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
2001-09-10 256-392 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → AT&T - LOCAL 7421 ALEXANDRCY AL
2001-07-26 256-343 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ANNISTON AL
2001-05-02 256-750 4XXX6XXX7XXX8XXX · 2 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 ALEXANDRCY AL
2001-05-02 256-755 3XXX4XXX5XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 HUNTSVILLE AL
2001-04-26 256-349 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 FLORENCE AL
2001-04-21 256-347 3XXX5XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CULLMAN AL
2001-04-21 256-371 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 ANNISTON AL
2001-04-17 256-328 7XXX8XXX · 2 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 GADSDEN AL
2001-04-11 256-345 not yet reported which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 DECATUR AL
2001-04-11 256-348 not yet reported which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 HUNTSVILLE AL
2001-04-11 256-394 not yet reported which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 FLORENCE AL
2001-03-23 256-298 5XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOAZ AL
2001-03-09 256-242 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SECTION AL
2001-02-27 256-338 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 CULLMAN AL
2001-01-29 256-286 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → METROPCS, INC. 5562 HARTSELLE AL
2001-01-29 256-289 0XXX2XXX5XXX7XXX8XXX · 4 holders which blocks → METROPCS, INC. 5562 MADISON AL
2001-01-29 256-305 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 ATTALLA AL
2001-01-29 256-320 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → METROPCS, INC. 5562 SHEFFIELD AL
2001-01-29 256-330 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → METROPCS, INC. 5562 OHATCHEE AL
2001-01-05 256-302 5XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 GUNTERSVL AL
— 256-201 2XXX5XXX7XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HEFLIN AL
— 256-204 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX AL
— 256-207 0XXX1XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 SYLACAUGA AL
— 256-208 3XXX5XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 SYLACAUGA AL
— 256-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 256-212 0XXX6XXX7XXX8XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ALEXANDRCY AL
— 256-213 0XXX1XXX6XXX7XXX8XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
— 256-214 3XXX4XXX5XXX7XXX8XXX9XXX which blocks → METROPCS, INC. 5562 DECATUR AL
— 256-215 1XXX2XXX6XXX8XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ALEXANDRCY AL
— 256-216 4XXX7XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ATHENS AL
— 256-217 3XXX4XXX5XXX7XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
— 256-218 not yet reported which blocks → BRIGHTSPEED OF ALABAMA, LLC - SOUTHERN 9788 SCOTTSBORO AL
— 256-219 not yet reported which blocks → SPOK, INC. 6630 HUNTSVILLE AL
— 256-220 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
— 256-221 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 DECATUR AL
— 256-223 3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 TALLADEGA AL
— 256-225 not yet reported which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 ANNISTON AL
— 256-226 6XXX8XXX · 2 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 ALBERTVL AL
— 256-227 not yet reported which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 DECATUR AL
— 256-228 2XXX5XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF ALABAMA, LLC - SOUTHERN 9788 SECTION AL
— 256-229 1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LEXINGTON AL
— 256-230 4XXX7XXX8XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ATHENS AL
— 256-231 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ANNISTON AL
— 256-232 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ATHENS AL
— 256-233 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ATHENS AL
— 256-234 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ALEXANDRCY AL
— 256-235 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ANNISTON AL
— 256-236 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ANNISTON AL
— 256-237 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ANNISTON AL
— 256-238 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ANNISTON 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.