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
2025-10-23 206-863-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
2025-10-23 206-863-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
2025-10-23 206-863-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
2025-10-23 206-863-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
2025-10-23 206-863-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
2025-10-23 206-863-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SEATTLE WA
2025-10-17 206-857-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VASHON WA
2025-10-07 206-438-7XXX 7000–7999Assigned TERRA NOVA TELECOM INC. 145J SEATTLE WA
2025-08-19 206-862-3XXX 3000–3999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F SEATTLE WA
2025-07-18 206-840-3XXX 3000–3999Assigned WAVENATION, LLC 700J SEATTLE WA
2025-05-30 206-862-0XXX 0000–0999Assigned LEAP TELECOM, LLC 616J SEATTLE WA
2025-05-30 206-862-1XXX 1000–1999Assigned LEAP TELECOM, LLC 616J SEATTLE WA
2025-05-30 206-862-2XXX 2000–2999Assigned LEAP TELECOM, LLC 616J SEATTLE WA
2025-05-09 206-847-4XXX 4000–4999Assigned BOOST SUBSCRIBERCO L.L.C. 490J SEATTLE WA
2025-05-09 206-847-7XXX 7000–7999Assigned BOOST SUBSCRIBERCO L.L.C. 490J SEATTLE WA
2025-04-17 206-847-1XXX 1000–1999Assigned NUSO, LLC 732J SEATTLE WA
2025-04-17 206-847-2XXX 2000–2999Assigned NUSO, LLC 732J SEATTLE WA
2025-04-17 206-847-3XXX 3000–3999Assigned NUSO, LLC 732J SEATTLE WA
2025-03-31 206-847-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SEATTLE WA
2025-02-25 206-881-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F SEATTLE WA
2025-02-14 206-881-1XXX 1000–1999Assigned WIDE VOICE, LLC - WA 707G SEATTLE WA
2025-02-10 206-846-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2025-02-10 206-846-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2025-02-10 206-846-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2025-02-10 206-846-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2025-02-10 206-846-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2025-02-10 206-846-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2025-02-10 206-846-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2025-02-10 206-846-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2025-02-10 206-846-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2025-02-10 206-846-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2025-01-09 206-807-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2025-01-09 206-807-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2025-01-09 206-807-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2025-01-09 206-807-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2024-12-30 206-845-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2024-12-30 206-845-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2024-12-30 206-845-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2024-12-30 206-845-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2024-12-30 206-845-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2024-12-30 206-845-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2024-12-30 206-845-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2024-12-30 206-845-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2024-12-30 206-845-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2024-12-30 206-845-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2024-12-12 206-603-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 VASHON WA
2024-12-09 206-403-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2024-12-09 206-840-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2024-12-09 206-840-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2024-12-09 206-843-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 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.