NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

14 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2005-09-20 971-240-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALEM OR
2005-09-01 971-228-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E BEAVERTON OR
2005-08-31 971-732-4XXX 4000–4999Assigned METROPCS, INC. 5562 BEAVERTON OR
2005-08-31 971-732-6XXX 6000–6999Assigned METROPCS, INC. 5562 BEAVERTON OR
2005-08-05 971-241-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 MCMINNVL OR
2005-06-16 971-533-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2005-06-16 971-533-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2005-06-14 971-218-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2005-06-07 971-241-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MCMINNVL OR
2005-05-20 971-533-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2005-05-20 971-533-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2005-05-20 971-533-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2005-05-20 971-533-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2005-05-10 971-321-0XXX 0000–0999Assigned QWEST CORPORATION 9638 PORTLAND OR
2005-05-10 971-321-1XXX 1000–1999Assigned QWEST CORPORATION 9638 PORTLAND OR
2005-05-10 971-321-2XXX 2000–2999Assigned QWEST CORPORATION 9638 PORTLAND OR
2005-05-10 971-321-3XXX 3000–3999Assigned QWEST CORPORATION 9638 PORTLAND OR
2005-05-10 971-321-4XXX 4000–4999Assigned QWEST CORPORATION 9638 PORTLAND OR
2005-05-10 971-321-5XXX 5000–5999Assigned QWEST CORPORATION 9638 PORTLAND OR
2005-05-10 971-321-6XXX 6000–6999Assigned QWEST CORPORATION 9638 PORTLAND OR
2005-05-10 971-321-7XXX 7000–7999Assigned QWEST CORPORATION 9638 PORTLAND OR
2005-05-10 971-321-8XXX 8000–8999Assigned QWEST CORPORATION 9638 PORTLAND OR
2005-05-10 971-321-9XXX 9000–9999Assigned QWEST CORPORATION 9638 PORTLAND OR
2005-04-26 971-218-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2005-03-31 971-732-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON OR
2005-03-31 971-732-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON OR
2005-03-31 971-732-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON OR
2005-03-21 971-232-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 NORTH PL OR
2005-03-21 971-232-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 NORTH PL OR
2005-03-11 971-533-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-03-11 971-533-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-03-11 971-533-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-03-11 971-533-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-03-02 971-322-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2005-02-25 971-285-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND OR
2005-02-25 971-285-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND OR
2005-02-25 971-322-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND OR
2005-02-24 971-732-9XXX 9000–9999Assigned METROPCS, INC. 5562 BEAVERTON OR
2005-02-21 971-285-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2005-02-21 971-285-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2005-02-21 971-285-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2005-02-21 971-285-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2005-02-21 971-285-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2005-02-21 971-285-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2005-02-17 971-252-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 STFRD-SNDY OR
2005-02-17 971-252-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 STFRD-SNDY OR
2005-02-17 971-252-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 STFRD-SNDY OR
2005-02-17 971-322-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2005-02-17 971-322-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2005-02-17 971-322-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.