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
2007-10-05 503-602-5XXX 5000–5999Assigned METROPCS, INC. 5562 SALEM OR
2007-10-05 503-602-6XXX 6000–6999Assigned METROPCS, INC. 5562 SALEM OR
2007-10-05 503-602-7XXX 7000–7999Assigned METROPCS, INC. 5562 SALEM OR
2007-10-04 503-410-2XXX 2000–2999Assigned METROPCS, INC. 5562 ST HELENS OR
2007-09-21 503-896-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2007-09-21 503-896-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2007-09-19 503-383-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2007-09-18 503-576-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2007-09-14 503-437-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 MCMINNVL OR
2007-09-11 503-302-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2007-09-11 503-302-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2007-09-11 503-729-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2007-09-11 503-729-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2007-09-11 503-729-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2007-09-11 503-729-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2007-09-10 503-405-2XXX 2000–2999Assigned METROPCS, INC. 5562 GRESHAM OR
2007-09-10 503-406-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CLACKAMAS OR
2007-09-04 503-857-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MCMINNVL OR
2007-08-20 503-608-0XXX 0000–0999Assigned METROPCS, INC. 5562 BEAVERTON OR
2007-08-20 503-608-2XXX 2000–2999Assigned METROPCS, INC. 5562 BEAVERTON OR
2007-08-08 503-616-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2007-08-08 503-616-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2007-08-08 503-899-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 NEWBERG OR
2007-08-08 503-908-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J CLACKAMAS OR
2007-08-08 503-953-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2007-08-07 503-437-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 MCMINNVL OR
2007-08-03 503-883-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J MCMINNVL OR
2007-07-31 503-584-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SALEM OR
2007-07-31 503-689-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SALEM OR
2007-07-31 503-716-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J BEAVERTON OR
2007-07-31 503-718-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J BEAVERTON OR
2007-07-31 503-974-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J CLACKAMAS OR
2007-07-27 503-200-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2007-07-27 503-863-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2007-07-20 503-966-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E WESTPORT OR
2007-07-19 503-606-7XXX 7000–7999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 DALLAS OR
2007-07-18 503-200-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2007-07-14 503-436-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E CANNON BCH OR
2007-07-06 503-436-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CANNON BCH OR
2007-07-06 503-468-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ASTORIA OR
2007-07-06 503-717-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K SEASIDE OR
2007-07-06 503-861-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WARRENTON OR
2007-07-05 503-863-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND OR
2007-07-05 503-863-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND OR
2007-07-03 503-200-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND OR
2007-07-03 503-200-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND OR
2007-07-03 503-200-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND OR
2007-07-03 503-339-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SALEM OR
2007-06-29 503-496-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 CLACKAMAS OR
2007-06-28 503-610-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SHERWOOD 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.