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
2012-01-25 206-486-7XXX 7000–7999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F SEATTLE WA
2012-01-25 206-486-8XXX 8000–8999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F SEATTLE WA
2012-01-25 206-486-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F SEATTLE WA
2012-01-19 206-641-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2012-01-04 206-866-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BAINBDG IS WA
2012-01-03 206-451-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E BAINBDG IS WA
2011-12-21 206-745-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 RICHMNDBCH WA
2011-12-20 206-641-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2011-12-20 206-641-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2011-12-16 206-639-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2011-12-06 206-641-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-12-06 206-641-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-12-06 206-641-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-12-02 206-538-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2011-12-02 206-538-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2011-12-02 206-538-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2011-12-02 206-641-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2011-11-23 206-538-0XXX 0000–0999Assigned ASTOUND BROADBAND, LLC - WA 937F SEATTLE WA
2011-11-14 206-578-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2011-11-11 206-592-3XXX 3000–3999Assigned QWEST CORPORATION 9638 DES MOINES WA
2011-11-11 206-592-4XXX 4000–4999Assigned QWEST CORPORATION 9638 DES MOINES WA
2011-11-09 206-538-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2011-11-09 206-641-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA
2011-11-09 206-641-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA
2011-10-27 206-538-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2011-10-17 206-538-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2011-10-17 206-538-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2011-10-17 206-538-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2011-10-17 206-747-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-10-17 206-747-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-10-17 206-747-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-10-17 206-747-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-10-17 206-747-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-10-17 206-747-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-10-17 206-747-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-10-17 206-747-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-10-17 206-747-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-10-17 206-747-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-10-04 206-538-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J SEATTLE WA
2011-09-30 206-740-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2011-09-30 206-740-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2011-09-30 206-740-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2011-09-30 206-740-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2011-09-30 206-740-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2011-09-30 206-740-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2011-09-30 206-740-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2011-09-30 206-740-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2011-09-30 206-740-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2011-09-30 206-740-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2011-09-19 206-535-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J 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.