NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

349 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
2012-08-10 614-712 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 GROVEPORT OH
2012-08-10 740-731 0–9 XXXall 10 · 2 holders which blocks → FRONTIER NORTH, INC. - OH 0615 ATHENS OH
2012-08-10 819-720 not yet reported which blocks → TELUS Quebec 2243 Wakefield —
2012-08-09 204-709 not yet reported which blocks → Westman Media Cooperative Ltd 120F Souris —
2012-08-09 405-403 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
2012-08-09 513-801 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-08-09 614-788 0–9 XXXwhole prefix which blocks → OHIO BELL TEL CO 9321 COLUMBUS OH
2012-08-09 647-527 not yet reported which blocks → Bell Mobility 6574 Toronto —
2012-08-09 702-600 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 6458 LAS VEGAS NV
2012-08-09 706-701 0–9 XXXall 10 · 8 holders which blocks → DOVETEL COMMUNICATIONS, LLC - GA 362B DAHLONEGA GA
2012-08-08 207-520 0–9 XXXall 10 · 4 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 LEWISTON ME
2012-08-08 226-402 not yet reported which blocks → Bell Mobility 6574 Sarnia —
2012-08-08 310-596 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CULVERCITY CA
2012-08-08 570-671 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → AT&T - LOCAL 7421 SHENANDOAH PA
2012-08-08 705-917 not yet reported which blocks → Bell Mobility 6574 Peterborough —
2012-08-08 706-898 0–9 XXXall 10 · 5 holders which blocks → TRUVISTA COMMUNICATIONS OF GEORGIA, LLC - GA 847G TOCCOA GA
2012-08-08 774-205 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SAGAMORE MA
2012-08-08 814-554 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → AT&T - LOCAL 7421 HOLLIDYSBG PA
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

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.