NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 19
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
2005-09-12 507-676 8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 OWATONNA MN
2005-09-12 507-993 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 ROCHESTER MN
2005-09-12 734-388 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 DEXTER MI
2005-09-12 830-733 0–9 XXXall 10 · 8 holders which blocks → WINDSTREAM COMMUNICATIONS TELECOM, L.P. - TX 1997 FREDECKSBG TX
2005-09-12 831-756 0–9 XXXall 10 · 2 holders which blocks → UTILITY TELECOM GROUP, LLC - CA 9262 SALINAS CA
2005-09-12 951-801 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 RIVERSIDE CA
2005-09-10 320-535 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → ONVOY, LLC - MN 184D LITCHFIELD MN
2005-09-09 432-755 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 PECOS TX
2005-09-08 250-294 not yet reported which blocks → Bell West Inc. 2933 Victoria —
2005-09-08 310-848 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HAWTHORNE CA
2005-09-08 310-988 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INGLEWOOD CA
2005-09-08 352-229 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OCALA FL
2005-09-08 714-837 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 WESTMINSTR CA
2005-09-08 719-352 0–9 XXXall 10 · 3 holders which blocks → XO COLORADO, LLC 8980 COLORDOSPG CO
2005-09-08 778-329 not yet reported which blocks → Bell West Inc. 2933 Vancouver —
2005-09-07 403-695 not yet reported which blocks → Bell West Inc. 2933 Calgary —
2005-09-07 443-452 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J BALTIMORE MD
2005-09-07 469-735 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 IRVING TX
2005-09-07 514-292 not yet reported which blocks → Bell Mobility 6574 Montreal —
2005-09-07 541-805 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 LA GRANDE OR
2005-09-07 604-865 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Sechelt —
2005-09-07 631-946 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SELDEN NY
2005-09-07 647-238 not yet reported which blocks → Bell Mobility 6574 Toronto —
2005-09-07 740-612 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GALLIPOLIS OH
2005-09-07 778-240 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Aldergrove —
2005-09-07 778-840 not yet reported which blocks → Bell Mobility 6574 Vancouver —
2005-09-07 780-641 not yet reported which blocks → Bell West Inc. 2933 Edmonton —
2005-09-07 805-769 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PASOROBLES CA
2005-09-07 812-822 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J BLOOMINGTN IN
2005-09-07 819-462 not yet reported which blocks → Bell Canada 8050 Maniwaki —
2005-09-07 864-280 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SENECA SC
2005-09-07 902-206 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Alberton —
2005-09-07 902-208 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Souris —
2005-09-06 252-955 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 ROCKYMOUNT NC
2005-09-06 254-201 not yet reported which blocks → GLOBALSTAR USA, INC. 3685 WACO TX
2005-09-06 254-219 not yet reported which blocks → GLOBALSTAR USA, INC. 3685 WACO TX
2005-09-06 254-240 not yet reported which blocks → GLOBALSTAR USA, INC. 3685 WACO TX
2005-09-06 260-577 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 POKAGON IN
2005-09-06 404-568 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 ATLANTA GA
2005-09-06 435-400 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 COALVILLE UT
2005-09-06 559-892 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 FRESNO CA
2005-09-06 701-751 not yet reported which blocks → MIDCONTINENT COMMUNICATIONS - ND 3065 BISMARCK ND
2005-09-06 814-431 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ERIE PA
2005-09-06 863-200 not yet reported which blocks → GLOBALSTAR USA, INC. 3685 AVON PARK FL
2005-09-06 863-203 not yet reported which blocks → GLOBALSTAR USA, INC. 3685 AVON PARK FL
2005-09-03 305-847 1XXX4XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL 8664 HOMESTEAD FL
2005-09-02 337-563 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → METROPCS, INC. 5562 CARLYSS LA
2005-09-02 337-630 0XXX2XXX3XXX9XXX · 2 holders which blocks → VOICESTREAM GSM I, LLC 150C CAMERON LA
2005-09-02 337-796 0XXX4XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 HACKBERRY LA
2005-09-02 403-472 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Calgary —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.