NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

5 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, 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
2021-09-24 206-710-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2021-09-24 206-710-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2021-09-24 206-710-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2021-09-24 206-710-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2021-09-13 206-671-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H SEATTLE WA
2021-09-13 206-671-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H SEATTLE WA
2021-09-13 206-671-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H SEATTLE WA
2021-09-13 206-671-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H SEATTLE WA
2021-09-13 206-671-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H SEATTLE WA
2021-09-13 206-671-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H SEATTLE WA
2021-09-13 206-671-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H SEATTLE WA
2021-09-07 206-671-0XXX 0000–0999Assigned METROPCS, INC. 5562 SEATTLE WA
2021-09-07 206-671-9XXX 9000–9999Assigned METROPCS, INC. 5562 SEATTLE WA
2021-09-07 206-710-3XXX 3000–3999Assigned METROPCS, INC. 5562 SEATTLE WA
2021-08-31 206-944-1XXX 1000–1999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F DES MOINES WA
2021-08-30 206-710-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F SEATTLE WA
2021-08-30 206-758-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F BAINBDG IS WA
2021-08-25 206-944-0XXX 0000–0999Assigned TELNYX LLC 073H DES MOINES WA
2021-08-19 206-532-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2021-08-19 206-532-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2021-08-19 206-532-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2021-08-19 206-593-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2021-08-19 206-593-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2021-08-19 206-593-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2021-08-19 206-657-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-08-19 206-677-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-08-19 206-710-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-08-19 206-710-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-08-19 206-758-6XXX 6000–6999Assigned FRACTEL, LLC 965H BAINBDG IS WA
2021-08-19 206-944-4XXX 4000–4999Assigned FRACTEL, LLC 965H DES MOINES WA
2021-08-10 206-848-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-08-10 206-848-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-08-10 206-848-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-08-10 206-848-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-08-10 206-848-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-08-10 206-848-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-08-10 206-848-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-08-10 206-848-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-08-10 206-848-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-08-10 206-848-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2021-07-20 206-677-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SEATTLE WA
2021-06-22 206-532-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2021-06-22 206-532-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2021-06-18 206-537-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2021-06-18 206-537-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2021-06-17 206-532-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2021-06-17 206-532-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2021-06-16 206-670-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2021-06-16 206-670-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2021-06-16 206-670-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA

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.