20 256-206 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATHENS AL
2002-05-20 256-425 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → PAETEC ITEL, LLC 829J HUNTSVILLE AL
2002-05-07 256-273 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 FORT PAYNE AL
2002-05-07 256-677 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 GUNTERSVL AL
2002-05-07 256-867 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ATHENS AL
2002-04-25 256-417 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 HUNTSVILLE AL
2002-04-25 256-460 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 RUSSELLVL AL
2002-04-25 256-712 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 FLORENCE AL
2002-04-25 256-861 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 SYLACAUGA AL
2002-04-10 256-405 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ANNISTON AL
2002-04-10 256-485 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 GADSDEN AL
2002-04-03 256-375 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TALLADEGA AL
2002-04-03 256-479 not yet reported which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 HUNTSVILLE AL
2002-04-03 256-483 3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ROGERSVL AL
2002-04-03 256-585 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
2002-03-21 256-265 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
2002-03-21 256-372 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
2002-03-07 256-542 0XXX1XXX3XXX7XXX8XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MADISON AL
2002-03-06 256-415 3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 FLORENCE AL
2002-02-19 256-469 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → CENTURYLINK COMMUNICATIONS LLC - AL 7451 HUNTSVILLE AL
2002-01-31 256-391 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 SYLACAUGA AL
2002-01-31 256-414 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ALEXANDRCY AL
2002-01-03 256-466 not yet reported which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 DECATUR AL
2001-11-19 256-468 not yet reported which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 HUNTSVILLE AL
2001-11-16 256-713 not yet reported which blocks → PAETEC ITEL, LLC 829J HUNTSVILLE AL
2001-11-05 256-399 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 GADSDEN AL
2001-11-05 256-403 7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ANNISTON AL
2001-11-01 256-402 3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J DELTA AL
2001-10-22 256-380 3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J SKYLINE AL
2001-09-28 256-410 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 MOULTON AL
2001-09-26 256-398 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 RUSSELLVL 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.