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
2021-06-07 928-397-9XXX 9000–9999Assigned ONVOY, LLC - AZ 630E CASTLEROCK AZ
2021-06-07 928-465-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E BULLHDCYN AZ
2021-06-07 928-465-9XXX 9000–9999Assigned ONVOY, LLC - AZ 630E BULLHDCYN AZ
2021-06-07 928-610-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E BULLHEADCY AZ
2021-06-07 928-610-1XXX 1000–1999Assigned ONVOY, LLC - AZ 630E BULLHEADCY AZ
2021-06-07 928-610-2XXX 2000–2999Assigned ONVOY, LLC - AZ 630E BULLHEADCY AZ
2021-06-07 928-610-3XXX 3000–3999Assigned ONVOY, LLC - AZ 630E BULLHEADCY AZ
2021-06-07 928-719-2XXX 2000–2999Assigned ONVOY, LLC - AZ 630E GLOBE AZ
2021-06-07 928-719-3XXX 3000–3999Assigned ONVOY, LLC - AZ 630E GLOBE AZ
2021-06-07 928-857-1XXX 1000–1999Assigned ONVOY, LLC - AZ 630E CIBOLA AZ
2021-06-07 928-898-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E KINGMAN AZ
2021-06-07 928-898-1XXX 1000–1999Assigned ONVOY, LLC - AZ 630E KINGMAN AZ
2021-06-07 928-898-3XXX 3000–3999Assigned ONVOY, LLC - AZ 630E KINGMAN AZ
2021-06-07 928-898-4XXX 4000–4999Assigned ONVOY, LLC - AZ 630E KINGMAN AZ
2021-06-07 928-918-3XXX 3000–3999Assigned ONVOY, LLC - AZ 630E HARQUHLVLY AZ
2021-06-07 928-938-6XXX 6000–6999Assigned ONVOY, LLC - AZ 630E HYDER AZ
2021-06-04 928-397-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J CASTLEROCK AZ
2021-06-02 928-898-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J KINGMAN AZ
2021-05-26 928-671-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WICKENBURG AZ
2021-05-25 928-842-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PARKER AZ
2021-05-18 928-406-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WINSLOW AZ
2021-05-12 928-382-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALOME AZ
2021-05-12 928-822-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FREDONIA AZ
2021-05-12 928-844-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LITTLEFLD AZ
2021-05-12 928-875-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COLORADOCY AZ
2021-05-07 928-866-2XXX 2000–2999Assigned TON80 COMMUNICATIONS, LLC 516J MESQUITCRK AZ
2021-05-04 928-405-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FLAGSTAFF AZ
2021-04-30 928-307-6XXX 6000–6999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PAGE AZ
2021-04-30 928-331-5XXX 5000–5999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F GILA BEND AZ
2021-04-30 928-666-4XXX 4000–4999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F FLAGSTAFF AZ
2021-04-30 928-671-4XXX 4000–4999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F WICKENBURG AZ
2021-04-30 928-946-6XXX 6000–6999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SAFFORD AZ
2021-04-27 928-798-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YUMA AZ
2021-04-27 928-798-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YUMA AZ
2021-04-27 928-940-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PINETOP AZ
2021-04-27 928-940-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PINETOP AZ
2021-04-26 928-655-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 SOMERTON AZ
2021-04-24 928-610-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H BULLHEADCY AZ
2021-04-24 928-610-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H BULLHEADCY AZ
2021-04-23 928-267-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PAYSON AZ
2021-04-23 928-517-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PAYSON AZ
2021-04-21 928-946-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAFFORD AZ
2021-04-19 928-968-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PRESCOTT AZ
2021-04-16 928-877-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PARKER DAM AZ
2021-04-12 928-398-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SOMERTON AZ
2021-04-12 928-398-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SOMERTON AZ
2021-04-12 928-403-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PEACH SPG AZ
2021-04-12 928-403-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PEACH SPG AZ
2021-04-12 928-889-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LKHAVASUCY AZ
2021-04-02 928-981-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 FLAGSTAFF 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.