NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 928
INTRADO COMMUNICATIONS, LLC 3
CSC WIRELESS, LLC 2
AHOI LLC 2
NEW CINGULAR WIRELESS PCS, LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 1
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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2023-10-31 928-732-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 LKHAVASUCY AZ
2023-10-30 928-258-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 AGUILA AZ
2023-10-25 928-456-5XXX 5000–5999Assigned ALLO COMMUNICATIONS LLC 907K FLAGSTAFF AZ
2023-10-23 928-509-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YUMA AZ
2023-10-23 928-509-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YUMA AZ
2023-10-12 928-232-7XXX 7000–7999Assigned TERRA NOVA TELECOM INC. 145J WICKENBURG AZ
2023-10-05 928-730-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FTDEFIANCE AZ
2023-10-05 928-730-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FTDEFIANCE AZ
2023-10-02 928-516-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 MOHAVE VLY AZ
2023-10-01 928-284-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 SEDONA AZ
2023-09-29 928-513-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 CLIFTON AZ
2023-09-28 928-405-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 FLAGSTAFF AZ
2023-09-28 928-405-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 FLAGSTAFF AZ
2023-09-28 928-438-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H FLAGSTAFF AZ
2023-09-28 928-438-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H FLAGSTAFF AZ
2023-09-28 928-438-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H FLAGSTAFF AZ
2023-09-28 928-438-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H FLAGSTAFF AZ
2023-09-28 928-438-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H FLAGSTAFF AZ
2023-09-21 928-270-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 SPRINGERVL AZ
2023-09-21 928-495-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PRESCOTT AZ
2023-09-21 928-495-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PRESCOTT AZ
2023-09-21 928-646-2XXX 2000–2999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SEDONA AZ
2023-09-20 928-512-5XXX 5000–5999Assigned ALLO COMMUNICATIONS LLC 907K SOMERTON AZ
2023-09-19 928-464-8XXX 8000–8999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F WICKENBURG AZ
2023-09-19 928-510-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 SOMERTON AZ
2023-09-19 928-510-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 SOMERTON AZ
2023-09-18 928-324-6XXX 6000–6999Assigned ONVOY, LLC - AZ 630E SAFFORD AZ
2023-09-18 928-324-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E SAFFORD AZ
2023-09-18 928-324-8XXX 8000–8999Assigned ONVOY, LLC - AZ 630E SAFFORD AZ
2023-09-18 928-375-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E SALOME AZ
2023-09-18 928-375-1XXX 1000–1999Assigned ONVOY, LLC - AZ 630E SALOME AZ
2023-09-18 928-491-1XXX 1000–1999Assigned ONVOY, LLC - AZ 630E GLOBE AZ
2023-09-18 928-491-2XXX 2000–2999Assigned ONVOY, LLC - AZ 630E GLOBE AZ
2023-09-18 928-491-3XXX 3000–3999Assigned ONVOY, LLC - AZ 630E GLOBE AZ
2023-09-18 928-491-4XXX 4000–4999Assigned ONVOY, LLC - AZ 630E GLOBE AZ
2023-09-18 928-491-5XXX 5000–5999Assigned ONVOY, LLC - AZ 630E GLOBE AZ
2023-09-18 928-506-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PIMA AZ
2023-09-18 928-506-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PIMA AZ
2023-09-18 928-509-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 YUMA AZ
2023-09-18 928-509-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 YUMA AZ
2023-09-18 928-509-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 YUMA AZ
2023-09-18 928-509-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 YUMA AZ
2023-09-18 928-596-3XXX 3000–3999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PAYSON AZ
2023-09-15 928-385-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E KINGMAN AZ
2023-09-15 928-390-6XXX 6000–6999Assigned ONVOY, LLC - AZ 630E SOMERTON AZ
2023-09-15 928-390-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E SOMERTON AZ
2023-09-15 928-398-6XXX 6000–6999Assigned ONVOY, LLC - AZ 630E SOMERTON AZ
2023-09-15 928-418-1XXX 1000–1999Assigned ONVOY, LLC - AZ 630E KINGMAN AZ
2023-09-15 928-451-9XXX 9000–9999Assigned ONVOY, LLC - AZ 630E SEDONA AZ
2023-09-15 928-470-2XXX 2000–2999Assigned ONVOY, LLC - AZ 630E PRESCOTT AZ

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.