NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

7 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 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
2004-12-27 503-608-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVERTON OR
2004-12-27 503-616-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVERTON OR
2004-12-27 503-616-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVERTON OR
2004-12-27 503-616-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVERTON OR
2004-12-27 503-616-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVERTON OR
2004-12-27 503-616-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVERTON OR
2004-12-21 503-984-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WOODBURN OR
2004-12-15 503-374-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 TILLAMOOK OR
2004-12-13 503-367-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2004-12-13 503-367-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2004-12-13 503-367-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2004-12-13 503-367-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2004-11-29 503-334-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-11-29 503-334-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-11-29 503-334-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-11-29 503-737-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-11-29 503-737-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-11-29 503-737-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-11-29 503-737-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-11-18 503-465-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 GRESHAM OR
2004-11-16 503-562-0XXX 0000–0999Assigned METROPCS, INC. 5562 SALEM OR
2004-11-16 503-621-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-11-16 503-951-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WOODBURN OR
2004-11-08 503-334-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2004-11-08 503-334-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2004-11-05 503-298-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 ASTORIA OR
2004-11-03 503-334-0XXX 0000–0999Assigned ONVOY, LLC - OR 750E PORTLAND OR
2004-11-03 503-334-1XXX 1000–1999Assigned ONVOY, LLC - OR 750E PORTLAND OR
2004-11-03 503-334-2XXX 2000–2999Assigned ONVOY, LLC - OR 750E PORTLAND OR
2004-11-03 503-334-3XXX 3000–3999Assigned ONVOY, LLC - OR 750E PORTLAND OR
2004-11-03 503-334-4XXX 4000–4999Assigned ONVOY, LLC - OR 750E PORTLAND OR
2004-11-02 503-984-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 WOODBURN OR
2004-11-02 503-989-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WOODBURN OR
2004-10-26 503-258-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-10-26 503-808-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-10-26 503-943-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2004-10-22 503-886-8XXX 8000–8999Assigned ONVOY, LLC - OR 750E PORTLAND OR
2004-10-20 503-508-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2004-10-20 503-621-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2004-10-20 503-737-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2004-10-20 503-952-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2004-10-14 503-438-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ST HELENS OR
2004-10-12 503-428-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2004-10-12 503-547-3XXX 3000–3999Assigned METROPCS, INC. 5562 BEAVERTON OR
2004-10-11 503-413-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-10-11 503-423-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-10-11 503-460-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-10-11 503-735-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-10-11 503-833-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2004-10-11 503-886-9XXX 9000–9999Assigned 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.