NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 541
ONVOY, LLC - OR 2
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
2014-01-28 541-816-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 MEDFORD OR
2014-01-24 541-275-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J UMATILLA OR
2014-01-24 541-320-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SUMPTER OR
2014-01-24 541-562-0XXX 0000–0999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J UNION OR
2014-01-24 541-886-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WALLOWA OR
2014-01-24 541-904-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SISTERS OR
2014-01-22 541-303-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HERMISTON OR
2014-01-22 541-534-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J IMBLER OR
2014-01-22 541-568-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J COVE OR
2014-01-22 541-569-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LOSTINE OR
2014-01-22 541-577-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 JOSEPH OR
2014-01-22 541-605-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LA GRANDE OR
2014-01-22 541-638-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BLACKBUTTE OR
2014-01-22 541-803-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CULVER OR
2014-01-22 541-903-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PRINEVILLE OR
2014-01-22 541-907-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LAPINE OR
2014-01-22 541-960-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ELGIN OR
2014-01-21 541-777-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MADRAS OR
2014-01-03 541-539-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KLAMATHFLS OR
2014-01-03 541-982-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COOS BAY OR
2013-12-26 541-920-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OR 7442 VALE OR
2013-12-13 541-615-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MADRAS OR
2013-12-13 541-813-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BROOKINGS OR
2013-12-10 541-399-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HOOD RIVER OR
2013-12-10 541-965-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 THE DALLES OR
2013-12-06 541-559-8XXX 8000–8999Assigned ONVOY, LLC - OR 750E MYRTLE PT OR
2013-12-06 541-559-9XXX 9000–9999Assigned ONVOY, LLC - OR 750E MYRTLE PT OR
2013-12-06 541-590-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FLORENCE OR
2013-12-06 541-649-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 COTTAGEGRV OR
2013-12-06 541-824-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 COQUILLE OR
2013-12-06 541-936-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALBANY OR
2013-12-06 541-952-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 JUNCTIONCY OR
2013-12-05 541-203-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E STATELINE OR
2013-12-05 541-203-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E STATELINE OR
2013-12-05 541-635-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E TOLEDO OR
2013-12-05 541-635-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E TOLEDO OR
2013-12-05 541-648-2XXX 2000–2999Assigned ONVOY, LLC - OR 750E SILETZ OR
2013-12-05 541-648-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E SILETZ OR
2013-12-05 541-725-0XXX 0000–0999Assigned ONVOY, LLC - OR 750E MAPLETON OR
2013-12-05 541-725-8XXX 8000–8999Assigned ONVOY, LLC - OR 750E MAPLETON OR
2013-12-05 541-802-5XXX 5000–5999Assigned ONVOY, LLC - OR 750E OAKLAND OR
2013-12-05 541-802-7XXX 7000–7999Assigned ONVOY, LLC - OR 750E OAKLAND OR
2013-12-05 541-896-6XXX 6000–6999Assigned ONVOY, LLC - OR 750E LEABURG OR
2013-12-05 541-904-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SISTERS OR
2013-12-05 541-907-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LAPINE OR
2013-11-27 541-903-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PRINEVILLE OR
2013-11-25 541-288-9XXX 9000–9999Assigned PEERLESS NETWORK OF OREGON, LLC - OR 157F THE DALLES OR
2013-11-25 541-399-8XXX 8000–8999Assigned PEERLESS NETWORK OF OREGON, LLC - OR 157F HOOD RIVER OR
2013-11-20 541-403-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BAKER OR
2013-11-20 541-656-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HERMISTON 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.