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
2019-09-13 503-800-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GERVAIS OR
2019-06-14 503-300-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BAY CITY OR
2019-06-14 503-592-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CANBYNEEDY OR
2019-05-06 503-852-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CARLTON OR
2019-04-29 503-714-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F DAYTON OR
2019-04-08 503-732-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVER CRK OR
2019-04-08 503-732-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVER CRK OR
2019-04-04 503-664-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVER OR
2019-03-20 503-586-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2019-02-28 503-979-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 STAYTON OR
2019-02-01 503-898-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDLAND OR
2019-01-14 503-732-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVER CRK OR
2018-12-12 503-979-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 STAYTON OR
2018-11-14 503-461-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E GRANDRONDE OR
2018-11-14 503-782-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E PACIFIC CY OR
2018-11-07 503-300-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E BAY CITY OR
2018-11-07 503-664-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E BEAVER OR
2018-11-07 503-852-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E CARLTON OR
2018-10-10 503-885-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J STFRD-SNDY OR
2018-10-01 503-878-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F STFRD-SNDY OR
2018-09-21 503-878-9XXX 9000–9999Assigned METROPCS, INC. 5562 STFRD-SNDY OR
2018-09-19 503-694-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F CHARBONNEU OR
2018-08-07 503-457-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TILLAMOOK OR
2018-07-20 503-217-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SHERWOOD OR
2018-07-13 503-354-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2018-07-13 503-354-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2018-07-13 503-592-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CANBYNEEDY OR
2018-07-13 503-898-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDLAND OR
2018-05-11 503-714-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F DAYTON OR
2018-04-23 503-732-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVER CRK OR
2018-04-06 503-457-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2018-04-06 503-457-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2018-04-03 503-714-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E DAYTON OR
2018-04-03 503-855-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E STFRD-SNDY OR
2018-03-02 503-898-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDLAND OR
2018-03-01 503-979-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 STAYTON OR
2018-03-01 503-979-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 STAYTON OR
2018-02-22 503-974-3XXX 3000–3999Assigned TELNYX LLC 073H CLACKAMAS OR
2018-02-08 503-732-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BEAVER CRK OR
2018-01-03 503-374-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2018-01-03 503-374-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2018-01-03 503-374-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2017-12-04 503-864-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DAYTON OR
2017-11-21 503-800-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GERVAIS OR
2017-11-08 503-300-3XXX 3000–3999Assigned ASTOUND BROADBAND, LLC - OR 936F BAY CITY OR
2017-11-08 503-483-3XXX 3000–3999Assigned ASTOUND BROADBAND, LLC - OR 936F PACIFIC CY OR
2017-11-08 503-664-8XXX 8000–8999Assigned ASTOUND BROADBAND, LLC - OR 936F BEAVER OR
2017-11-07 503-457-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 TILLAMOOK OR
2017-10-06 503-755-1XXX 1000–1999Assigned ONVOY, LLC - OR 750E JEWELL OR
2017-10-06 503-854-9XXX 9000–9999Assigned ONVOY, LLC - OR 750E DETROIT 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.