NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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, all time — NPA 928
PEERLESS NETWORK OF ARIZONA, LLC - AZ 119
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
2026-07-24 928-557-8XXX 8000–8999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SAFFORD AZ
2026-06-18 928-693-2XXX 2000–2999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PAGE AZ
2026-06-18 928-722-8XXX 8000–8999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SOMERTON AZ
2026-05-20 928-708-8XXX 8000–8999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PRESCOTT AZ
2024-04-10 928-510-7XXX 7000–7999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SOMERTON AZ
2023-09-21 928-646-2XXX 2000–2999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SEDONA AZ
2023-09-19 928-464-8XXX 8000–8999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F WICKENBURG AZ
2023-09-18 928-596-3XXX 3000–3999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PAYSON AZ
2023-08-09 928-882-7XXX 7000–7999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F WINSLOW AZ
2023-08-09 928-988-9XXX 9000–9999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F YUMA AZ
2022-04-18 928-390-9XXX 9000–9999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SOMERTON AZ
2022-04-18 928-878-0XXX 0000–0999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F GILA BEND AZ
2021-10-21 928-413-9XXX 9000–9999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PIMA 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
2021-03-29 928-798-9XXX 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
2021-02-19 928-471-9XXX 9000–9999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PAYSON AZ
2021-01-08 928-398-8XXX 8000–8999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SOMERTON AZ
2020-12-07 928-361-8XXX 8000–8999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PIMA AZ
2020-08-28 928-544-0XXX 0000–0999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F CASTLEROCK AZ
2020-04-10 928-331-4XXX 4000–4999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F GILA BEND AZ
2020-03-03 928-327-6XXX 6000–6999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PRESCOTT AZ
2020-03-03 928-666-8XXX 8000–8999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F FLAGSTAFF AZ
2020-03-03 928-862-9XXX 9000–9999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SEDONA 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
2019-11-29 928-666-2XXX 2000–2999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F FLAGSTAFF 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
2019-06-11 928-666-9XXX 9000–9999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F FLAGSTAFF AZ
2019-04-10 928-882-3XXX 3000–3999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F WINSLOW AZ
2018-10-11 928-691-7XXX 7000–7999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PAGE AZ
2018-10-02 928-316-8XXX 8000–8999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PIMA AZ
2018-08-24 928-888-1XXX 1000–1999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F GRANDCNYON AZ
2018-02-20 928-963-9XXX 9000–9999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SEDONA AZ
2017-06-12 928-291-1XXX 1000–1999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F YUMA AZ
2017-06-12 928-326-2XXX 2000–2999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F FLAGSTAFF AZ
2017-06-01 928-256-0XXX 0000–0999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F YUMA AZ
2017-06-01 928-326-8XXX 8000–8999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F FLAGSTAFF AZ
2015-10-05 928-558-0XXX 0000–0999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F GREER AZ
2014-10-20 928-298-9XXX 9000–9999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PIMA AZ
2014-10-20 928-792-0XXX 0000–0999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SAFFORD AZ

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.