NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 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 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
2012-08-08 856-402 0–9 XXXall 10 · 4 holders which blocks → AT&T - LOCAL 7421 BEAVER BRK NJ
2012-08-08 867-447 not yet reported which blocks → Bell Mobility 6574 Yellowknife —
2012-08-08 928-285 0–9 XXXall 10 · 4 holders which blocks → AT&T - LOCAL 7421 SOMERTON AZ
2012-08-07 224-501 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2012-08-07 352-541 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 CROSS CITY FL
2012-08-07 515-218 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2012-08-07 581-722 not yet reported which blocks → Fido Solutions Inc. 5643 Saint-Georges-de-Beauce —
2012-08-07 585-443 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 GENESEO NY
2012-08-07 613-408 not yet reported which blocks → Bell Mobility 6574 Ottawa-Hull —
2012-08-07 661-446 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 DELANO CA
2012-08-07 705-825 not yet reported which blocks → Bell Mobility 6574 North Bay —
2012-08-07 709-717 not yet reported which blocks → Bell Mobility Aliant 329A Trepassey —
2012-08-07 709-718 not yet reported which blocks → Bell Mobility Aliant 329A Fermeuse —
2012-08-07 709-719 not yet reported which blocks → Bell Mobility Aliant 329A Buchans —
2012-08-07 949-324 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CAPITRNVLY CA
2012-08-06 239-624 0–9 XXXwhole prefix which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 NAPLES FL
2012-08-06 312-605 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J CHICGOZN01 IL
2012-08-06 312-610 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN01 IL
2012-08-06 434-303 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F GLADYS VA
2012-08-06 484-243 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHPHSBZN31 PA
2012-08-06 505-448 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NM 206F ALBUQURQUE NM
2012-08-06 816-882 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 CAMERON MO
2012-08-06 909-340 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BIGBEAR LK CA
2012-08-03 414-458 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN3 WI
2012-08-03 502-602 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K LA GRANGE KY
2012-08-03 502-825 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TAYLORSVL KY
2012-08-03 502-883 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K LOUISVILLE KY
2012-08-03 515-446 0–9 XXXall 10 · 4 holders which blocks → QWEST CORPORATION 9631 DES MOINES IA
2012-08-03 614-706 0–9 XXXall 10 · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K COLUMBUS OH
2012-08-03 812-612 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K MCUTCHANVL IN
2012-08-03 859-687 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K LEXINGTON KY
2012-08-03 949-245 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 CAPITRNVLY CA
2012-08-02 262-289 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN2 WI
2012-08-02 262-977 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 RACINE WI
2012-08-02 289-725 not yet reported which blocks → Bell Canada 8051 Oakville —
2012-08-02 720-307 0–9 XXXall 10 · 3 holders which blocks → AT&T - LOCAL 7421 ALLNSPKLYN CO
2012-08-02 803-567 0–9 XXXall 10 · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 COLUMBIA SC
2012-08-01 231-559 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E MCBAIN MI
2012-08-01 270-373 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NO GARRETT KY
2012-08-01 270-981 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K PAYNEVILLE KY
2012-08-01 307-823 0XXX1XXX2XXX3XXX6XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA WY-LLC 879G CHEYENNE WY
2012-08-01 541-507 0–9 XXXall 10 · 5 holders which blocks → QWEST CORPORATION 9638 GRANTSPASS OR
2012-08-01 681-434 0XXX1XXX2XXX3XXX4XXX5XXX · 4 holders which blocks → SHENTEL COMMUNICATIONS, LLC. - WV 489F GARY WV
2012-08-01 740-913 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SUNBURY OH
2012-07-31 262-226 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WAUKESHA WI
2012-07-31 414-242 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2012-07-30 205-720 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F BESSEMER AL
2012-07-30 336-826 0XXX1XXX7XXX · 2 holders which blocks → UNITED STATES CELLULAR - NC 6282 CRESTON NC
2012-07-30 438-265 not yet reported which blocks → Zayo Canada Inc. 8304 Pointe-Claire —
2012-07-30 587-438 not yet reported which blocks → Bell Mobility 6574 Calgary —

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.