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
2009-01-05 575-914-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ROSWELL NM
2008-12-17 575-520-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAS CRUCES NM
2008-12-03 575-952-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 TRUTHCQNCS NM
2008-11-11 575-725-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F CARLSBAD NM
2008-11-10 575-446-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALAMOGORDO NM
2008-11-07 575-725-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARLSBAD NM
2008-10-28 575-915-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2008-10-22 575-300-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 LA MESA NM
2008-10-21 575-201-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ANTHONY NM
2008-10-21 575-208-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ROSWELL NM
2008-10-21 575-322-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F SOCORRO NM
2008-10-21 575-408-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F HOBBS NM
2008-10-21 575-415-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ALAMOGORDO NM
2008-10-21 575-448-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F CHAPARRAL NM
2008-10-21 575-513-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ARTESIA NM
2008-10-21 575-519-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F SILVERCITY NM
2008-10-21 575-694-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F DEMING NM
2008-10-21 575-737-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F TAOS NM
2008-10-21 575-742-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F CLOVIS NM
2008-10-14 575-812-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALAMOGORDO NM
2008-09-30 575-208-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ROSWELL NM
2008-09-30 575-405-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 LAS CRUCES NM
2008-09-30 575-448-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 CHAPARRAL NM
2008-09-30 575-517-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SOCORRO NM
2008-09-30 575-545-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 DEMING NM
2008-09-25 575-415-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ALAMOGORDO NM
2008-09-23 575-322-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 SOCORRO NM
2008-09-23 575-408-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 HOBBS NM
2008-09-23 575-942-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F HOBBS NM
2008-09-05 575-233-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 LA MESA NM
2008-09-05 575-308-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ARTESIA NM
2008-09-05 575-408-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOBBS NM
2008-09-05 575-408-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOBBS NM
2008-09-05 575-408-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOBBS NM
2008-08-19 575-373-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2008-08-19 575-415-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2008-08-19 575-528-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2008-08-19 575-654-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 SILVERCITY NM
2008-08-19 575-915-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2008-07-31 575-520-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAS CRUCES NM
2008-07-29 575-519-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 SILVERCITY NM
2008-07-21 575-513-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARTESIA NM
2008-07-15 575-914-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ROSWELL NM
2008-06-26 575-386-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAS CRUCES NM
2008-06-26 575-386-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAS CRUCES NM
2008-06-24 575-415-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2008-06-24 575-415-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2008-06-24 575-415-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2008-06-24 575-779-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 TAOS NM
2008-06-24 575-779-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 TAOS 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.