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
2020-01-07 928-352-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KINGMAN AZ
2020-01-06 928-655-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SOMERTON AZ
2019-12-27 928-260-2XXX 2000–2999Assigned ONVOY, LLC - AZ 630E WIKIEUP AZ
2019-12-16 928-316-5XXX 5000–5999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PIMA AZ
2019-12-16 928-356-0XXX 0000–0999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PRESCOTT AZ
2019-12-16 928-612-5XXX 5000–5999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PAGE AZ
2019-12-16 928-888-3XXX 3000–3999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F GRANDCNYON AZ
2019-12-16 928-900-1XXX 1000–1999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F GLOBE AZ
2019-12-12 928-577-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 MOHAVE VLY AZ
2019-12-04 928-455-2XXX 2000–2999Assigned ONVOY, LLC - AZ 630E PEACH SPG AZ
2019-12-04 928-455-3XXX 3000–3999Assigned ONVOY, LLC - AZ 630E PEACH SPG AZ
2019-11-29 928-655-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SOMERTON AZ
2019-11-29 928-666-2XXX 2000–2999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F FLAGSTAFF AZ
2019-11-25 928-294-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 YUMA AZ
2019-11-19 928-419-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 FLAGSTAFF AZ
2019-11-15 928-800-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PRESCOTT AZ
2019-11-11 928-249-9XXX 9000–9999Assigned ONVOY, LLC - AZ 630E LKMHVRNCHS AZ
2019-11-11 928-605-4XXX 4000–4999Assigned ONVOY, LLC - AZ 630E BULLHEADCY AZ
2019-11-11 928-764-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E CASTLEROCK AZ
2019-11-11 928-766-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E YUCCA AZ
2019-11-11 928-770-2XXX 2000–2999Assigned ONVOY, LLC - AZ 630E MOHAVE VLY AZ
2019-11-07 928-412-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 LKHAVASUCY AZ
2019-11-07 928-800-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PRESCOTT AZ
2019-11-04 928-357-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 WINDOWROCK AZ
2019-10-31 928-888-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 GRANDCNYON AZ
2019-10-10 928-693-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PAGE AZ
2019-10-04 928-769-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PEACH SPG AZ
2019-10-01 928-662-5XXX 5000–5999Assigned ONVOY, LLC - AZ 630E PARKER DAM AZ
2019-09-26 928-264-8XXX 8000–8999Assigned ONVOY, LLC - AZ 630E EHRENBERG AZ
2019-09-16 928-356-7XXX 7000–7999Assigned FRACTEL, LLC 965H PRESCOTT AZ
2019-09-16 928-356-9XXX 9000–9999Assigned FRACTEL, LLC 965H PRESCOTT AZ
2019-09-12 928-577-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MOHAVE VLY AZ
2019-09-04 928-264-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F EHRENBERG AZ
2019-09-04 928-264-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F EHRENBERG AZ
2019-08-30 928-693-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PAGE AZ
2019-08-02 928-575-8XXX 8000–8999Assigned ONVOY, LLC - AZ 630E PARKER AZ
2019-08-02 928-662-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E PARKER DAM AZ
2019-08-02 928-851-8XXX 8000–8999Assigned ONVOY, LLC - AZ 630E BOUSE AZ
2019-08-02 928-857-8XXX 8000–8999Assigned ONVOY, LLC - AZ 630E CIBOLA AZ
2019-07-31 928-250-2XXX 2000–2999Assigned METROPCS, INC. 5562 SAFFORD AZ
2019-07-31 928-267-2XXX 2000–2999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PAYSON AZ
2019-07-31 928-668-2XXX 2000–2999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F WICKENBURG AZ
2019-07-29 928-575-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PARKER AZ
2019-06-26 928-632-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PRESCOTT AZ
2019-06-20 928-412-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LKHAVASUCY AZ
2019-06-17 928-419-1XXX 1000–1999Assigned CSC WIRELESS, LLC 425J FLAGSTAFF AZ
2019-06-11 928-236-9XXX 9000–9999Assigned ONVOY, LLC - AZ 630E SOMERTON AZ
2019-06-11 928-249-8XXX 8000–8999Assigned ONVOY, LLC - AZ 630E LKMHVRNCHS AZ
2019-06-11 928-260-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E WIKIEUP AZ
2019-06-11 928-260-1XXX 1000–1999Assigned ONVOY, LLC - AZ 630E WIKIEUP 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.