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
2013-10-14 503-765-1XXX 1000–1999Assigned PEERLESS NETWORK OF OREGON, LLC - OR 157F CLACKAMAS OR
2013-09-19 503-741-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ASTORIA OR
2013-09-10 503-509-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 STAYTON OR
2013-08-28 503-444-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2013-08-28 503-444-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2013-08-26 503-444-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PORTLAND OR
2013-08-22 503-444-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J PORTLAND OR
2013-08-19 503-444-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2013-08-19 503-444-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2013-08-19 503-741-4XXX 4000–4999Assigned ONVOY, LLC - OR 750E ASTORIA OR
2013-08-19 503-755-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E JEWELL OR
2013-08-08 503-741-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 ASTORIA OR
2013-07-23 503-354-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 TILLAMOOK OR
2013-07-22 503-303-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CLACKAMAS OR
2013-07-10 503-856-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2013-06-28 503-912-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F GRESHAM OR
2013-06-28 503-912-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F GRESHAM OR
2013-06-25 503-457-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 TILLAMOOK OR
2013-06-17 503-718-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 BEAVERTON OR
2013-05-15 503-864-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DAYTON OR
2013-05-07 503-912-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J GRESHAM OR
2013-04-11 503-773-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F NORTH PL OR
2013-04-11 503-773-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F NORTH PL OR
2013-04-11 503-773-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F NORTH PL OR
2013-04-08 503-568-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2013-04-03 503-468-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F ASTORIA OR
2013-04-03 503-610-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SHERWOOD OR
2013-04-03 503-610-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SHERWOOD OR
2013-04-01 503-714-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F DAYTON OR
2013-04-01 503-741-2XXX 2000–2999Assigned ONVOY, LLC - OR 750E ASTORIA OR
2013-02-13 503-765-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F CLACKAMAS OR
2013-02-13 503-765-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F CLACKAMAS OR
2013-02-13 503-765-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F CLACKAMAS OR
2013-02-13 503-765-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F CLACKAMAS OR
2013-02-13 503-765-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F CLACKAMAS OR
2013-01-04 503-628-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2013-01-04 503-924-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2012-12-14 503-305-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CLACKAMAS OR
2012-12-13 503-470-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OR 7531 SEASIDE OR
2012-12-13 503-917-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OR 7531 DALLAS OR
2012-12-05 503-773-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E NORTH PL OR
2012-12-05 503-773-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E NORTH PL OR
2012-12-05 503-994-2XXX 2000–2999Assigned ONVOY, LLC - OR 750E WARRENTON OR
2012-12-04 503-470-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SEASIDE OR
2012-12-04 503-506-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F STFRD-SNDY OR
2012-12-04 503-558-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F STFRD-SNDY OR
2012-12-04 503-743-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F AUMSVLTRNR OR
2012-12-04 503-837-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F DALLAS OR
2012-11-28 503-862-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SHERWOOD OR
2012-11-21 503-868-4XXX 4000–4999Assigned ONVOY, LLC - OR 750E GRAND IS 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.