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
2014-10-27 575-288-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAS CRUCES NM
2014-10-27 575-288-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NM 7464 LAS CRUCES NM
2014-10-24 575-303-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F RATON NM
2014-10-22 575-489-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2014-10-22 575-489-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2014-10-16 575-840-0XXX 0000–0999Assigned METROPCS, INC. 5562 ROSWELL NM
2014-10-16 575-840-1XXX 1000–1999Assigned METROPCS, INC. 5562 ROSWELL NM
2014-10-16 575-914-4XXX 4000–4999Assigned METROPCS, INC. 5562 ROSWELL NM
2014-10-14 575-228-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ALTO NM
2014-10-09 575-305-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F SNA TERESA NM
2014-10-07 575-489-9XXX 9000–9999Assigned METROPCS, INC. 5562 ALAMOGORDO NM
2014-10-02 575-964-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F HOBBS NM
2014-09-30 575-415-2XXX 2000–2999Assigned METROPCS, INC. 5562 ALAMOGORDO NM
2014-09-17 575-200-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F CARLSBAD NM
2014-09-17 575-288-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 LAS CRUCES NM
2014-09-17 575-297-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F TRUTHCQNCS NM
2014-09-17 575-315-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F RUIDOSO NM
2014-09-17 575-378-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F RUIDOSODWN NM
2014-09-17 575-394-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F EUNICE NM
2014-09-17 575-395-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F JAL NM
2014-09-17 575-414-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F LOVING NM
2014-09-17 575-686-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F CAPITAN NM
2014-08-04 575-810-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARTESIA NM
2014-07-18 575-449-0XXX 0000–0999Assigned METROPCS, INC. 5562 LAS CRUCES NM
2014-07-18 575-449-6XXX 6000–6999Assigned METROPCS, INC. 5562 LAS CRUCES NM
2014-07-18 575-449-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LAS CRUCES NM
2014-07-15 575-297-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TRUTHCQNCS NM
2014-07-14 575-404-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2014-07-14 575-404-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2014-07-14 575-495-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2014-06-26 575-263-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 HOBBS NM
2014-06-26 575-263-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 HOBBS NM
2014-06-26 575-263-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 HOBBS NM
2014-06-25 575-602-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 HOBBS NM
2014-06-17 575-404-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2014-06-17 575-404-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2014-06-06 575-425-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F TAOS NM
2014-05-19 575-265-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F CLOVIS NM
2014-05-19 575-303-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F RATON NM
2014-05-19 575-342-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F SILVERCITY NM
2014-05-19 575-347-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ROSWELL NM
2014-05-19 575-418-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F SOCORRO NM
2014-05-19 575-468-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F PORTALES NM
2014-05-19 575-616-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ARTESIA NM
2014-05-19 575-914-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ROSWELL NM
2014-04-28 575-704-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LOVINGTON NM
2014-03-26 575-449-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 LAS CRUCES NM
2014-03-10 575-252-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ANGEL FIRE NM
2014-02-13 575-404-2XXX 2000–2999Assigned VONAGE AMERICA LLC 197D ALAMOGORDO NM
2014-02-06 575-329-3XXX 3000–3999Assigned CEBRIDGE TELECOM NM, LLC DBA SUDDENLINK COMM NM 243H CANNON AFB 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.