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
2004-04-19 256-663 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STEVENSON AL
2004-03-26 256-672 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SCOTTSBORO AL
2004-03-25 256-266 1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CENTRE AL
2004-03-25 256-641 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GERALDINE AL
2004-03-25 256-744 7XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALBERTVL AL
2004-03-19 256-250 1XXX2XXX3XXX4XXX5XXX8XXX which blocks → PAETEC ITEL, LLC 829J DECATUR AL
2004-02-23 256-200 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 ARAB AL
2004-01-28 256-675 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 ALEXANDRCY AL
2003-12-30 256-631 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MADISON AL
2003-12-30 256-636 8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HANCEVILLE AL
2003-11-10 256-620 0–9 XXXall 10 · 5 holders which blocks → AT&T - LOCAL 7421 CULLMAN AL
2003-10-24 256-610 0–9 XXXall 10 · 3 holders which blocks → SOUTHERN COMMUNICATIONS SERVICES, INC. 6744 WEDOWEE AL
2003-10-15 256-443 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 FLORENCE AL
2003-10-02 256-618 0–9 XXXall 10 · 3 holders which blocks → SOUTHERN COMMUNICATIONS SERVICES, INC. 6744 ASHLAND AL
2003-09-15 256-619 3XXX4XXX5XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FORT PAYNE AL
2003-09-15 256-628 3XXX4XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SCOTTSBORO AL
2003-07-23 256-617 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MADISON AL
2003-06-06 256-850 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J MADISON AL
2003-05-21 256-615 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CENTURYLINK COMMUNICATIONS LLC - AL 7451 CULLMAN AL
2003-05-21 256-616 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CENTURYLINK COMMUNICATIONS LLC - AL 7451 DECATUR AL
2003-05-20 256-607 1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J ROGERSVL AL
2003-05-12 256-254 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MENTONE AL
2003-05-12 256-609 3XXX4XXX5XXX6XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 SCOTTSBORO AL
2003-05-07 256-613 4XXX5XXX6XXX7XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 GADSDEN AL
2003-05-06 256-612 3XXX4XXX5XXX6XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 HARTSELLE AL
2003-05-02 256-601 3XXX4XXX5XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 FYFFE AL
2003-05-02 256-605 8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 PISGAH AL
2003-04-29 256-252 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 ASHLAND AL
2003-04-18 256-621 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DECATUR AL
2003-04-18 256-625 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → METROPCS, INC. 5562 ALEXANDRCY AL
2003-04-18 256-626 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → METROPCS, INC. 5562 SYLACAUGA AL
2003-04-16 256-592 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → METROPCS, INC. 5562 TALLADEGA AL
2003-04-16 256-595 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 CULLMAN AL
2003-04-14 256-608 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 STEVENSON AL
2003-04-02 256-560 1XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 DECATUR AL
2003-04-02 256-591 2XXX3XXX4XXX which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 ANNISTON AL
2003-03-25 256-550 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ARAB AL
2003-03-19 256-408 3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ASHLAND AL
2003-03-18 256-559 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATHENS AL
2003-03-12 256-470 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALBERTVL AL
2003-03-12 256-502 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HARTSELLE AL
2003-03-12 256-507 5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CULLMAN AL
2003-03-12 256-513 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
2003-03-04 256-735 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 CULLMAN AL
2003-02-05 256-307 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 DADEVILLE AL
2003-01-22 256-516 1XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FORT PAYNE AL
2003-01-13 256-510 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 CHILDERSBG AL
2003-01-08 256-630 4XXX5XXX6XXX7XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 FORT PAYNE AL
2002-12-31 256-364 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → METROPCS, INC. 5562 FORT PAYNE AL
2002-12-31 256-374 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 ATHENS 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.