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
2005-07-07 206-393-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-07-07 206-694-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-07-07 206-701-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-07-07 206-802-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-07-07 206-802-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-06-29 206-554-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-06-29 206-599-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-06-29 206-607-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-06-29 206-708-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-06-29 206-708-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-06-29 206-708-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2005-06-21 206-533-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 RICHMNDBCH WA
2005-06-21 206-629-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 RICHMNDBCH WA
2005-06-21 206-801-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 RICHMNDBCH WA
2005-06-09 206-855-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BAINBDG IS WA
2005-06-07 206-859-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
2005-06-07 206-859-6XXX 6000–6999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
2005-05-31 206-753-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-05-31 206-753-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-05-31 206-753-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-05-31 206-792-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-05-02 206-859-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-05-02 206-859-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-04-13 206-428-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-709-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-709-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-788-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-788-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-829-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-829-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-829-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-876-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-876-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-876-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-926-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-926-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-926-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-962-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-962-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-962-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-962-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-962-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-13 206-962-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-04-06 206-393-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-04-06 206-393-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2005-03-30 206-965-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-03-30 206-965-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-03-30 206-973-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-03-30 206-973-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2005-03-30 206-973-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 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.