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
2022-01-08 575-270-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LAS CRUCES NM
2022-01-08 575-270-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LAS CRUCES NM
2022-01-08 575-270-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LAS CRUCES NM
2022-01-04 575-285-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2022-01-04 575-285-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2022-01-04 575-285-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2022-01-04 575-285-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2022-01-04 575-285-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2022-01-04 575-285-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2022-01-04 575-285-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2022-01-04 575-285-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2022-01-04 575-550-9XXX 9000–9999Assigned PEERLESS NETWORK OF NEW MEXICO, LLC - NM 377H ROSWELL NM
2021-12-29 575-756-3XXX 3000–3999Assigned ONVOY, LLC - NM 206F CHAMA NM
2021-12-17 575-270-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J LAS CRUCES NM
2021-12-15 575-277-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2021-12-15 575-277-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2021-12-15 575-277-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2021-12-15 575-277-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 LAS CRUCES NM
2021-12-08 575-271-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CLOVIS NM
2021-12-08 575-271-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLOVIS NM
2021-12-07 575-243-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ARTESIA NM
2021-12-07 575-284-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F SILVERCITY NM
2021-12-03 575-240-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TAOS NM
2021-11-22 575-283-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ANTHONY NM
2021-11-19 575-209-8XXX 8000–8999Assigned ONVOY, LLC - NM 206F CHAMA NM
2021-11-17 575-280-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F QUESTA NM
2021-11-16 575-573-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CRLSBACRNS NM
2021-11-15 575-247-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F ARTESIA NM
2021-11-15 575-284-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NM 123F SILVERCITY NM
2021-11-10 575-786-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RODEO NM
2021-11-10 575-842-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MAGDALENA NM
2021-11-03 575-733-9XXX 9000–9999Assigned PEERLESS NETWORK OF NEW MEXICO, LLC - NM 377H RATON NM
2021-10-26 575-247-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H ARTESIA NM
2021-10-26 575-247-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H ARTESIA NM
2021-10-26 575-285-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2021-10-26 575-285-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALAMOGORDO NM
2021-10-21 575-228-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H ALTO NM
2021-10-21 575-228-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H ALTO NM
2021-10-21 575-345-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H CANNON AFB NM
2021-10-21 575-345-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CANNON AFB NM
2021-10-21 575-570-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H CANJILON NM
2021-10-18 575-945-9XXX 9000–9999Assigned METROPCS, INC. 5562 LOGAN NM
2021-10-13 575-808-6XXX 6000–6999Assigned METROPCS, INC. 5562 RUIDOSO NM
2021-10-11 575-215-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ANTHONY NM
2021-09-29 575-277-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K LAS CRUCES NM
2021-09-29 575-338-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K LA MESA NM
2021-09-24 575-240-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TAOS NM
2021-09-17 575-837-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2021-09-17 575-837-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALAMOGORDO NM
2021-09-13 575-292-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NM 5470 TIERRAAMRL 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.