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
2007-02-13 503-995-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2007-02-13 503-995-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2007-02-13 503-995-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2007-02-09 503-396-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ST HELENS OR
2007-01-18 503-747-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J BEAVERTON OR
2007-01-18 503-747-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J BEAVERTON OR
2007-01-18 503-747-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J BEAVERTON OR
2007-01-18 503-812-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 TILLAMOOK OR
2007-01-16 503-855-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J STFRD-SNDY OR
2007-01-11 503-477-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PORTLAND OR
2007-01-11 503-477-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PORTLAND OR
2007-01-11 503-477-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PORTLAND OR
2007-01-11 503-477-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PORTLAND OR
2007-01-11 503-477-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PORTLAND OR
2007-01-11 503-477-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J PORTLAND OR
2007-01-11 503-863-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2007-01-08 503-856-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2007-01-08 503-856-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2006-12-29 503-729-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-12-29 503-729-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-12-29 503-863-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-12-20 503-477-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-12-20 503-477-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-12-20 503-477-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-12-20 503-863-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2006-12-19 503-863-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 PORTLAND OR
2006-12-14 503-420-2XXX 2000–2999Assigned METROPCS, INC. 5562 DALLAS OR
2006-12-11 503-883-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 MCMINNVL OR
2006-12-06 503-200-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-12-06 503-856-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2006-12-06 503-863-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2006-12-04 503-906-8XXX 8000–8999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 BEAVERTON OR
2006-12-01 503-438-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ST HELENS OR
2006-12-01 503-840-5XXX 5000–5999Assigned METROPCS, INC. 5562 BEAVERTON OR
2006-12-01 503-840-9XXX 9000–9999Assigned METROPCS, INC. 5562 BEAVERTON OR
2006-11-28 503-476-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 NEWBERG OR
2006-11-17 503-895-0XXX 0000–0999Assigned ONVOY, LLC - OR 750E HOOD LAND OR
2006-11-03 503-470-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SEASIDE OR
2006-11-01 503-217-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 SHERWOOD OR
2006-11-01 503-798-4XXX 4000–4999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 SALEM OR
2006-10-27 503-729-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-10-27 503-729-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-10-27 503-729-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-10-27 503-729-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2006-10-26 503-385-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2006-10-23 503-716-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON OR
2006-10-23 503-716-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON OR
2006-10-23 503-716-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON OR
2006-10-23 503-853-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PORTLAND OR
2006-10-23 503-853-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 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.