NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 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, last 30 days — NPA 251
WIDE VOICE, LLC - AL 1
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
— 251-231 8XXX9XXX which blocks → PAETEC ITEL, LLC 829J JACKSON AL
— 251-232 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
— 251-234 3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
— 251-237 1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J FLOMATON AL
— 251-239 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J BAYMINETTE AL
— 251-245 8XXX which blocks → PAETEC ITEL, LLC 829J BELLEFONTN AL
— 251-246 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON AL
— 251-247 4XXX5XXX6XXX8XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON AL
— 251-248 not yet reported which blocks → FRONTIER COMMUNICATIONS OF THE SOUTH, LLC - AL 0306 REPTON AL
— 251-249 8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J CITRONELLE AL
— 251-258 not yet reported which blocks → FRONTIER COMMUNICATIONS OF THE SOUTH, LLC - AL 0306 GOSPORT AL
— 251-267 7XXX8XXX · 2 holders which blocks → FRONTIER COMMUNICATIONS OF THE SOUTH, LLC - AL 0306 FRISCOCITY AL
— 251-268 8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J MT VERNON AL
— 251-275 none assigned yet which blocks → BUTLER TEL. CO., INC. 0284 GROVE HILL AL
— 251-276 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 9789 COFFEEVL AL
— 251-282 none assigned yet which blocks → FRONTIER COMMUNICATIONS OF THE SOUTH, LLC - AL 0306 FINCHBURG AL
— 251-294 6XXX which blocks → FRONTIER COMMUNICATIONS OF THE SOUTH, LLC - AL 4464 HUXFORD AL
— 251-295 1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
— 251-296 6XXX8XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 FLOMATON AL
— 251-297 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AL 604E FLOMATON AL
— 251-302 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MONROEVL AL
— 251-304 4XXX5XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOBILE AL
— 251-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 251-315 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H EVERGREEN AL
— 251-316 0XXX1XXX4XXX6XXX7XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOBILE AL
— 251-327 1XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
— 251-330 5XXX6XXX8XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOBILE AL
— 251-331 not yet reported which blocks → SOUTHERN COMMUNICATIONS SERVICES, INC. 6744 MOBILE AL
— 251-338 7XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J MOBILE AL
— 251-340 2XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOBILE AL
— 251-341 2XXX7XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOBILE AL
— 251-342 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOBILE AL
— 251-343 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOBILE AL
— 251-344 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOBILE AL
— 251-345 3XXX4XXX6XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOBILE AL
— 251-352 not yet reported which blocks → SPOK, INC. 6630 MOBILE AL
— 251-357 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 4 holders which blocks → MCC TELEPHONY OF THE SOUTH, LLC - AL 773F HUXFORD AL
— 251-359 9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 ATMORE AL
— 251-360 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → BUTLER TEL. CO., INC. 0284 GROVE HILL AL
— 251-362 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MONROEVL AL
— 251-367 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 MOBILE AL
— 251-368 not yet reported which blocks → FRONTIER COMMUNICATIONS OF THE SOUTH, LLC - AL 4464 ATMORE AL
— 251-369 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → AT&T - LOCAL 7421 EVERGREEN AL
— 251-370 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → AT&T - LOCAL 7421 MOBILE AL
— 251-371 not yet reported which blocks → SPOK, INC. 6630 MOBILE AL
— 251-375 0XXX1XXX4XXX6XXX · 3 holders which blocks → LEVEL 3 TELECOM OF ALABAMA, LLC - AL 7327 MOBILE AL
— 251-377 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
— 251-378 1XXX2XXX5XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J MOBILE AL
— 251-379 2XXX3XXX5XXX · 2 holders which blocks → METROPCS, INC. 5562 MOBILE AL
— 251-380 6XXX7XXX8XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOBILE 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.