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
2004-07-01 971-275-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-07-01 971-275-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-07-01 971-275-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-06-23 971-248-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 VERNONIA OR
2004-06-10 971-218-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2004-05-19 971-275-1XXX 1000–1999Assigned ONVOY, LLC - OR 750E PORTLAND OR
2004-04-29 971-275-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-04-29 971-275-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-04-28 971-223-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON OR
2004-04-28 971-223-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON OR
2004-04-27 971-234-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND OR
2004-03-15 971-237-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MCMINNVL OR
2004-02-23 971-221-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-02-23 971-221-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-02-23 971-221-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-02-23 971-221-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-02-23 971-221-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-02-23 971-221-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-02-23 971-221-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-02-23 971-221-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-01-12 971-241-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 MCMINNVL OR
2003-12-11 971-230-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-12-11 971-230-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-12-11 971-242-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-12-11 971-244-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-12-11 971-244-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-12-03 971-645-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2003-12-03 971-645-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2003-12-03 971-645-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2003-12-03 971-645-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2003-12-03 971-645-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2003-12-03 971-645-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2003-12-03 971-645-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2003-12-03 971-645-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2003-11-04 971-237-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MCMINNVL OR
2003-10-24 971-645-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-10-24 971-998-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-10-24 971-998-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-10-24 971-998-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-10-24 971-998-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-10-24 971-998-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-10-24 971-998-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-10-24 971-998-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-10-06 971-409-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-10-06 971-409-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2003-09-29 971-409-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2003-09-29 971-409-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2003-09-29 971-409-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2003-09-29 971-409-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2003-09-29 971-409-5XXX 5000–5999Assigned 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.