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
2018-10-16 206-665-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-10-16 206-665-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-10-16 206-665-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-10-16 206-665-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-10-08 206-513-0XXX 0000–0999Assigned AIRESPRING, INC. 996H SEATTLE WA
2018-09-26 206-308-0XXX 0000–0999Assigned METROPCS, INC. 5562 SEATTLE WA
2018-09-26 206-308-1XXX 1000–1999Assigned METROPCS, INC. 5562 SEATTLE WA
2018-09-26 206-308-9XXX 9000–9999Assigned METROPCS, INC. 5562 SEATTLE WA
2018-09-24 206-502-4XXX 4000–4999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F BAINBDG IS WA
2018-09-21 206-665-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2018-09-21 206-742-1XXX 1000–1999Assigned METROPCS, INC. 5562 DES MOINES WA
2018-09-21 206-742-2XXX 2000–2999Assigned METROPCS, INC. 5562 DES MOINES WA
2018-09-17 206-636-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2018-09-17 206-636-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2018-09-17 206-636-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2018-09-17 206-636-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2018-09-12 206-887-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2018-09-12 206-887-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2018-09-12 206-887-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2018-09-10 206-502-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BAINBDG IS WA
2018-09-05 206-401-8XXX 8000–8999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F RICHMNDBCH WA
2018-08-31 206-507-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-08-31 206-507-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-08-31 206-507-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-08-31 206-507-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-08-31 206-507-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-08-31 206-507-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-08-31 206-507-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-08-31 206-507-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-08-31 206-507-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-08-31 206-507-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-08-23 206-636-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2018-08-23 206-636-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2018-08-23 206-636-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2018-08-23 206-636-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2018-08-22 206-636-1XXX 1000–1999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F SEATTLE WA
2018-08-16 206-231-5XXX 5000–5999Assigned TELNYX LLC 073H DES MOINES WA
2018-07-24 206-531-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-07-24 206-531-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-07-24 206-702-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-07-24 206-702-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-07-24 206-702-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-07-24 206-702-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-07-24 206-702-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-07-24 206-945-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-07-24 206-945-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-07-24 206-945-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2018-07-13 206-231-7XXX 7000–7999Assigned METROPCS, INC. 5562 DES MOINES WA
2018-07-13 206-231-8XXX 8000–8999Assigned METROPCS, INC. 5562 DES MOINES WA
2018-07-13 206-502-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS 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.