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
2018-06-26 206-636-0XXX 0000–0999Assigned ADVANCED TELECOM SOLUTIONS, LLC 181J SEATTLE WA
2018-06-11 206-531-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SEATTLE WA
2018-06-11 206-531-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SEATTLE WA
2018-06-11 206-531-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SEATTLE WA
2018-05-09 206-531-6XXX 6000–6999Assigned METROPCS, INC. 5562 SEATTLE WA
2018-05-09 206-531-8XXX 8000–8999Assigned METROPCS, INC. 5562 SEATTLE WA
2018-05-09 206-531-9XXX 9000–9999Assigned METROPCS, INC. 5562 SEATTLE WA
2018-05-03 206-531-7XXX 7000–7999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F SEATTLE WA
2018-04-24 206-531-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2018-03-21 206-880-4XXX 4000–4999Assigned METROPCS, INC. 5562 SEATTLE WA
2018-03-21 206-880-5XXX 5000–5999Assigned METROPCS, INC. 5562 SEATTLE WA
2018-03-21 206-880-6XXX 6000–6999Assigned METROPCS, INC. 5562 SEATTLE WA
2018-03-19 206-401-6XXX 6000–6999Assigned ASTOUND BROADBAND, LLC - WA 937F RICHMNDBCH WA
2018-03-16 206-742-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2018-03-16 206-742-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2018-03-06 206-880-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SEATTLE WA
2018-03-06 206-880-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SEATTLE WA
2018-03-06 206-880-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SEATTLE WA
2018-02-02 206-742-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2018-01-19 206-597-6XXX 6000–6999Assigned QWEST CORPORATION 9638 SEATTLE WA
2018-01-04 206-887-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2018-01-04 206-887-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2017-12-13 206-880-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2017-12-04 206-702-9XXX 9000–9999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
2017-12-04 206-880-7XXX 7000–7999Assigned TELNYX LLC 073H SEATTLE WA
2017-11-09 206-751-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2017-11-08 206-880-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2017-11-08 206-880-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2017-11-07 206-702-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2017-11-07 206-702-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2017-11-07 206-702-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2017-11-07 206-945-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2017-10-25 206-945-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2017-10-25 206-945-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2017-10-25 206-945-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2017-10-24 206-702-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2017-10-19 206-945-0XXX 0000–0999Assigned METROPCS, INC. 5562 SEATTLE WA
2017-10-19 206-945-1XXX 1000–1999Assigned METROPCS, INC. 5562 SEATTLE WA
2017-10-19 206-945-9XXX 9000–9999Assigned METROPCS, INC. 5562 SEATTLE WA
2017-10-17 206-231-1XXX 1000–1999Assigned METROPCS, INC. 5562 DES MOINES WA
2017-10-10 206-247-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2017-10-10 206-247-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2017-10-09 206-247-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2017-10-09 206-247-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2017-10-09 206-247-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2017-10-09 206-247-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2017-10-09 206-247-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2017-10-09 206-247-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2017-10-09 206-247-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2017-10-09 206-536-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 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.