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
2020-04-14 928-332-1XXX 1000–1999Assigned TELNYX LLC 073H WHITERIVER AZ
2020-04-14 928-339-8XXX 8000–8999Assigned TELNYX LLC 073H ALPINE AZ
2020-04-14 928-352-0XXX 0000–0999Assigned TELNYX LLC 073H KINGMAN AZ
2020-04-14 928-414-0XXX 0000–0999Assigned TELNYX LLC 073H HOLBROOK AZ
2020-04-14 928-455-0XXX 0000–0999Assigned TELNYX LLC 073H PEACH SPG AZ
2020-04-14 928-498-0XXX 0000–0999Assigned TELNYX LLC 073H SNOWFLAKE AZ
2020-04-14 928-558-1XXX 1000–1999Assigned TELNYX LLC 073H GREER AZ
2020-04-14 928-564-0XXX 0000–0999Assigned TELNYX LLC 073H MEADVIEW AZ
2020-04-14 928-766-1XXX 1000–1999Assigned TELNYX LLC 073H YUCCA AZ
2020-04-14 928-770-1XXX 1000–1999Assigned TELNYX LLC 073H MOHAVE VLY AZ
2020-04-14 928-940-1XXX 1000–1999Assigned TELNYX LLC 073H PINETOP AZ
2020-04-13 928-250-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F SAFFORD AZ
2020-04-13 928-588-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F WICKENBURG AZ
2020-04-10 928-331-4XXX 4000–4999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F GILA BEND AZ
2020-04-06 928-216-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PARKER AZ
2020-03-26 928-940-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PINETOP AZ
2020-03-25 928-270-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SPRINGERVL AZ
2020-03-23 928-296-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 BULLHEADCY AZ
2020-03-20 928-787-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 LUKACHUKAI AZ
2020-03-17 928-652-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 WIDE RUINS AZ
2020-03-17 928-653-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 RED VALLEY AZ
2020-03-17 928-654-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 GREASEWOOD AZ
2020-03-17 928-658-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 DENNEHOTSO AZ
2020-03-17 928-659-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 ROCK POINT AZ
2020-03-17 928-672-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 SHONTO AZ
2020-03-17 928-673-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 KAIBITO AZ
2020-03-17 928-686-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 LEUPP AZ
2020-03-17 928-698-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 LE CHEE AZ
2020-03-17 928-724-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 TSAILE AZ
2020-03-17 928-725-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PINONCTNWD AZ
2020-03-17 928-728-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 ROUGH ROCK AZ
2020-03-17 928-736-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 TOYEI AZ
2020-03-17 928-755-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 GANADO AZ
2020-03-10 928-888-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F GRANDCNYON AZ
2020-03-03 928-260-4XXX 4000–4999Assigned ONVOY, LLC - AZ 630E WIKIEUP AZ
2020-03-03 928-260-5XXX 5000–5999Assigned ONVOY, LLC - AZ 630E WIKIEUP AZ
2020-03-03 928-280-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 TUBA CITY AZ
2020-03-03 928-319-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 DILKON AZ
2020-03-03 928-327-6XXX 6000–6999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PRESCOTT AZ
2020-03-03 928-383-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 CHINLE AZ
2020-03-03 928-666-8XXX 8000–8999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F FLAGSTAFF AZ
2020-03-03 928-730-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 FTDEFIANCE AZ
2020-03-03 928-862-9XXX 9000–9999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SEDONA AZ
2020-03-02 928-489-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 KAYENTA AZ
2020-02-04 928-250-3XXX 3000–3999Assigned METROPCS, INC. 5562 SAFFORD AZ
2020-02-04 928-250-4XXX 4000–4999Assigned METROPCS, INC. 5562 SAFFORD AZ
2020-01-25 928-256-7XXX 7000–7999Assigned METROPCS, INC. 5562 YUMA AZ
2020-01-25 928-267-8XXX 8000–8999Assigned METROPCS, INC. 5562 PAYSON AZ
2020-01-22 928-250-5XXX 5000–5999Assigned TELNYX LLC 073H SAFFORD AZ
2020-01-14 928-459-0XXX 0000–0999Assigned METROPCS, INC. 5562 YUMA 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.