NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 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 206
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 4
ACCELERATE NETWORKS LLC 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
2021-03-29 206-970-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-03-29 206-970-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-03-29 206-970-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-03-29 206-970-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-03-29 206-970-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-03-10 206-670-1XXX 1000–1999Assigned STRATUS NETWORKS 495J SEATTLE WA
2021-03-02 206-638-1XXX 1000–1999Assigned IP HORIZON LLC 515J SEATTLE WA
2021-03-01 206-970-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SEATTLE WA
2021-02-04 206-537-4XXX 4000–4999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F BAINBDG IS WA
2021-02-03 206-752-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-02-03 206-752-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-02-03 206-752-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-02-03 206-752-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-02-03 206-752-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-02-03 206-752-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-02-03 206-752-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-02-03 206-752-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-02-03 206-752-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-01-30 206-666-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-01-27 206-537-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H BAINBDG IS WA
2021-01-27 206-589-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H RICHMNDBCH WA
2021-01-27 206-603-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H VASHON WA
2021-01-27 206-970-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-01-27 206-970-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2021-01-20 206-593-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2021-01-19 206-656-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-01-19 206-656-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-01-19 206-656-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-01-19 206-656-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-01-19 206-656-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-01-19 206-656-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-01-19 206-656-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-01-19 206-656-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-01-19 206-656-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-01-19 206-656-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-01-14 206-558-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E BAINBDG IS WA
2021-01-14 206-558-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E BAINBDG IS WA
2021-01-14 206-558-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E BAINBDG IS WA
2021-01-14 206-589-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E RICHMNDBCH WA
2021-01-14 206-589-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E RICHMNDBCH WA
2021-01-14 206-589-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E RICHMNDBCH WA
2020-12-30 206-649-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2020-12-30 206-649-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2020-12-30 206-649-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2020-12-30 206-649-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2020-12-30 206-649-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2020-12-30 206-649-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2020-12-30 206-649-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2020-12-30 206-649-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2020-12-30 206-649-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E SEATTLE WA

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.