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
2011-06-09 206-681-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2011-06-09 206-681-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2011-06-09 206-681-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2011-06-09 206-681-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-06-09 206-681-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-06-09 206-681-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-06-09 206-681-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-06-09 206-687-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2011-06-09 206-687-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2011-06-08 206-457-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2011-06-08 206-457-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2011-06-08 206-457-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2011-06-07 206-765-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-06-07 206-765-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-06-03 206-496-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J SEATTLE WA
2011-05-27 206-317-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BAINBDG IS WA
2011-05-26 206-496-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-05-26 206-496-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-05-26 206-496-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-05-26 206-496-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-05-26 206-496-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-05-26 206-496-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-05-23 206-922-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J SEATTLE WA
2011-05-20 206-457-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SEATTLE WA
2011-05-20 206-457-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SEATTLE WA
2011-05-16 206-330-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2011-05-16 206-743-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2011-05-16 206-866-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BAINBDG IS WA
2011-05-10 206-743-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2011-05-09 206-495-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-05-09 206-495-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-05-09 206-495-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-05-09 206-495-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-05-09 206-495-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-05-09 206-495-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-05-09 206-673-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-05-09 206-673-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-05-09 206-673-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-05-05 206-743-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-05-05 206-743-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-05-05 206-743-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-05-05 206-743-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-05-05 206-743-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-05-05 206-743-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2011-04-12 206-259-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E VASHON WA
2011-04-04 206-673-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2011-04-04 206-673-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2011-03-29 206-204-8XXX 8000–8999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
2011-03-29 206-456-9XXX 9000–9999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
2011-03-09 206-466-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E 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.