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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 256-314 2XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 SHEFFIELD AL
— 256-315 6XXX7XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 TALLADEGA AL
— 256-316 8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
— 256-317 not yet reported which blocks → BRINDLEE MOUNTAIN TELEPHONE LLC 0283 ARAB AL
— 256-318 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DECATUR AL
— 256-319 not yet reported which blocks → CENTURYLINK COMMUNICATIONS LLC - AL 7451 MADISON AL
— 256-321 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATHENS AL
— 256-322 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 TALLADEGA AL
— 256-323 5XXX6XXX7XXX8XXX9XXX which blocks → METROPCS, INC. 5562 HUNTSVILLE AL
— 256-324 3XXX4XXX5XXX6XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 RUSSELLVL AL
— 256-325 not yet reported which blocks → WOW! INTERNET, CABLE AND PHONE 961J MADISON AL
— 256-326 2XXX3XXX5XXX6XXX7XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
— 256-327 not yet reported which blocks → CENTURYLINK COMMUNICATIONS LLC - AL 7451 HUNTSVILLE AL
— 256-329 4XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ALEXANDRCY AL
— 256-331 7XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 RUSSELLVL AL
— 256-332 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 RUSSELLVL AL
— 256-334 0–9 XXXall 10 · 5 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 ALBERTVL AL
— 256-335 not yet reported which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 FLORENCE AL
— 256-337 not yet reported which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 HUNTSVILLE AL
— 256-339 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 CULLMAN AL
— 256-340 6XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 DECATUR AL
— 256-341 1XXX2XXX3XXX6XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 DECATUR AL
— 256-342 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 ANNISTON AL
— 256-344 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 ATTALLA AL
— 256-346 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 CHILDERSBG AL
— 256-350 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 DECATUR AL
— 256-351 3XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 DECATUR AL
— 256-352 3XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HANCEVILLE AL
— 256-353 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 DECATUR AL
— 256-354 not yet reported which blocks → BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 9789 ASHLAND AL
— 256-355 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 DECATUR AL
— 256-356 1XXX5XXX6XXX7XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 RED BAY AL
— 256-357 1XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 9789 WEDOWEE AL
— 256-358 2XXX7XXX8XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MUNFORD AL
— 256-359 none assigned yet which blocks → NATIONAL TELEPHONE OF ALABAMA, INC. 0286 CHEROKEE AL
— 256-360 0XXX1XXX · 2 holders which blocks → NATIONAL TELEPHONE OF ALABAMA, INC. 0286 CHEROKEE AL
— 256-361 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 HUNTSVILLE AL
— 256-362 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 TALLADEGA AL
— 256-363 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 9789 MRNSCRSRDS AL
— 256-365 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 JACKSONVL AL
— 256-366 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 FLORENCE AL
— 256-367 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J FLORENCE AL
— 256-368 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 TALLADEGA AL
— 256-370 none assigned yet which blocks → NATIONAL TELEPHONE OF ALABAMA, INC. 0286 CHEROKEE AL
— 256-373 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 DADEVILLE AL
— 256-377 0XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 9789 ROCKFORD AL
— 256-378 9XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 CHILDERSBG AL
— 256-379 not yet reported which blocks → ARDMORE TEL. CO., INC. 0280 NEW MARKET AL
— 256-381 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 SHEFFIELD AL
— 256-382 not yet reported which blocks → PAETEC ITEL, LLC 829J 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.