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
2021-04-20 575-945-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LOGAN NM
2021-04-15 575-237-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F CARLSBAD NM
2021-04-15 575-237-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F CARLSBAD NM
2021-04-15 575-237-3XXX 3000–3999Assigned ONVOY, LLC - NM 206F CARLSBAD NM
2021-04-15 575-237-9XXX 9000–9999Assigned ONVOY, LLC - NM 206F CARLSBAD NM
2021-04-15 575-333-4XXX 4000–4999Assigned ONVOY, LLC - NM 206F LOVINGTON NM
2021-04-15 575-333-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F LOVINGTON NM
2021-04-15 575-454-6XXX 6000–6999Assigned ONVOY, LLC - NM 206F RUIDOSO NM
2021-04-15 575-454-7XXX 7000–7999Assigned ONVOY, LLC - NM 206F RUIDOSO NM
2021-04-15 575-665-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F HOBBS NM
2021-04-15 575-900-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F VALLECITOS NM
2021-04-12 575-554-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2021-04-12 575-554-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2021-04-07 575-837-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J ALAMOGORDO NM
2021-04-05 575-249-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LAS CRUCES NM
2021-04-05 575-249-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LAS CRUCES NM
2021-03-26 575-554-0XXX 0000–0999Assigned TELNYX LLC 073H ALAMOGORDO NM
2021-03-25 575-334-3XXX 3000–3999Assigned ONVOY, LLC - NM 206F CHAPARRAL NM
2021-03-25 575-334-4XXX 4000–4999Assigned ONVOY, LLC - NM 206F CHAPARRAL NM
2021-03-23 575-333-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LOVINGTON NM
2021-03-23 575-550-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ROSWELL NM
2021-03-09 575-247-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ARTESIA NM
2021-03-09 575-247-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ARTESIA NM
2021-03-05 575-619-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SNA TERESA NM
2021-02-17 575-246-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ROSWELL NM
2021-02-17 575-246-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ROSWELL NM
2021-02-17 575-246-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ROSWELL NM
2021-02-17 575-246-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ROSWELL NM
2021-02-17 575-246-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ROSWELL NM
2021-02-17 575-246-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ROSWELL NM
2021-02-17 575-246-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ROSWELL NM
2021-02-17 575-246-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ROSWELL NM
2021-02-12 575-429-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 CLAYTON NM
2021-02-12 575-781-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SANTA ROSA NM
2021-02-12 575-945-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 LOGAN NM
2021-02-09 575-554-4XXX 4000–4999Assigned ONVOY, LLC - NM 206F ALAMOGORDO NM
2021-02-09 575-554-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F ALAMOGORDO NM
2021-02-09 575-554-6XXX 6000–6999Assigned ONVOY, LLC - NM 206F ALAMOGORDO NM
2021-02-09 575-554-7XXX 7000–7999Assigned ONVOY, LLC - NM 206F ALAMOGORDO NM
2021-02-09 575-665-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F HOBBS NM
2021-02-09 575-665-6XXX 6000–6999Assigned ONVOY, LLC - NM 206F HOBBS NM
2021-02-09 575-665-7XXX 7000–7999Assigned ONVOY, LLC - NM 206F HOBBS NM
2021-02-05 575-231-7XXX 7000–7999Assigned ONVOY, LLC - NM 206F ARTESIA NM
2021-02-05 575-251-6XXX 6000–6999Assigned ONVOY, LLC - NM 206F JAL NM
2021-02-05 575-251-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F JAL NM
2021-02-05 575-256-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F TIERRAAMRL NM
2021-02-05 575-256-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F TIERRAAMRL NM
2021-02-05 575-385-2XXX 2000–2999Assigned ONVOY, LLC - NM 206F CUBA NM
2021-02-05 575-385-3XXX 3000–3999Assigned ONVOY, LLC - NM 206F CUBA NM
2021-02-05 575-400-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F LINDRITH 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.