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
2012-12-12 206-858-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-12-12 206-858-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-12-11 206-735-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2012-11-21 206-596-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2012-11-21 206-596-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2012-11-21 206-596-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2012-11-08 206-735-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2012-11-08 206-735-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2012-11-02 206-858-7XXX 7000–7999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
2012-10-24 206-557-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2012-10-19 206-557-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2012-10-12 206-596-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2012-10-12 206-596-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2012-10-12 206-735-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-10-12 206-735-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-10-12 206-735-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-10-09 206-549-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-10-09 206-549-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-10-09 206-549-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-10-09 206-549-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-10-09 206-549-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-10-09 206-549-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-10-09 206-549-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-10-09 206-549-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-10-09 206-557-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2012-10-09 206-557-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2012-10-04 206-549-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2012-10-03 206-651-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2012-09-28 206-765-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2012-09-28 206-765-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2012-09-28 206-934-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2012-09-11 206-673-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA
2012-09-11 206-673-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA
2012-09-07 206-454-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-09-07 206-512-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-09-07 206-639-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-09-07 206-641-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-09-07 206-643-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-09-07 206-643-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-09-07 206-643-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-09-07 206-643-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-09-07 206-643-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-09-07 206-643-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-08-27 206-578-3XXX 3000–3999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F DES MOINES WA
2012-08-27 206-578-4XXX 4000–4999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F DES MOINES WA
2012-08-27 206-578-5XXX 5000–5999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F DES MOINES WA
2012-08-21 206-209-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2012-08-21 206-209-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2012-08-21 206-209-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2012-08-21 206-454-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 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.