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
2003-09-24 251-253 6XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATMORE AL
2003-09-15 251-923 0–9 XXXall 10 · 2 holders which blocks → TELEPAK NETWORKS, INC. - AL 947G FOLEY AL
2003-09-11 251-242 2XXX4XXX6XXX7XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 CHATOM AL
2003-09-02 251-254 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → SOUTHERN COMMUNICATIONS SERVICES, INC. 6744 FLOMATON AL
2003-09-02 251-255 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SOUTHERN COMMUNICATIONS SERVICES, INC. 6744 EVERGREEN AL
2003-08-21 251-224 0–9 XXXall 10 · 3 holders which blocks → MCC TELEPHONY OF THE SOUTH, LLC - AL 773F FOLEY AL
2003-07-29 251-243 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MOBILE AL
2003-05-01 251-238 6XXX7XXX8XXX9XXX · 2 holders which blocks → SOUTHERN COMMUNICATIONS SERVICES, INC. 6744 BREWTON AL
2003-04-18 251-228 4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FOLEY AL
2003-04-07 251-230 2XXX3XXX4XXX6XXX7XXX8XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 EVERGREEN AL
2003-03-14 251-225 3XXX4XXX6XXX8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MCINTOSH AL
2003-02-24 251-387 2XXX3XXX4XXX6XXX7XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 JACKSON AL
2002-12-30 251-235 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MCINTOSH AL
2002-12-17 251-229 4XXX5XXX7XXX8XXX which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 ATMORE AL
2002-09-17 251-236 3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 BREWTON AL
2002-09-10 251-227 4XXX7XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EVERGREEN AL
2002-09-10 251-363 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BREWTON AL
2002-08-27 251-202 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 BAYMINETTE AL
2002-08-19 251-241 2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 BREWTON AL
2002-07-31 251-410 not yet reported which blocks → TELEPAK NETWORKS, INC. - AL 947G MOBILE AL
2002-06-27 251-223 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FOLEY AL
2002-06-24 251-366 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 MOBILE AL
2002-06-12 251-445 not yet reported which blocks → TELEPAK NETWORKS, INC. - AL 947G MOBILE AL
2002-05-13 251-545 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MOBILE AL
2002-04-29 251-418 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MCINTOSH AL
2002-04-29 251-517 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 FAIRHOPE AL
2002-04-25 251-221 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOBILE AL
2002-04-25 251-233 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 FOLEY AL
2002-04-04 251-406 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2002-03-11 251-382 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → METROPCS, INC. 5562 MOBILE AL
2002-01-10 251-895 4XXX5XXX7XXX8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2002-01-03 251-623 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MOBILE AL
2001-08-24 251-786 6XXX7XXX8XXX which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MOBILE AL
2001-06-27 251-404 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2001-06-27 251-802 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2001-04-30 251-747 3XXX8XXX9XXX · 2 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 FOLEY AL
2001-02-26 251-706 7XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J MOBILE AL
2001-01-25 251-716 4XXX5XXX7XXX8XXX · 2 holders which blocks → METROPCS, INC. 5562 FAIRHOPE AL
2001-01-03 251-550 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 FOLEY AL
2001-01-03 251-599 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2001-01-03 251-656 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
— 251-204 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX AL
— 251-208 0XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOBILE AL
— 251-209 not yet reported which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MOBILE AL
— 251-210 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J FAIRHOPE AL
— 251-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 251-212 not yet reported which blocks → PAETEC ITEL, LLC 829J BREWTON AL
— 251-218 not yet reported which blocks → PAETEC ITEL, LLC 829J MCINTOSH AL
— 251-219 0XXX1XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOBILE AL
— 251-226 not yet reported which blocks → PAETEC ITEL, LLC 829J EVERGREEN 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.