NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

8 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 575
T-MOBILE USA, INC. 6
ONVOY, LLC - NM 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 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
2011-05-25 575-318-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 HOBBS NM
2011-05-25 575-616-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ARTESIA NM
2011-05-23 575-263-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HOBBS NM
2011-05-23 575-322-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F SOCORRO NM
2011-05-23 575-578-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ROSWELL NM
2011-05-05 575-323-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2011-04-18 575-513-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARTESIA NM
2011-04-11 575-825-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 PORTALES NM
2011-04-06 575-704-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LOVINGTON NM
2011-03-31 575-754-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RED RIVER NM
2011-03-29 575-914-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ROSWELL NM
2011-03-29 575-914-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ROSWELL NM
2011-03-25 575-520-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAS CRUCES NM
2011-03-25 575-578-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ROSWELL NM
2011-03-25 575-725-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARLSBAD NM
2011-03-25 575-725-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARLSBAD NM
2011-03-24 575-912-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BAYARD NM
2011-03-16 575-725-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CARLSBAD NM
2011-03-11 575-303-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F RATON NM
2011-03-11 575-587-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F PENASCO NM
2011-03-11 575-936-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F DEMING NM
2011-03-11 575-942-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOBBS NM
2011-03-11 575-942-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOBBS NM
2011-03-11 575-942-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOBBS NM
2011-03-08 575-268-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CLOVIS NM
2011-03-08 575-618-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ANTHONY NM
2011-03-08 575-997-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 SNA TERESA NM
2011-03-01 575-495-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2011-03-01 575-499-7XXX 7000–7999Assigned METROPCS, INC. 5562 CARLSBAD NM
2011-02-10 575-303-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F RATON NM
2011-02-10 575-587-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F PENASCO NM
2011-01-26 575-578-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA NM-LLC 450C ROSWELL NM
2011-01-19 575-323-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F LAS CRUCES NM
2011-01-19 575-323-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F LAS CRUCES NM
2011-01-06 575-495-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2011-01-06 575-517-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 SOCORRO NM
2011-01-06 575-652-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2011-01-06 575-654-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 SILVERCITY NM
2010-12-21 575-618-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ANTHONY NM
2010-12-21 575-652-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2010-12-13 575-224-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F TAOS NM
2010-12-13 575-322-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F SOCORRO NM
2010-12-13 575-694-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F DEMING NM
2010-11-26 575-332-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K SNA TERESA NM
2010-11-26 575-444-7XXX 7000–7999Assigned METROPCS, INC. 5562 ROSWELL NM
2010-11-26 575-444-8XXX 8000–8999Assigned METROPCS, INC. 5562 ROSWELL NM
2010-11-26 575-444-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ROSWELL NM
2010-11-24 575-444-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ROSWELL NM
2010-11-19 575-652-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F LAS CRUCES NM
2010-11-19 575-708-7XXX 7000–7999Assigned ONVOY, LLC - NM 206F TUCUMCARI NM

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.