NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

7 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 503
ONVOY, LLC - OR 4
NEW CINGULAR WIRELESS PCS, LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 1
BANDWIDTH.COM CLEC, LLC - OR 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
2006-10-19 503-308-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E CLATSKANIE OR
2006-10-17 503-200-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-10-17 503-798-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2006-10-17 503-798-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2006-10-17 503-798-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2006-10-17 503-863-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-10-11 503-912-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J GRESHAM OR
2006-10-09 503-536-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2006-10-09 503-536-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2006-10-09 503-686-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2006-10-09 503-686-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2006-10-09 503-686-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2006-10-06 503-333-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-10-06 503-928-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2006-10-06 503-928-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2006-10-06 503-928-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2006-10-06 503-928-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2006-10-06 503-928-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2006-10-06 503-928-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2006-10-06 503-928-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-10-05 503-594-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E CLACKAMAS OR
2006-10-05 503-734-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2006-09-28 503-270-6XXX 6000–6999Assigned METROPCS, INC. 5562 BEAVERTON OR
2006-09-28 503-270-7XXX 7000–7999Assigned METROPCS, INC. 5562 BEAVERTON OR
2006-09-26 503-437-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MCMINNVL OR
2006-09-26 503-857-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MCMINNVL OR
2006-09-26 503-899-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NEWBERG OR
2006-09-25 503-333-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-25 503-333-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-25 503-333-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-25 503-333-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-25 503-333-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-25 503-333-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-25 503-333-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-25 503-333-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-25 503-333-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-25 503-994-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E WARRENTON OR
2006-09-19 503-839-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-19 503-839-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-19 503-839-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-19 503-839-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-19 503-839-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-19 503-839-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-19 503-839-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-19 503-839-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-19 503-839-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-19 503-933-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-19 503-933-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-19 503-933-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-19 503-933-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 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.