NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 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. 1
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
2016-10-06 575-339-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LAS CRUCES NM
2016-09-20 575-221-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 EUNICE NM
2016-09-20 575-725-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 CARLSBAD NM
2016-09-08 575-494-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DEMING NM
2016-09-06 575-231-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARTESIA NM
2016-08-23 575-214-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2016-08-23 575-214-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2016-08-18 575-339-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2016-07-27 575-489-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ALAMOGORDO NM
2016-07-18 575-363-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROSWELL NM
2016-06-24 575-659-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F LOVINGTON NM
2016-06-22 575-236-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F CARLSBAD NM
2016-06-22 575-366-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F CLOVIS NM
2016-06-20 575-223-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F TRUTHCQNCS NM
2016-05-26 575-366-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLOVIS NM
2016-05-25 575-425-9XXX 9000–9999Assigned METROPCS, INC. 5562 TAOS NM
2016-05-16 575-689-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CARLSBAD NM
2016-05-16 575-942-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HOBBS NM
2016-04-27 575-543-9XXX 9000–9999Assigned METROPCS, INC. 5562 DEMING NM
2016-04-27 575-590-8XXX 8000–8999Assigned METROPCS, INC. 5562 SILVERCITY NM
2016-04-27 575-654-8XXX 8000–8999Assigned METROPCS, INC. 5562 SILVERCITY NM
2016-04-27 575-694-8XXX 8000–8999Assigned METROPCS, INC. 5562 DEMING NM
2016-04-20 575-605-8XXX 8000–8999Assigned METROPCS, INC. 5562 HOBBS NM
2016-04-06 575-339-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F LAS CRUCES NM
2016-04-06 575-339-2XXX 2000–2999Assigned ONVOY, LLC - NM 206F LAS CRUCES NM
2016-04-04 575-205-5XXX 5000–5999Assigned PEERLESS NETWORK OF NEW MEXICO, LLC - NM 377H TUCUMCARI NM
2016-04-04 575-728-8XXX 8000–8999Assigned PEERLESS NETWORK OF NEW MEXICO, LLC - NM 377H HATCH NM
2016-04-01 575-200-2XXX 2000–2999Assigned METROPCS, INC. 5562 CARLSBAD NM
2016-04-01 575-616-8XXX 8000–8999Assigned METROPCS, INC. 5562 ARTESIA NM
2016-03-30 575-339-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LAS CRUCES NM
2016-03-23 575-727-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F BAYARD NM
2016-03-23 575-727-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F BAYARD NM
2016-03-23 575-735-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F CIMARRON NM
2016-03-23 575-735-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F CIMARRON NM
2016-03-21 575-205-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F TUCUMCARI NM
2016-03-21 575-205-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F TUCUMCARI NM
2016-03-21 575-300-3XXX 3000–3999Assigned ONVOY, LLC - NM 206F LA MESA NM
2016-03-21 575-300-4XXX 4000–4999Assigned ONVOY, LLC - NM 206F LA MESA NM
2016-03-18 575-252-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F ANGEL FIRE NM
2016-03-18 575-252-9XXX 9000–9999Assigned ONVOY, LLC - NM 206F ANGEL FIRE NM
2016-03-18 575-440-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F RED RIVER NM
2016-03-18 575-440-2XXX 2000–2999Assigned ONVOY, LLC - NM 206F RED RIVER NM
2016-03-17 575-707-4XXX 4000–4999Assigned PEERLESS NETWORK OF NEW MEXICO, LLC - NM 377H RATON NM
2016-03-15 575-468-2XXX 2000–2999Assigned ONVOY, LLC - NM 206F PORTALES NM
2016-03-15 575-468-4XXX 4000–4999Assigned ONVOY, LLC - NM 206F PORTALES NM
2016-03-14 575-222-3XXX 3000–3999Assigned METROPCS, INC. 5562 LAS CRUCES NM
2016-03-14 575-222-6XXX 6000–6999Assigned METROPCS, INC. 5562 LAS CRUCES NM
2016-03-14 575-366-0XXX 0000–0999Assigned METROPCS, INC. 5562 CLOVIS NM
2016-03-14 575-366-1XXX 1000–1999Assigned METROPCS, INC. 5562 CLOVIS NM
2016-03-11 575-232-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F CHAPARRAL 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.