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
2016-03-22 206-460-9XXX 9000–9999Assigned METROPCS, INC. 5562 DES MOINES WA
2016-03-22 206-823-3XXX 3000–3999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F BAINBDG IS WA
2016-03-21 206-472-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2016-03-21 206-472-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2016-03-15 206-472-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2016-03-15 206-472-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2016-03-14 206-472-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2016-03-14 206-472-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2016-03-14 206-472-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2016-03-14 206-472-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2016-03-14 206-472-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2016-03-10 206-460-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E DES MOINES WA
2016-03-10 206-472-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2016-03-10 206-485-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SEATTLE WA
2016-03-10 206-485-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SEATTLE WA
2016-03-10 206-485-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SEATTLE WA
2016-03-10 206-485-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SEATTLE WA
2016-03-10 206-485-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SEATTLE WA
2016-03-10 206-929-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F DES MOINES WA
2016-03-10 206-929-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F DES MOINES WA
2016-03-10 206-929-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F DES MOINES WA
2016-03-10 206-929-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F DES MOINES WA
2016-03-08 206-401-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 RICHMNDBCH WA
2016-03-07 206-771-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2016-03-07 206-771-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2016-03-07 206-771-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2016-03-07 206-771-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2016-03-07 206-771-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2016-03-02 206-823-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2016-03-02 206-823-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2016-03-02 206-823-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2016-03-02 206-823-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2016-03-02 206-823-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2016-03-01 206-899-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BAINBDG IS WA
2016-02-29 206-413-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2016-02-29 206-413-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2016-02-24 206-413-0XXX 0000–0999Assigned METROPCS, INC. 5562 SEATTLE WA
2016-02-24 206-413-1XXX 1000–1999Assigned METROPCS, INC. 5562 SEATTLE WA
2016-02-19 206-471-7XXX 7000–7999Assigned NUSO, LLC 551G SEATTLE WA
2016-02-17 206-899-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E BAINBDG IS WA
2016-02-05 206-482-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2016-02-05 206-482-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2016-02-05 206-482-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2016-02-05 206-482-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2016-02-05 206-482-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2016-02-05 206-482-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2016-02-03 206-800-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E RICHMNDBCH WA
2016-02-01 206-899-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E BAINBDG IS WA
2016-02-01 206-899-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2016-02-01 206-899-7XXX 7000–7999Assigned 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.