NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

337 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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 25
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 12
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
2011-12-09 540-835 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 RADFORD VA
2011-12-09 587-886 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Calgary —
2011-12-09 587-890 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Calgary —
2011-12-09 612-254 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2011-12-09 617-936 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J BOSTON MA
2011-12-09 712-459 0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 HARTLEY IA
2011-12-09 717-925 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANCASTER PA
2011-12-09 757-793 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 NRFOLKZON2 VA
2011-12-09 775-301 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 6458 CARSONCITY NV
2011-12-09 804-548 0–9 XXXall 10 · 5 holders which blocks → VERIZON VIRGINIA, INC. 9213 RICHMOND VA
2011-12-09 812-203 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 PAOLI IN
2011-12-08 516-519 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NASSAUZN02 NY
2011-12-08 530-847 0–9 XXXall 10 · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C ALTA CA
2011-12-08 774-304 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F STURBRIDGE MA
2011-12-08 971-201 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2011-12-07 406-414 0–9 XXXall 10 · 3 holders which blocks → QWEST CORPORATION 9636 BOZEMAN MT
2011-12-07 413-234 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SPRINGFLD MA
2011-12-07 517-836 0–9 XXXall 10 · 7 holders which blocks → CLEAR RATE COMMUNICATIONS, LLC 046L EATON RPD MI
2011-12-07 534-220 0–9 XXXall 10 · 3 holders which blocks → AT&T ENTERPRISES, LLC 516C CHIPPEWFLS WI
2011-12-07 910-898 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J ROBBINS NC
2011-12-07 919-892 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J OXFORD NC
2011-12-07 970-707 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K GUNNISON CO
2011-12-06 203-456 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 DANBURY CT
2011-12-06 203-836 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2011-12-06 207-500 0–9 XXXall 10 · 6 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 LIVERMRFLS ME
2011-12-06 226-937 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Brantford —
2011-12-06 226-938 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Brantford —
2011-12-06 330-915 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CANTON OH
2011-12-06 334-698 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K WICKSBURG AL
2011-12-06 443-571 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2011-12-06 518-545 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
2011-12-06 587-300 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 High Level —
2011-12-06 857-214 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2011-12-06 860-215 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NORWICH CT
2011-12-05 226-224 not yet reported which blocks → Videotron Ltd. 383F London —
2011-12-05 506-940 not yet reported which blocks → Bragg Communications Inc. 421G Sackville —
2011-12-05 571-254 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 TRIANGLE VA
2011-12-05 657-224 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F ORANGE CA
2011-12-05 705-301 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Goulais —
2011-12-05 760-853 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 YUCCA VLY CA
2011-12-05 848-206 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 FARMINGDL NJ
2011-12-02 404-632 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2011-12-02 404-673 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2011-12-02 470-213 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 ATLANTA NE GA
2011-12-02 540-732 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J UNIONVILLE VA
2011-12-02 570-507 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 SCRANTON PA
2011-12-02 717-850 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 YORK PA
2011-12-02 970-855 0–9 XXXall 10 · 7 holders which blocks → COMCAST IP PHONE, LLC 318J EDWARDS CO
2011-12-01 352-599 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 CITRA FL
2011-12-01 438-808 not yet reported which blocks → Iristel Inc. 154E Montreal —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.