NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
— 318-951 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 NATCHITCHS LA
— 318-953 8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 MONROE LA
— 318-955 2XXX3XXX4XXX7XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 ALEXANDRIA LA
— 318-957 3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 RUSTON LA
— 318-958 not yet reported which blocks → LA
— 318-959 not yet reported which blocks → LA
— 318-963 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 SHREVEPORT LA
— 318-964 7XXX which blocks → BRIGHTSPEED OF LOUISIANA, LLC 0434 MANSURA LA
— 318-965 6XXX7XXX8XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BENTON LA
— 318-969 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOYCE LA
— 318-970 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX LA
— 318-971 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX LA
— 318-972 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX LA
— 318-976 not yet reported which blocks → LA
— 318-979 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX LA
— 318-980 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX LA
— 318-982 1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 6 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 FARMERVL LA
— 318-985 7XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF LOUISIANA, LLC 0434 MOREAUVL LA
— 318-986 1XXX2XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF SOUTH ARKANSAS, LLC 1727 SOJCT CITY LA
— 318-987 1XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HAUGHTON LA
— 318-992 not yet reported which blocks → BRIGHTSPEED OF LOUISIANA, LLC 0434 JENA LA
— 318-994 not yet reported which blocks → BRIGHTSPEED OF LOUISIANA, LLC 0434 SPRINGHILL LA
— 318-995 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 6 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 OIL CITY LA
— 318-996 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOORINGSPT LA
— 318-997 1XXX which blocks → BRIGHTSPEED OF LOUISIANA, LLC 0434 BORDELONVL LA
— 318-998 not yet reported which blocks → CENTURYLINK COMMUNICATIONS LLC - LA 2896 MONROE LA
— 318-999 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX LA
— 319-201 0–9 XXXall 10 · 6 holders which blocks → UNITED STATES CELLULAR - IA 6266 MTPLEASANT IA
— 319-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IA
— 319-219 4XXX5XXX6XXX7XXX8XXX which blocks → LOCAL TELEPHONE DATA SERVICES CORP. 2842 MTPLEASANT IA
— 319-221 not yet reported which blocks → QWEST CORPORATION 9631 CEDAR RPDS IA
— 319-222 1XXX3XXX4XXX5XXX · 4 holders which blocks → QWEST CORPORATION 9631 CEDARFALLS IA
— 319-223 not yet reported which blocks → SOUTH SLOPE COOP. TEL. CO., INC. 1298 NEWHALL IA
— 319-224 0XXX2XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 TROY MILLS IA
— 319-226 not yet reported which blocks → QWEST CORPORATION 9631 WATERLOO IA
— 319-227 not yet reported which blocks → SOUTH SLOPE COOP. TEL. CO., INC. 1298 NORWAY IA
— 319-228 not yet reported which blocks → VAN HORNE COOP. TEL. CO. 1320 VAN HORNE IA
— 319-230 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 WATERLOO IA
— 319-231 none assigned yet which blocks → UNITED STATES CELLULAR - IA 6266 WATERLOO IA
— 319-232 not yet reported which blocks → QWEST CORPORATION 9631 WATERLOO IA
— 319-233 not yet reported which blocks → QWEST CORPORATION 9631 WATERLOO IA
— 319-234 not yet reported which blocks → QWEST CORPORATION 9631 WATERLOO IA
— 319-235 not yet reported which blocks → QWEST CORPORATION 9631 WATERLOO IA
— 319-236 not yet reported which blocks → QWEST CORPORATION 9631 WATERLOO IA
— 319-239 none assigned yet which blocks → UNITED STATES CELLULAR - IA 6266 WATERLOO IA
— 319-240 none assigned yet which blocks → UNITED STATES CELLULAR - IA 6266 WATERLOO IA
— 319-246 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - IA 221F FT MADISON IA
— 319-247 not yet reported which blocks → QWEST CORPORATION 9631 CEDAR RPDS IA
— 319-248 not yet reported which blocks → PAETEC ITEL, LLC 829J IOWA CITY IA
— 319-253 2XXX3XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 HILLSBORO IA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.