NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

14 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 971
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 8
ONVOY, LLC - OR 2
T-MOBILE USA, INC. 1
NEW CINGULAR WIRELESS PCS, LLC 1
EXIANT COMMUNICATIONS 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
2005-02-17 971-322-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2005-02-17 971-322-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2005-02-17 971-322-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2005-02-07 971-285-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2005-02-07 971-285-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2005-02-01 971-218-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2005-01-24 971-239-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SALEM OR
2005-01-19 971-228-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E BEAVERTON OR
2005-01-19 971-228-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E BEAVERTON OR
2005-01-05 971-218-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2005-01-04 971-239-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SALEM OR
2004-12-02 971-241-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MCMINNVL OR
2004-11-17 971-327-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON OR
2004-11-17 971-327-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON OR
2004-11-17 971-327-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON OR
2004-11-16 971-223-9XXX 9000–9999Assigned METROPCS, INC. 5562 BEAVERTON OR
2004-10-26 971-227-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-10-26 971-227-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-10-26 971-227-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-10-26 971-227-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-10-26 971-227-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-10-26 971-227-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-10-26 971-563-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-10-26 971-563-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-10-21 971-227-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-10-21 971-227-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-10-21 971-227-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-10-21 971-227-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-10-20 971-237-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MCMINNVL OR
2004-10-18 971-259-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 AMITY OR
2004-10-14 971-218-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2004-10-05 971-244-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2004-09-22 971-228-3XXX 3000–3999Assigned ONVOY, LLC - OR 750E BEAVERTON OR
2004-09-22 971-228-4XXX 4000–4999Assigned ONVOY, LLC - OR 750E BEAVERTON OR
2004-08-26 971-223-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON OR
2004-08-26 971-223-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON OR
2004-08-26 971-223-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON OR
2004-08-18 971-237-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MCMINNVL OR
2004-08-03 971-222-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-08-03 971-222-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-08-03 971-222-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-07-19 971-218-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2004-07-19 971-218-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2004-07-16 971-222-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-07-16 971-222-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-07-16 971-222-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-07-13 971-222-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND OR
2004-07-06 971-275-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-07-01 971-275-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-07-01 971-275-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR

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.