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
2014-01-23 575-964-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 HOBBS NM
2014-01-23 575-964-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 HOBBS NM
2014-01-23 575-964-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 HOBBS NM
2014-01-22 575-495-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2013-12-18 575-265-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 CLOVIS NM
2013-12-11 575-265-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 CLOVIS NM
2013-12-06 575-263-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HOBBS NM
2013-12-03 575-737-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F TAOS NM
2013-12-03 575-815-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F TUCUMCARI NM
2013-12-03 575-815-2XXX 2000–2999Assigned ONVOY, LLC - NM 206F TUCUMCARI NM
2013-11-26 575-383-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NM 7464 RATON NM
2013-11-25 575-252-2XXX 2000–2999Assigned ONVOY, LLC - NM 206F ANGEL FIRE NM
2013-11-25 575-252-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F ANGEL FIRE NM
2013-11-25 575-265-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F CLOVIS NM
2013-11-25 575-265-7XXX 7000–7999Assigned ONVOY, LLC - NM 206F CLOVIS NM
2013-11-25 575-342-3XXX 3000–3999Assigned ONVOY, LLC - NM 206F SILVERCITY NM
2013-11-25 575-342-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F SILVERCITY NM
2013-11-25 575-376-3XXX 3000–3999Assigned ONVOY, LLC - NM 206F CIMARRON NM
2013-11-25 575-376-6XXX 6000–6999Assigned ONVOY, LLC - NM 206F CIMARRON NM
2013-11-25 575-383-3XXX 3000–3999Assigned ONVOY, LLC - NM 206F RATON NM
2013-11-25 575-383-7XXX 7000–7999Assigned ONVOY, LLC - NM 206F RATON NM
2013-11-25 575-448-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F CHAPARRAL NM
2013-11-25 575-448-9XXX 9000–9999Assigned ONVOY, LLC - NM 206F CHAPARRAL NM
2013-11-25 575-468-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F PORTALES NM
2013-11-25 575-468-9XXX 9000–9999Assigned ONVOY, LLC - NM 206F PORTALES NM
2013-11-25 575-483-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F SPRINGER NM
2013-11-25 575-483-9XXX 9000–9999Assigned ONVOY, LLC - NM 206F SPRINGER NM
2013-11-25 575-517-3XXX 3000–3999Assigned ONVOY, LLC - NM 206F SOCORRO NM
2013-11-25 575-517-4XXX 4000–4999Assigned ONVOY, LLC - NM 206F SOCORRO NM
2013-11-25 575-567-4XXX 4000–4999Assigned ONVOY, LLC - NM 206F DEMING NM
2013-11-25 575-567-7XXX 7000–7999Assigned ONVOY, LLC - NM 206F DEMING NM
2013-11-25 575-586-3XXX 3000–3999Assigned ONVOY, LLC - NM 206F QUESTA NM
2013-11-25 575-618-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F ANTHONY NM
2013-11-25 575-754-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F RED RIVER NM
2013-11-25 575-912-2XXX 2000–2999Assigned ONVOY, LLC - NM 206F BAYARD NM
2013-11-25 575-912-6XXX 6000–6999Assigned ONVOY, LLC - NM 206F BAYARD NM
2013-11-20 575-686-1XXX 1000–1999Assigned VALOR TELECOM TX,LP-NM #2 DBA WINDSTREAM COMM SW 1193 CAPITAN NM
2013-11-14 575-404-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ALAMOGORDO NM
2013-11-05 575-366-4XXX 4000–4999Assigned CEBRIDGE TELECOM NM, LLC DBA SUDDENLINK COMM NM 243H CLOVIS NM
2013-11-05 575-366-5XXX 5000–5999Assigned CEBRIDGE TELECOM NM, LLC DBA SUDDENLINK COMM NM 243H CLOVIS NM
2013-10-29 575-265-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLOVIS NM
2013-10-18 575-300-9XXX 9000–9999Assigned METROPCS, INC. 5562 LA MESA NM
2013-10-18 575-332-8XXX 8000–8999Assigned METROPCS, INC. 5562 SNA TERESA NM
2013-10-18 575-449-1XXX 1000–1999Assigned METROPCS, INC. 5562 LAS CRUCES NM
2013-10-18 575-520-7XXX 7000–7999Assigned METROPCS, INC. 5562 LAS CRUCES NM
2013-10-16 575-449-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2013-10-15 575-449-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J LAS CRUCES NM
2013-10-14 575-291-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ROSWELL NM
2013-09-27 575-618-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ANTHONY NM
2013-09-13 575-404-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO 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.