NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

8 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 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
2004-11-15 575-373-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LAS CRUCES NM
2004-11-12 575-201-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ANTHONY NM
2004-10-20 575-308-8XXX 8000–8999Assigned METROPCS, INC. 5562 ARTESIA NM
2004-10-18 575-233-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 LA MESA NM
2004-10-18 575-267-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 HATCH NM
2004-10-18 575-308-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ARTESIA NM
2004-10-18 575-824-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 CHAPARRAL NM
2004-10-13 575-635-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2004-10-06 575-590-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SILVERCITY NM
2004-10-05 575-318-8XXX 8000–8999Assigned METROPCS, INC. 5562 HOBBS NM
2004-09-24 575-317-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ROSWELL NM
2004-09-24 575-704-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LOVINGTON NM
2004-09-08 575-791-0XXX 0000–0999Assigned METROPCS, INC. 5562 CLOVIS NM
2004-09-08 575-791-1XXX 1000–1999Assigned METROPCS, INC. 5562 CLOVIS NM
2004-08-25 575-635-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2004-06-29 575-418-9XXX 9000–9999Assigned METROPCS, INC. 5562 SOCORRO NM
2004-05-28 575-937-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 RUIDOSO NM
2004-05-05 575-418-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SOCORRO NM
2004-05-05 575-442-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2004-05-04 575-318-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 HOBBS NM
2004-03-30 575-693-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CLOVIS NM
2004-03-15 575-442-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2004-03-11 575-317-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ROSWELL NM
2004-03-08 575-418-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 SOCORRO NM
2004-02-26 575-613-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TAOS NM
2004-02-24 575-302-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CARLSBAD NM
2004-02-17 575-693-2XXX 2000–2999Assigned METROPCS, INC. 5562 CLOVIS NM
2004-01-26 575-543-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DEMING NM
2003-12-23 575-693-7XXX 7000–7999Assigned METROPCS, INC. 5562 CLOVIS NM
2003-11-26 575-545-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DEMING NM
2003-11-21 575-313-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F SILVERCITY NM
2003-11-04 575-317-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ROSWELL NM
2003-10-28 575-590-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SILVERCITY NM
2003-10-17 575-494-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DEMING NM
2003-10-14 575-590-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SILVERCITY NM
2003-10-13 575-302-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CARLSBAD NM
2003-10-09 575-937-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 RUIDOSO NM
2003-09-29 575-590-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SILVERCITY NM
2003-09-17 575-317-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ROSWELL NM
2003-09-10 575-635-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2003-09-10 575-635-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2003-09-10 575-635-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2003-09-10 575-635-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2003-06-24 575-815-9XXX 9000–9999Assigned METROPCS, INC. 5562 TUCUMCARI NM
2003-06-05 575-418-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SOCORRO NM
2003-06-05 575-693-8XXX 8000–8999Assigned METROPCS, INC. 5562 CLOVIS NM
2003-06-02 575-937-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 RUIDOSO NM
2003-06-02 575-937-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 RUIDOSO NM
2003-06-02 575-937-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 RUIDOSO NM
2003-06-02 575-937-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 RUIDOSO NM

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.