NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

358 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 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
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 —
2005-09-02 765-818 1XXX8XXX · 2 holders which blocks → HANCOCK COMMUNICATIONS, INC. - IN 7459 MORRISTOWN IN
2005-09-02 819-862 not yet reported which blocks → Bell Canada 8050 Trois-Rivieres —
2005-09-02 920-560 0–9 XXXall 10 · 3 holders which blocks → TDS METROCOM, LLC 520K APPLETON WI
2005-09-01 219-707 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 VALPARAISO IN
2005-09-01 224-286 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LAKEZURICH IL
2005-09-01 267-739 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX which blocks → SCHUYLKILL MOBILE FONE, INC. 6739 PHLDLPHZN2 PA
2005-09-01 480-292 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-09-01 505-803 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2005-09-01 541-813 0–9 XXXall 10 · 7 holders which blocks → T-MOBILE USA, INC. 6529 BROOKINGS OR
2005-09-01 630-864 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 NAPERVILLE IL
2005-09-01 832-477 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2005-09-01 864-828 4XXX7XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 DUE WEST SC
2005-08-31 219-747 0XXX1XXX2XXX4XXX6XXX7XXX8XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J WOLCOTT IN
2005-08-31 403-775 not yet reported which blocks → GT Group Telecom Services Corp. 8506 Calgary —
2005-08-31 425-383 0–9 XXXwhole prefix which blocks → QWEST CORPORATION 9638 BELLEVUE WA
2005-08-31 514-664 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2005-08-31 567-712 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LIMA OH
2005-08-31 574-988 0XXX8XXX9XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J NEWCARLISL IN
2005-08-31 647-235 not yet reported which blocks → Bell Mobility 6574 Toronto —
2005-08-31 647-724 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Toronto —
2005-08-31 702-686 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LAS VEGAS NV
2005-08-31 778-785 not yet reported which blocks → GT Group Telecom Services Corp. 8506 Vancouver —
2005-08-31 803-832 0–9 XXXall 10 · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 COLUMBIA SC

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.