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
2012-11-21 503-868-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E GRAND IS OR
2012-11-20 503-217-2XXX 2000–2999Assigned ONVOY, LLC - OR 750E SHERWOOD OR
2012-11-20 503-386-1XXX 1000–1999Assigned ONVOY, LLC - OR 750E KNAPPA OR
2012-11-20 503-386-2XXX 2000–2999Assigned ONVOY, LLC - OR 750E KNAPPA OR
2012-11-20 503-386-3XXX 3000–3999Assigned ONVOY, LLC - OR 750E KNAPPA OR
2012-11-20 503-455-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E WESTPORT OR
2012-11-20 503-455-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E WESTPORT OR
2012-11-20 503-455-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E WESTPORT OR
2012-11-20 503-470-2XXX 2000–2999Assigned ONVOY, LLC - OR 750E SEASIDE OR
2012-11-20 503-470-4XXX 4000–4999Assigned ONVOY, LLC - OR 750E SEASIDE OR
2012-11-20 503-486-8XXX 8000–8999Assigned ONVOY, LLC - OR 750E STFRD-SNDY OR
2012-11-20 503-506-2XXX 2000–2999Assigned ONVOY, LLC - OR 750E STFRD-SNDY OR
2012-11-20 503-506-4XXX 4000–4999Assigned ONVOY, LLC - OR 750E STFRD-SNDY OR
2012-11-20 503-506-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E STFRD-SNDY OR
2012-11-20 503-594-4XXX 4000–4999Assigned ONVOY, LLC - OR 750E CLACKAMAS OR
2012-11-20 503-610-4XXX 4000–4999Assigned ONVOY, LLC - OR 750E SHERWOOD OR
2012-11-20 503-676-3XXX 3000–3999Assigned ONVOY, LLC - OR 750E GRESHAM OR
2012-11-20 503-676-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E GRESHAM OR
2012-11-20 503-676-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E GRESHAM OR
2012-11-20 503-678-9XXX 9000–9999Assigned ONVOY, LLC - OR 750E AURORA OR
2012-11-20 503-683-8XXX 8000–8999Assigned ONVOY, LLC - OR 750E CLACKAMAS OR
2012-11-20 503-743-0XXX 0000–0999Assigned ONVOY, LLC - OR 750E AUMSVLTRNR OR
2012-11-20 503-743-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E AUMSVLTRNR OR
2012-11-20 503-743-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E AUMSVLTRNR OR
2012-11-20 503-744-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E CLACKAMAS OR
2012-11-20 503-770-4XXX 4000–4999Assigned ONVOY, LLC - OR 750E CHARBONNEU OR
2012-11-20 503-770-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E CHARBONNEU OR
2012-11-20 503-770-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E CHARBONNEU OR
2012-11-20 503-776-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E AURORA OR
2012-11-20 503-837-4XXX 4000–4999Assigned ONVOY, LLC - OR 750E DALLAS OR
2012-11-20 503-837-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E DALLAS OR
2012-11-20 503-837-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E DALLAS OR
2012-11-20 503-854-0XXX 0000–0999Assigned ONVOY, LLC - OR 750E DETROIT OR
2012-11-20 503-854-4XXX 4000–4999Assigned ONVOY, LLC - OR 750E DETROIT OR
2012-11-19 503-543-1XXX 1000–1999Assigned ONVOY, LLC - OR 750E SCAPPOOSE OR
2012-11-19 503-647-8XXX 8000–8999Assigned ONVOY, LLC - OR 750E NORTH PL OR
2012-11-09 503-447-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F NORTH PL OR
2012-11-08 503-985-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2012-11-08 503-985-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2012-10-25 503-509-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 STAYTON OR
2012-10-23 503-683-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CLACKAMAS OR
2012-10-18 503-272-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E GOVENTCAMP OR
2012-10-04 503-783-7XXX 7000–7999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 STFRD-SNDY OR
2012-09-20 503-597-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2012-09-20 503-746-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2012-09-20 503-746-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2012-09-20 503-862-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SHERWOOD OR
2012-09-13 503-836-6XXX 6000–6999Assigned METROPCS, INC. 5562 ASTORIA OR
2012-09-10 503-305-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CLACKAMAS OR
2012-09-07 503-433-8XXX 8000–8999Assigned ONVOY, LLC - OR 750E NORTH PL 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.