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
2013-09-13 575-567-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DEMING NM
2013-08-19 575-291-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F ROSWELL NM
2013-08-19 575-300-7XXX 7000–7999Assigned ONVOY, LLC - NM 206F LA MESA NM
2013-08-19 575-343-9XXX 9000–9999Assigned ONVOY, LLC - NM 206F HATCH NM
2013-08-19 575-404-7XXX 7000–7999Assigned ONVOY, LLC - NM 206F ALAMOGORDO NM
2013-08-19 575-587-9XXX 9000–9999Assigned ONVOY, LLC - NM 206F PENASCO NM
2013-08-19 575-619-7XXX 7000–7999Assigned ONVOY, LLC - NM 206F SNA TERESA NM
2013-08-19 575-810-7XXX 7000–7999Assigned ONVOY, LLC - NM 206F ARTESIA NM
2013-08-15 575-449-7XXX 7000–7999Assigned ONVOY, LLC - NM 206F LAS CRUCES NM
2013-08-15 575-449-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F LAS CRUCES NM
2013-07-08 575-686-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CAPITAN NM
2013-06-11 575-904-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA NM-LLC 450C CANNON AFB NM
2013-06-04 575-263-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 HOBBS NM
2013-06-04 575-689-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 CARLSBAD NM
2013-05-23 575-343-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 HATCH NM
2013-05-13 575-265-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLOVIS NM
2013-04-25 575-263-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 HOBBS NM
2013-04-25 575-263-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 HOBBS NM
2013-04-25 575-689-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 CARLSBAD NM
2013-04-08 575-404-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2013-04-01 575-201-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ANTHONY NM
2013-03-27 575-449-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 LAS CRUCES NM
2013-03-25 575-636-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2013-02-11 575-468-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NM 7464 PORTALES NM
2013-01-28 575-291-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ROSWELL NM
2013-01-28 575-291-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ROSWELL NM
2013-01-23 575-291-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ROSWELL NM
2012-12-14 575-342-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA NM-LLC 450C SILVERCITY NM
2012-12-14 575-383-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA NM-LLC 450C RATON NM
2012-12-14 575-518-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA NM-LLC 450C SOCORRO NM
2012-11-21 575-252-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F ANGEL FIRE NM
2012-11-21 575-291-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F ROSWELL NM
2012-11-21 575-291-3XXX 3000–3999Assigned ONVOY, LLC - NM 206F ROSWELL NM
2012-11-21 575-303-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F RATON NM
2012-11-21 575-303-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F RATON NM
2012-11-21 575-342-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F SILVERCITY NM
2012-11-21 575-448-3XXX 3000–3999Assigned ONVOY, LLC - NM 206F CHAPARRAL NM
2012-11-21 575-567-2XXX 2000–2999Assigned ONVOY, LLC - NM 206F DEMING NM
2012-11-21 575-618-3XXX 3000–3999Assigned ONVOY, LLC - NM 206F ANTHONY NM
2012-11-20 575-342-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 SILVERCITY NM
2012-11-16 575-300-1XXX 1000–1999Assigned ONVOY, LLC - NM 206F LA MESA NM
2012-11-16 575-322-9XXX 9000–9999Assigned ONVOY, LLC - NM 206F SOCORRO NM
2012-11-16 575-332-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F SNA TERESA NM
2012-11-16 575-332-2XXX 2000–2999Assigned ONVOY, LLC - NM 206F SNA TERESA NM
2012-11-16 575-332-3XXX 3000–3999Assigned ONVOY, LLC - NM 206F SNA TERESA NM
2012-11-16 575-332-5XXX 5000–5999Assigned ONVOY, LLC - NM 206F SNA TERESA NM
2012-11-16 575-343-3XXX 3000–3999Assigned ONVOY, LLC - NM 206F HATCH NM
2012-11-16 575-446-0XXX 0000–0999Assigned ONVOY, LLC - NM 206F ALAMOGORDO NM
2012-11-16 575-551-9XXX 9000–9999Assigned ONVOY, LLC - NM 206F ALAMOGORDO NM
2012-11-16 575-587-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F PENASCO 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.