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
2021-04-01 928-798-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 YUMA AZ
2021-04-01 928-798-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 YUMA AZ
2021-03-29 928-798-9XXX 9000–9999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F YUMA AZ
2021-03-29 928-963-5XXX 5000–5999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SEDONA AZ
2021-03-29 928-968-9XXX 9000–9999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PRESCOTT AZ
2021-03-23 928-719-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F GLOBE AZ
2021-03-23 928-900-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F GLOBE AZ
2021-03-23 928-900-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F GLOBE AZ
2021-03-23 928-900-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F GLOBE AZ
2021-03-23 928-900-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F GLOBE AZ
2021-03-17 928-399-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEDONA AZ
2021-03-17 928-842-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PARKER AZ
2021-03-17 928-975-1XXX 1000–1999Assigned STRATUS NETWORKS 495J YUMA AZ
2021-03-16 928-398-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SOMERTON AZ
2021-03-16 928-398-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SOMERTON AZ
2021-03-12 928-898-2XXX 2000–2999Assigned ONVOY, LLC - AZ 630E KINGMAN AZ
2021-03-11 928-693-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PAGE AZ
2021-03-11 928-981-3XXX 3000–3999Assigned SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 4146 FLAGSTAFF AZ
2021-03-08 928-610-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BULLHEADCY AZ
2021-03-08 928-610-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BULLHEADCY AZ
2021-03-08 928-798-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E YUMA AZ
2021-03-04 928-598-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 WIKIEUP AZ
2021-03-04 928-598-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 WIKIEUP AZ
2021-03-04 928-598-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 WIKIEUP AZ
2021-03-02 928-610-6XXX 6000–6999Assigned ONVOY, LLC - AZ 630E BULLHEADCY AZ
2021-03-01 928-981-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FLAGSTAFF AZ
2021-02-24 928-391-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 KINGMAN AZ
2021-02-24 928-882-5XXX 5000–5999Assigned ONVOY, LLC - AZ 630E WINSLOW AZ
2021-02-24 928-882-6XXX 6000–6999Assigned ONVOY, LLC - AZ 630E WINSLOW AZ
2021-02-23 928-889-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 LKHAVASUCY AZ
2021-02-19 928-340-0XXX 0000–0999Assigned TELNYX LLC 073H SEDONA AZ
2021-02-19 928-419-8XXX 8000–8999Assigned TELNYX LLC 073H FLAGSTAFF AZ
2021-02-19 928-471-9XXX 9000–9999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PAYSON AZ
2021-02-19 928-946-0XXX 0000–0999Assigned TELNYX LLC 073H SAFFORD AZ
2021-02-10 928-294-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 YUMA AZ
2021-02-10 928-391-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 KINGMAN AZ
2021-02-10 928-391-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 KINGMAN AZ
2021-02-10 928-391-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 KINGMAN AZ
2021-02-08 928-240-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 HEBER AZ
2021-02-08 928-370-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MARBLECNYN AZ
2021-02-08 928-671-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WICKENBURG AZ
2021-02-02 928-403-0XXX 0000–0999Assigned TELNYX LLC 073H PEACH SPG AZ
2021-02-01 928-538-1XXX 1000–1999Assigned ONVOY, LLC - AZ 630E BULLHEADCY AZ
2021-02-01 928-538-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E BULLHEADCY AZ
2021-01-30 928-398-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SOMERTON AZ
2021-01-30 928-929-0XXX 0000–0999Assigned TELNYX LLC 073H GILA BEND AZ
2021-01-29 928-391-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 KINGMAN AZ
2021-01-29 928-391-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KINGMAN AZ
2021-01-29 928-668-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WICKENBURG AZ
2021-01-27 928-538-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H BULLHEADCY 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.