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
2006-09-19 503-933-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-19 503-933-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-19 503-933-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-19 503-933-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-19 503-933-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-09-18 503-438-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E ST HELENS OR
2006-09-18 503-710-9XXX 9000–9999Assigned ONVOY, LLC - OR 750E WOODBURN OR
2006-09-13 503-298-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 ASTORIA OR
2006-09-13 503-447-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E NORTH PL OR
2006-09-13 503-470-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E SEASIDE OR
2006-09-13 503-689-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2006-09-13 503-689-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2006-09-13 503-689-8XXX 8000–8999Assigned ONVOY, LLC - OR 750E SALEM OR
2006-09-13 503-713-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F BEAVERTON OR
2006-09-13 503-741-8XXX 8000–8999Assigned ONVOY, LLC - OR 750E ASTORIA OR
2006-09-13 503-837-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E DALLAS OR
2006-09-01 503-387-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J CLACKAMAS OR
2006-09-01 503-387-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CLACKAMAS OR
2006-09-01 503-512-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J GRESHAM OR
2006-09-01 503-512-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J GRESHAM OR
2006-08-31 503-480-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2006-08-30 503-369-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ST HELENS OR
2006-08-30 503-576-0XXX 0000–0999Assigned METROPCS, INC. 5562 SALEM OR
2006-08-30 503-857-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MCMINNVL OR
2006-08-30 503-857-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MCMINNVL OR
2006-08-25 503-206-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2006-08-25 503-867-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2006-08-18 503-867-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-08-18 503-867-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-08-18 503-867-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-08-18 503-867-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-08-18 503-867-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-08-18 503-867-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-08-18 503-867-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-08-18 503-867-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-08-17 503-277-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2006-08-17 503-277-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2006-08-17 503-277-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2006-08-17 503-530-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2006-08-14 503-828-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVERTON OR
2006-08-10 503-610-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SHERWOOD OR
2006-08-10 503-746-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J BEAVERTON OR
2006-08-10 503-746-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BEAVERTON OR
2006-08-10 503-746-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J BEAVERTON OR
2006-08-10 503-746-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J BEAVERTON OR
2006-08-09 503-798-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2006-08-09 503-798-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2006-08-08 503-724-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-08-08 503-724-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-08-08 503-724-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 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.