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
2015-11-09 206-960-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2015-11-09 206-960-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2015-11-09 206-960-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2015-11-09 206-960-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2015-11-09 206-960-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2015-11-09 206-960-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2015-11-06 206-899-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2015-11-06 206-899-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2015-10-29 206-492-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SEATTLE WA
2015-10-13 206-539-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2015-10-13 206-539-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2015-10-13 206-539-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2015-10-13 206-539-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2015-10-09 206-475-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2015-10-09 206-475-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2015-10-09 206-475-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2015-10-09 206-475-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2015-10-09 206-475-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2015-10-09 206-492-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2015-10-09 206-492-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2015-10-09 206-492-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2015-10-09 206-966-3XXX 3000–3999Assigned METROPCS, INC. 5562 DES MOINES WA
2015-09-30 206-539-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA
2015-09-30 206-539-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA
2015-09-30 206-539-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA
2015-09-29 206-492-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E SEATTLE WA
2015-09-28 206-492-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SEATTLE WA
2015-09-28 206-960-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2015-09-24 206-475-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2015-09-24 206-475-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2015-09-24 206-475-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2015-09-24 206-475-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2015-09-24 206-475-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2015-09-17 206-800-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 RICHMNDBCH WA
2015-09-17 206-966-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E DES MOINES WA
2015-09-16 206-637-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2015-09-16 206-637-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2015-09-16 206-637-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2015-09-10 206-966-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DES MOINES WA
2015-09-03 206-637-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2015-09-03 206-637-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2015-08-28 206-637-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2015-08-28 206-637-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2015-08-28 206-637-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2015-08-28 206-637-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2015-08-28 206-637-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2015-08-24 206-488-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BAINBDG IS WA
2015-08-21 206-822-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2015-08-21 206-822-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2015-08-21 206-822-2XXX 2000–2999Assigned 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.