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
2014-01-15 503-558-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F STFRD-SNDY OR
2013-12-20 503-749-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F AUMSVLTRNR OR
2013-12-12 503-664-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVER OR
2013-12-12 503-831-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DALLAS OR
2013-12-05 503-207-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E BEAVERTON OR
2013-12-05 503-272-9XXX 9000–9999Assigned ONVOY, LLC - OR 750E GOVENTCAMP OR
2013-12-05 503-386-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E KNAPPA OR
2013-12-05 503-386-9XXX 9000–9999Assigned ONVOY, LLC - OR 750E KNAPPA OR
2013-12-05 503-694-3XXX 3000–3999Assigned ONVOY, LLC - OR 750E CHARBONNEU OR
2013-12-05 503-694-4XXX 4000–4999Assigned ONVOY, LLC - OR 750E CHARBONNEU OR
2013-12-05 503-744-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E CLACKAMAS OR
2013-12-05 503-744-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E CLACKAMAS OR
2013-12-05 503-749-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E AUMSVLTRNR OR
2013-12-05 503-749-9XXX 9000–9999Assigned ONVOY, LLC - OR 750E AUMSVLTRNR OR
2013-12-05 503-751-3XXX 3000–3999Assigned ONVOY, LLC - OR 750E DALLAS OR
2013-12-05 503-751-8XXX 8000–8999Assigned ONVOY, LLC - OR 750E DALLAS OR
2013-12-05 503-776-3XXX 3000–3999Assigned ONVOY, LLC - OR 750E AURORA OR
2013-12-05 503-854-1XXX 1000–1999Assigned ONVOY, LLC - OR 750E DETROIT OR
2013-12-05 503-854-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E DETROIT OR
2013-12-05 503-868-0XXX 0000–0999Assigned ONVOY, LLC - OR 750E GRAND IS OR
2013-12-05 503-868-3XXX 3000–3999Assigned ONVOY, LLC - OR 750E GRAND IS OR
2013-12-05 503-987-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E SCAPPOOSE OR
2013-12-05 503-987-9XXX 9000–9999Assigned ONVOY, LLC - OR 750E SCAPPOOSE OR
2013-11-25 503-437-7XXX 7000–7999Assigned METROPCS, INC. 5562 MCMINNVL OR
2013-11-20 503-558-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J STFRD-SNDY OR
2013-11-19 503-594-8XXX 8000–8999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 CLACKAMAS OR
2013-11-15 503-994-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F WARRENTON OR
2013-11-14 503-374-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TILLAMOOK OR
2013-11-14 503-483-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PACIFIC CY OR
2013-11-04 503-837-8XXX 8000–8999Assigned PEERLESS NETWORK OF OREGON, LLC - OR 157F DALLAS OR
2013-11-04 503-908-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CLACKAMAS OR
2013-11-04 503-994-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WARRENTON OR
2013-10-30 503-300-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BAY CITY OR
2013-10-30 503-664-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BEAVER OR
2013-10-30 503-852-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CARLTON OR
2013-10-30 503-879-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRANDRONDE OR
2013-10-29 503-563-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J STFRD-SNDY OR
2013-10-28 503-987-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SCAPPOOSE OR
2013-10-25 503-272-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GOVENTCAMP OR
2013-10-25 503-386-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KNAPPA OR
2013-10-25 503-755-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J JEWELL OR
2013-10-25 503-770-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CHARBONNEU OR
2013-10-25 503-776-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AURORA OR
2013-10-22 503-465-7XXX 7000–7999Assigned METROPCS, INC. 5562 GRESHAM OR
2013-10-22 503-496-9XXX 9000–9999Assigned METROPCS, INC. 5562 CLACKAMAS OR
2013-10-22 503-574-0XXX 0000–0999Assigned METROPCS, INC. 5562 BEAVERTON OR
2013-10-22 503-885-4XXX 4000–4999Assigned METROPCS, INC. 5562 STFRD-SNDY OR
2013-10-15 503-354-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K TILLAMOOK OR
2013-10-15 503-837-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DALLAS OR
2013-10-15 503-994-9XXX 9000–9999Assigned PEERLESS NETWORK OF OREGON, LLC - OR 157F WARRENTON 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.